Program: 21st Symposium on Boundary Layers and Turbulence (21st Symposium on Boundary Layers and Turbulence)

Registration Begins

Location: Ballroom Foyer (Queens Hotel)

Registration continues through Friday

Location: Ballroom Foyer (Queens Hotel)

Session 1A

Observations and Modeling in Complex Terrain - 1

Location: Queens Ballroom (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: Eric Pardyjak, Univ. of Utah

8:45 AM

Welcoming Remarks

9:00 AM

1A.1

Common Transient Drainage flows and Cold Pools

Larry Mahrt, NorthWest Research Associates, Inc., Corvallis, OR

9:15 AM

1A.2

High Resolution Simulations of Cold Air Pooling in the UK Landscape: Results from the COLPEX Campaign

John Hughes, University of Leeds, Leeds, West Yorkshire, United Kingdom; and A. N. Ross, S. Vosper, and A. Lock

9:30 AM

1A.3

The sensitivity of cold air pool evoloution in hilly terrain regions

Bradley Colin Jemmett-Smith, University of Leeds, Leeds, United Kingdom; and A. N. Ross

Handout (1.3 MB)

9:45 AM

1A.4

Foehn jets over the Larsen C Ice Shelf, Antarctica

Andrew D. Elvidge, University of East Anglia, Norwich, United Kingdom; and I. A. Renfrew, J. C. King, A. Orr, T. Lachlan-Cope, M. Weeks, and S. L. Gray

Session 1B

Air-Sea Interaction

Location: John Charles Suite (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: Ian M. Brooks, University of Leeds

8:45 AM

Welcoming Remarks

1B.1

The marine atmospheric boundary layer during neutral stratification

9:15 AM

1B.2

Heat flux in the presence of sea surface swell

Anna Rutgersson, Uppsala Univ., Uppsala, Sweden; and E. Nilsson

9:30 AM

1B.3

Laboratory modeling of aerodynamic roughness of water surface under severe wind conditions

Yuliya Troitskaya, Institute of Applied Physics RAS, Nizhny Novgorod, Russia; and D. Sergeev, A. Kandaurov, G. Baidakov, M. Vdovin, and V. Kazakov

9:45 AM

1B.4

Eddy Covariance measurements of the sea-spray aerosol flux: parameterization in terms of a wave roughness Reynolds number

Sarah J. Norris, University of Leeds, Leeds, United Kingdom; and I. M. Brooks and D. J. Salisbury

Coffee Break

Location: Ark Royal (Queens Hotel)

Session 2A

Observations and Modeling in Complex Terrain - 2

Location: Queens Ballroom (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: Andrew N. Ross, University of Leeds

10:30 AM

2A.1

i-Box: Studying boundary layers in very complex terrain

Ivana Stiperski, University of Innsbruck, Innsbruck, Austria; and M. W. Rotach

10:45 AM

2A.2

Comparative assessment of methods to retrieve fine-scale atmospheric boundary layer structures from airborne measurements

Lavinia Laiti, University of Trento, Trento, Italy; and D. Zardi, M. de Franceschi, and G. Rampanelli

Handout (3.2 MB)

11:00 AM

2A.3

Linking near surface turbulence under stable conditions to regional flow stability, and geometric and surface cover properties of the landscape

Luiz E. Medeiros, Universidade Federal de Santa Maria - UFSM, Santa Maria, Rio Grande do Su, Brazil; and D. R. Fitzjarrald

Manuscript (488.3 kB)

Handout (9.7 MB)

11:15 AM

2A.4

Challenges Associated with Adapting the Governing Flow Equations for Coordinate Systems Aligned with Steep Slopes

Holly J. Oldroyd, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland; and E. R. Pardyjak, H. Huwald, and M. B. Parlange

Handout (18.6 MB)

11:30 AM

2A.5 has moved. New Paper number is 14B.1A.

11:45 AM

2A.6

On Bora wind driven near surface turbulence over complex terrain

Branko Grisogono, Department of Geophysics, Faculty of Science, University of Zagreb, Croatia, Zagreb, Croatia; and N. Babic, K. Horvath, and Z. Vecenaj

Session 2B

Air-Sea Interaction, Coastal and Marine Boundary Layers - 1

Location: John Charles Suite (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

10:30 AM

2B.1

Spray-mediated sensible heat flux in shear-driven turbulence

David H. Richter, University of Notre Dame, Notre Dame, IN; and P. P. Sullivan

10:45 AM

2B.2

Using a High Frequency Fluorescent Oxygen Probe in Atmospheric Eddy Covariance Applications

Andreas Andersson, Uppsala University, Uppsala, Sweden; and A. Rutgersson and E. Sahlée

11:00 AM

2B.3

An Improved Bulk Air-Sea Surface Flux Algorithm, Including Spray-Mediated Transfer

Edgar L. Andreas, NorthWest Research Associates, Inc., Lebanon, NH; and L. Mahrt and D. Vickers

Manuscript (1.1 MB)

11:15 AM

2B.4

Atmospheric Turbulence and Wave Measurements with a Small Spar Buoy

John Kalogiros, National Observatory of Athens, Athens, Greece; and Q. Wang, R. J. Lind, C. Zuniga, R. C. Cherrett, and K. Hermsdorfer

11:30 AM

2B.5

Stable Boundary Layer in Tropical Cyclones: Observations and Coupled Modeling of Its Impact on Storm Structure

Shuyi S. Chen, Univ. of Miami/RSMAS, Miami, FL; and C. Y. Lee

11:45 AM

2B.6

David James Tupman, Eberhard Karls Universität Tübingen, Tübingen, Germany; and I. M. Brooks, M. J. Yelland, R. W. Pascal, J. Prytherch, B. I. Moat, and S. J. Norris

Lunch Break

Location: Palm Court/Queens Grill (Queens Hotel)

Session 3A

Observations and Modelling Complex Terrain - 3 / Urban Boundary Layers - 1

Location: Queens Ballroom (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: Alison Tomlin, University of Leeds, Leeds LS2 9JT, UK

1:30 PM

3A.1

An analytic solution for periodic thermally driven flows over an infinite slope: Defant (1949) revisited

Dino Zardi, University of Trento, Trento, Italy; and S. Serafin

1:45 PM

3A.2

Introduction of a Field Experiment over the Complex Terrain in the Southeast Himalayas, Tibetan Plateau

Libo Zhou Sr., Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; and S. Ma and H. Zou

2:00 PM

3A.3

Validation of Large-Eddy Simulations of Flows Over Complex Terrain with the Weather Research and Forecasting Model

B. Kosovic, NCAR, Boulder, CO; and J. D. Mirocha and K. A. Lundquist

2:15 PM

3A.4

Improving the immersed boundary method in WRF for complex mountainous terrain

Jingyi Bao, University of California, Berkeley, Berkeley, CA; and K. A. Lundquist and F. K. Chow

2:30 PM

3A.5

Numerical study of turbulence temporal characteristics in the urban sublayer

William Anderson, University of Texas at Dallas, Richardson, TX; and Q. Li and E. Bou-Zeid

2:45 PM

3A.6

Large-eddy simulation of atmospheric boundary layer flows over surface transitions from flat to idealized urban terrains

Wai-Chi Cheng, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland; and F. Porté-Agel

Session 3B

Air-Sea Interaction, Coastal and Marine Boundary Layers - 2

Location: John Charles Suite (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: Anna Rutgersson, Uppsala Univ.

1:30 PM

3B.1

Aircraft-based observations of air-sea turbulent fluxes around the British Isles

Peter Anthony Cook, University of East Anglia, Norwich, Norfolk, United Kingdom; and I. A. Renfrew

1:45 PM

3B.2

Marine Boundary Layer and Turbulent Fluxes over Aegean Sea during an Etesian outbreak

Maria Tombrou, National and Kapodistrian University of Athens, Athens, Greece; and J. Kalogiros, G. Papangelis, A. Dandou, E. Bossioli, G. Biskos, N. Mihalopoulos, J. Allan, and H. Coe

2:00 PM

3B.3

Evolution of a sea-breeze day through the analysis of the momentum, temperature and turbulence budgets

Joan Cuxart, Universitat de les Illes Balears, Palma de Mallorca, Balearic Islands, Spain; and M. A. Jimenez, M. Telisman-Prtenjak, and B. Grisogono

2:15 PM

3B.4

Sensitivity of lake‒atmosphere interaction on water clarity

Annika Nordbo, University of Helsinki, Helsinki, Finland; and I. Mammarella, A. Ojala, K. M. Erkkilä, M. Leppäranta, H. Järvinen, and T. Vesala

2:30 PM

3B.5

Impact of mesoscale meteorological processes on the anomalous propagation conditions over the Adriatic area

Maja Telišman Prtenjak, University of Zagreb, Zagreb, Croatia; and I. Horvat, I. Tomažić, M. Kvakić, M. Viher, and B. Grisogono

2:45 PM

3B.6

Turbulence Structure of Atmospheric Surface Layer in Qatar

Babak Gheynani, UCAR, Doha, Qatar; and R. Sadr

Coffee Break

Location: Ark Royal (Queens Hotel)

Session 4A

Observations and Modelling in Urban Boundary Layers - 2

Location: Queens Ballroom (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: Ian Harman, CSIRO

3:30 PM

4A.1

Predictability of turbulent flow in street canyons

Keith Ngan, City University of Hong Kong, Kowloon, Hong Kong; and K. W. Lo

3:45 PM

4A.2

Observations of urban boundary layer structure during a strong urban heat island event

Janet F. Barlow, University of Reading, Reading, United Kingdom; and C. Halios, S. E. Lane, and C. R. Wood

4:00 PM

4A.3

Estimating aerodynamic parameters over complex urban surfaces: a case study for London

Alison S. Tomlin, University of Leeds, Leeds, United Kingdom; and J. Millward-Hopkins

4:15 PM

4A.4

The ClearfLo project – The influence of London's urban boundary layer structure on air pollution concentrations

Sylvia I. Bohnenstengel, Met Office, Reading, Berks., United Kingdom; and S. E. Belcher, J. F. Barlow, O. Coceal, C. Halios, J. Lee, L. Williams, and C. Helfter

4:30 PM

4A.5

Comparison of Two LIDAR Types During the ClearfLo Project in London

Simone Kotthaus, University of Reading, Reading, United Kingdom; and C. Halios, C. S. B. Grimmond, J. F. Barlow, and E. J. O'Connor

4:45 PM

4A.6

Turbulence measurements over a suburban landscape using scintillometry and eddy covariance

Helen C. Ward, Centre for Ecology and Hydrology, UK, Wallingford, United Kingdom; and J. G. Evans and S. Grimmond

5:00 PM

4A.7

Large aperture scintillometry observations in central London during ClearfLo

C. Sue B. Grimmond, University of Reading, Reading, United Kingdom; and W. T. J. Morrison, J. Mustchin, S. Kotthaus, L. Pauscher, and H. C. Ward

5:15 PM

4A.8

In-situ and remotely sensed shallow atmospheric boundary layers over Helsinki city

Curtis R. Wood, Finnish Meteorological Institute, Helsinki, Finland; and R. Kouznetsov, A. Nordbo, A. Hirsikko, L. Järvi, E. J. O'Connor, S. Joffre, V. Vakkari, A. Karppinen, A. Hellsten, and J. Kukkonen

Session 4B

Boundary Layer Processes - Coupling to the Surface and Free Troposphere

Location: John Charles Suite (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: Joseph B. Olson, NOAA/CIRES

3:30 PM

4B.1

Boundary layer processes over different surfaces simulated by WRF in a mountainous region south of Vienna, Austria

Irene Schicker, University of Natural Resources and Life Sciences, Vienna, Austria; and D. Arnold

Manuscript (2.7 MB)

4B.2

POD of turbulent flow above surface with different roughness classes

3:45 PM

4B.3

Efforts towards a more complex and realistic representation of the exchanges between the surface and the atmospheric boundary layer in Canada's prediction systems

Stephane Belair, EC, Dorval, QC, Canada; and S. L. Leroyer, S. Z. Husain, N. Bernier, M. Abrahamowicz, and A. Zadra

4:00 PM

4B.4

Effects of land-surface heterogeneity on turbulent transport of momentum and heat: wind-tunnel studies

Wei Zhang, Cleveland State University, Cleveland, OH; and C. D. Markfort and F. Porté-Agel

4:15 PM

4B.5

Surface Temperature Heterogeneity Effects on Dispersion in the Stable Boundary Layer

Jeffrey C. Weil, Univ. of Colorado, Boulder, CO; and P. P. Sullivan and E. G. Patton

4:30 PM

4B.6

Results from the Diurnal land/atmosphere Coupling Experiment (DICE)

Adrian Lock, Met Office, Exeter, Devon, United Kingdom; and M. Best

Handout (2.4 MB)

4B.7

Surface, boundary layer and cloud couplings over land : evaluation of CMIP5 climate simulations over West Africa

4:45 PM

4B.7A

Evaluation of soil moisture- precipitation feedback theories: Statistical approach using a convection permitting model over Indian subcontinent

Mansi Bhowmick, University of Leeds, Leeds , United Kingdom; and D. J. Parker, S. Webster, C. E. Birch, L. Garcia-Carreras, and J. H. Marsham

4B.8

Ventilation of the atmospheric boundary layer

Poster Session 1

Location: Palm Court (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

1

Atmosphere-Cryosphere Interaction over the Larsen Ice Shelf, Antarctica – the OFCAP (Orographic Flows and the Climate of the Antarctic Peninsula) Project

J. C. King, British Antarctic Survey, Cambridge, United Kingdom; and T. Lachlan-Cope, A. Kirchgaessner, A. Orr, R. Ladkin, P. Anderson, G. Marshall, A. Gadian, S. D. Mobbs, V. H. Smith, I. A. Renfrew, A. D. Elvidge, M. R. van den Broeke, P. Kuipers Munneke, and M. Weeks

Handout (2.3 MB)

2

Atmospheric Boundary Layer over shelf water Polynyas in the Weddell Sea, Antarctica

A. I. Weiss, British Antarctic Survey, Cambridge, United Kingdom; and C. Lüpkes, J. Hartmann, G. Birnbaum, A. Tetzlaff, J. C. King, T. Lachlan-Cope, R. Ladkin, and T. Vihma

3

The influence of Föhn events on the boundary layer over the Larsen Ice Shelf, Antarctica: A comparison of observations and model simulations

A. Kirchgaessner, British Antarctic Survey, Cambridge, United Kingdom; and J. C. King, T. A. Lachlan-Cope, P. S. Anderson, A. D. Elvidge, V. H. Smith, A. M. Gadian, S. D. Mobbs, I. Renfrew, G. Marshall, and A. Orr

Handout (490.5 kB)

4

Aircraft-based observations of turbulence fluxes over the Arctic marginal ice zone

Andrew D. Elvidge, University of East Anglia, Norwich, United Kingdom; and A. I. Weiss, I. Renfrew, I. Brooks, B. Brooks, T. Lachlan-Cope, J. C. King, A. Kirchgaessner, K. N. Bower, M. Gallagher, J. Dorsey, and P. A. Barrett

5

Cloud and Aerosol Measurements with the MASIN Twin Otter during ACCACIA Field Campaigns 2013

A. Kirchgaessner, British Antarctic Survey, Cambridge, United Kingdom; and T. A. Lachlan-Cope, B. J. Brooks, I. M. Brooks, J. Dorsey, V. Hamilton-Morris, and A. I. Weiss

Handout (432.9 kB)

6

Modelling the atmospheric boundary-layer of the marginal ice zone: an ACCACIA case study

Rhiannon Davies, University of East Anglia, Norwich, United Kingdom; and I. Renfrew, R. von Glasow, J. C. King, and I. M. Brooks

7

The Impact of Wave State and Breaking on Air-Sea Fluxes: Measurements from the HiWinGS Campaign

Matthew J. Amison, University of Leeds, Leeds, England; and I. M. Brooks, R. W. Pascal, M. Yang, L. Bariteau, B. W. Blomquist, B. J. Huebert, C. W. Fairall, J. Hare, H. Czerski, and A. Matei

Handout (5.3 MB)

8

Modelling the Impact of Baltic Sea Upwelling on the Atmospheric Boundary Layer

David A. J. Sproson, Uppsala University, Uppsala, Uppsala Län, Sweden; and E. Sahleé

9

In Situ Measurements of Size Resolved Sea Spray Aerosol Emissions with the Eddy Covariance Method at Svalbard (78.9°N)

Monica Mårtensson, Uppsala University, UPPSALA, Sweden; and D. Nilsson

10

Island Effect Studies on Boundary Layer Modification and Cloud Street Evolution at Barbados using Large-Eddy-Simulations

Michael Jähn, Leibniz-Institute for Tropospheric Research, Leipzig, Germany; and O. Knoth

11

Sensitivity of anaprop occurrences on the modification in the boundary-layer scheme

Maja Telišman Prtenjak, University of Zagreb, Zagreb, Croatia; and I. Horvat, M. Kvakić, I. Tomažić, M. Viher, G. Gašparac, and B. Grisogono

12

Marine Atmospheric Boundary Layer structure during an episode of cold front passage over the coastal region of the Southwestern Atlantic Ocean

Priscila C. Farias, Universidade Federal de Santa Maria, Santa Maria, Brazil; and R. B. Souza, L. P. Pezzi, and F. Rossato

13

Exploring the role of wave drag in the stable stratified oceanic and atmospheric bottom boundary layer in a stratified flume

Michal Adam Kleczek, Wageningen University, Wageningen, Netherlands; and G. J. Steeneveld and A. Paci

14

Turbulence mixing in very stable boundary layer at Dome C

Hélène Barral, LGGE UMR 5183, CNRS, Grenoble, France; and C. Genthon, C. Brun, and E. Bazile

Manuscript (4.4 MB)

15

Using structure functions to determine dissipation rates for the stable boundary layer

Franciano S. Puhales, UFSM, Santa Maria, Rio Grande do Su, Brazil; and O. C. Acevedo, G. Welter, G. A. Degrazia, G. Demarco, F. D. Costa, and L. E. Medeiros

16

An experimental and numerical study of the ABL structure in the Pannonian plain (PABLS13)

Tamás Weidinger, ELTE University of Budapest, Budapest, Hungary; and J. Cuxart, A. Z. Gyongyosi, B. Wrenger, Z. Istenes, Z. Bottyan, G. Simó, D. Tatrai, A. Jericevic, B. Matjacic, M. Kiss, and J. Jozsa

17

Estimate of the Terms of Turbulent Kinetic Energy Budget Equation in a Stratified Flow in Wind Tunnel Experiments

Giuliano Demarco, UFSM, Santa Maria, Rio Grande do Sul, Brazil; and F. S. Puhales, F. D. Costa, and O. C. Acevedo

Handout (1.3 MB) Handout (1.3 MB)

18

Observational analysis of gravity waves associated with a convective system near the Pyrenees during the BLLAST campaign

C. Román-Cascón, University Complutense of Madrid (UCM), Madrid, Spain, Spain; and C. Yagüe, S. Viana Sr., M. Sastre, G. Maqueda, M. Lothon, and I. Gómara Sr.

19

WRF sensitivity to boundary-layer and land-surface schemes during the evening transition: validation with BLLAST case study

Mariano Sastre, University Complutense of Madrid (UCM), Madrid, Madrid, Spain; and G. J. Steeneveld, C. Yagüe, C. Román-Cascón, and G. Maqueda

20

Flux-Gradient Technique with Ammer Valley Surface Layer Measurement Network

Joseph M. Smith, Universität Tübingen, 72074 Tübingen, Germany

21

Measurements and parameterization of near-surface turbulent fluxes over a grassland site in rural Beijing

Linlin Wang, Institute of Atmospheric Physics, Beijing, Beiing, China; and Z. Gao and X. Guo

22

The eddy-covariance method applied in a tethered-balloon

Guylaine Canut, CNRM, Toulouse, France; and D. Legain, B. Piguet, E. Moulin, and D. Tzanos

Handout (9.7 MB)

23

Micro-meteorology monitoring for a nationwide river development project in Korea

Yun–Kyu Lim, Korea Meteorological Administration, Seoul, Korea, Republic of (South); and C. Cho, K. R. Kim, and B. C. Choi

24

Observations of Convective Boundary Layer Depth in Chico, California by Scanning Aerosol Lidar

24A

UAV measurements of turbulence and latent heat fluxes during the Cloud, Aerosol, Radiative forcing, Dynamics EXperiment (CARDEX)

Rick M. Thomas, University of Birmingham, Birmingham, United Kingdom; and E. M. Wilcox, P. S. Praveen, K. Pistone, F. Bender, Y. Feng, and V. Ramanathan

25

Wavelet Optical Flow for 2-Component Wind Fields from Aerosol Backscatter Lidar Data

Pierre Dérian, Institut national de recherche en informatique et en automatique, Rennes, France; and C. F. Mauzey and S. D. Mayor

Handout (4.1 MB)

26

Sensitivity of the WRF model to boundary layer and land surface parameterizations: comparisons with Differential Absorption Lidar and Eddy Covariance measurements

Josipa Milovac, University of Hohenhein, Stuttgart, Germany; and K. Warrach Sagi, J. Ingwersen, A. Behrendt, F. Späth, V. Wulfmeyer, and H. D. Wizemann

27

INCORPORATING SEASONALLY VARYING SURFACE ORGANIC LAYER INTO VERSION 4 OF THE COMMUNITY LAND MODEL

Young–Hee Lee, Kyungpook National University, Daugue, Korea, Republic of (South); and Y. Li

Investigation of small scale soil moisture variability at a „homogeneous“ grass site in north-eastern Germany

28

Boundary Layer Parameterization Sensitivity During Cold Surger on Southern Brazil

D. Caetano Santos Sr., UFSM - Universidade Federal de Santa Maria, Santa Maria, Brazil; and A. Battisti, E. L. Nascimento, O. C. Acevedo, and D. R. Roberti

29

The Possible Effects of Global Warming on Cropping Systems in China I. The Possible Effects of Climate Warming on Northern Limits of Cropping Systems and Crop Yields in China

Xiaoguang Yang, China Agricultural University, Beijing, Beijing, China; and Z. Liu and F. Chen

30

Frequent Near-Neutral Atmospheric Conditions over Boreal Wetlands Improve the Estimation of Daily Evapotranspiration in Remote Areas

Pierre-Erik Isabelle, Université Laval, Quebec City, Quebec, Canada; and D. F. Nadeau, A. N. Rousseau, C. Coursolle, and H. A. Margolis

31

Soil Moisture Dynamics and Evaporation in Arid Alpine Environments

Chaoxun Hang, University of Utah, Salt Lake City, UT; and E. R. Pardyjak, D. F. Nadeau, D. Jensen, and S. W. Hoch

32

The vertical structure of the Saharan atmospheric boundary layer: insights from a large eddy model and observations

Luis Garcia-Carreras, Stockholm University, Stockholm, Sweden; and D. J. Parker, J. H. Marsham, P. D. Rosenberg, I. M. Brooks, A. Lock, F. Marenco, J. B. McQuaid, and M. Hobby

33

A Model Study of the Relationship between Convergence and Deep Convection

Cathryn E. Birch, UK Met Office, Leeds, West Yorkshire, United Kingdom; and J. H. Marsham, D. J. Parker, and C. M. Taylor

34

Global potential of dust devil occurrence

Bradley Colin Jemmett-Smith, University of Leeds, Leeds, United Kingdom; and J. H. Marsham, P. Knippertz, and C. Gilkeson

35

The role of convectively-generated cold pools on model biases in the boundary-layer thermodynamics of the Sahara

Luis Garcia-Carreras, Stockholm University, Stockholm, Sweden; and J. H. Marsham, D. J. Parker, C. L. Bain, S. F. Milton, A. Saci, M. Salah-Ferroudj, B. Ouchene, and R. Washington

36

Modeling a mountain-wave event over the Pyrenees

Mireia Udina, University of Barcelona, Barcelona, Catalunya, Spain; and S. R. Soler, O. Sol, M. Aran, and J. Cunillera

Session 5A

Observations and Modelling in Urban Boundary Layers - 3

Location: Queens Ballroom (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: Janet Barlow, Univ. of Reading

8:00 AM

5A.1

Numerical study of urbanization influence on local and regional climate of Yangtze River Delta, China

Ning Zhang, Nanjing University, Nanjing, China

8:15 AM

5A.2

Numerical simulations of boundary-layer processes and urban-induced alterations in an Alpine valley

Lorenzo Giovannini, University of Trento, Trento, Italy; and D. Zardi, M. de Franceschi, and F. Chen

Handout (27.6 MB)

8:30 AM

5A.3

The seasonal variation of the urban convective boundary layer: results from the ACTUAL project for London

Christos Halios, University of Reading, Reading, United Kingdom; and J. Barlow

8:45 AM

5A.4

A Multiscale Modeling Framework for the Simulation of Momentum, Energy, and Moisture Transport in Complex Urban Canopies

Rob Stoll, University of Utah, Salt Lake City, UT; and E. Pardyjak, P. Willemsen, J. Steenburgh, A. K. Kochanski, B. Bailey, M. Overby, K. A. Briggs, and D. Alexander

9:00 AM

5A.5

Assessing the ability of a high-resolution forecast model to represent the weather in London

Siân E. Lane, University of Reading, Shortstown, United Kingdom; and J. F. Barlow and H. Lean

9:15 AM

5A.6

Semi-empirical modeling of urban heat island using climate classification and mobile measurements

François E. Leconte, CEREMA, Nancy, France; and J. Bouyer, R. Claverie, and M. Pétrissans

Manuscript (649.4 kB)

9:30 AM

5A.7

Simulating the daytime and nighttime urban heat island effect on neighbourhood scale

PJC Schrijvers, TU Delft, Delft, Netherlands; and H. Jonker, S. de Roode, and S. Kenjeres

Handout (1.1 MB)

9:45 AM

5A.8

Summer in the city - Forecasting and Mapping Human Thermal Comfort in Urban Areas

Gert-Jan Steeneveld, Wageningen University, Wageningen, Netherlands; and B. G. Heusinkveld, R. J. Ronda, J. J. Attema, M. V. D. Harst, and A. A. M. Holtslag

Session 5B

Polar Boundary Layers

Location: John Charles Suite (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: J. C. King, British Antarctic Survey

8:30 AM

5B.1

Numerical Modeling of Sensitivity of Arctic Atmospheric Condition to Sea Ice Changes

Yi Jin, NRL, Monterey, CA; and S. Wang, S. Gabersek, and J. E. Nachamkin

8:45 AM

5B.2

The impact of form drag on atmospheric transfer coefficients over fractional sea ice cover for neutral and non-neutral stability

Christof Lüpkes, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany; and V. M. Gryanik and W. Dorn

9:00 AM

5B.3

Heat Flux Variation over Sea-ice Observed at the Coastal Area of the King Sejong Station, Antarctica

Sang-Jong Park, Korea Polar Research Institute, Incheon, Korea, Republic of (South); and T. J. Choi and S. J. Kim

9:15 AM

5B.4

Atmospheric boundary layer modification over sea ice leads in the Northern Fram Strait: a study based on aircraft measurements during the campaign STABLE 2013

Amelie Tetzlaff, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany; and C. Lüpkes, J. Hartmann, G. Birnbaum, T. Vihma, and T. Nygård

5B.5

Low-level baroclinicity and the ABL evolution during cold-air outbreaks in high latitudes: a simple model

5B.6

The Polar boundary layer over High Arctic tundra in summer

Coffee Break

Location: Ark Royal (Queens Hotel)

Session 6A

Observations and Modelling in Urban Boundary Layers - 4 / Flows in Plant Canopies - 1

Location: Queens Ballroom (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: C. Sue B. Grimmond, University of Reading

10:30 AM

6A.1

Comparing eddy covariance fluxes of carbon dioxide, latent and sensible heat for Dublin using TK3, EddyPro and EddyUH

Stephanie Keogh, National University of Ireland, Maynooth, Maynooth, Co Kildare, Ireland; and R. Fealy and G. Mills

10:45 AM

6A.2

Carbon Dioxide Storage in an Urban Environment

Alex Benjamin Bjorkegren, King's College London, London, United Kingdom; and C. S. B. Grimmond and S. Kotthaus

11:00 AM

6A.3

Large-Eddy Simulation of Tracer Gas Dispersion Events with Focus on Peak Concentration in the Mock Urban Setting Test Experiment MUST

Marcel König, Leibniz-Institute for Tropospheric Research, Leipzig, Germany; and O. Knoth

Handout (12.4 MB)

11:15 AM

6A.4

How much is traffic responsible for upwind dispersion of a tracer in central London?

D. Martin, Atmospheric Chemistry Research Group (ACRG), Bristol, United Kingdom; and I. R. White, F. Petersson, A. Robins, J. F. Barlow, C. R. Wood, A. Tomlin, and D. Shallcross

11:30 AM

6A.5

The source/sink distribution of scalars in vegetation canopies: key to the understanding of covariances of passive and reactive compounds

Arnold F. Moene, Wageningen University, Wageningen, Netherlands; and E. G. Patton

Handout (548.5 kB)

11:45 AM

6A.6

Mean and turbulent flows in and above a forest canopy during a prescribed burn event in the New Jersey Pine Barrens: observations and simulations using ARPS-CANOPY

Michael T. Kiefer, Michigan State University, East Lansing, MI; and S. Zhong, W. E. Heilman, J. J. Charney, and X. Bian

Session 6B

Stable Boundary Layers 1 - Intermittency & Variability of Turbulence

Location: John Charles Suite (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: Jielun Sun, NCAR

10:30 AM

6B.1

Probing the role of buoyancy in the stable atmospheric boundary layer: direct and large-eddy simulations

Elie Bou-Zeid, Princeton University, Princeton, NJ; and S. Shah

10:45 AM

6B.2

Investigating turbulence regimes in the weakly stably-stratified boundary layer with Large-Eddy Simulation

Mireia Udina, University of Barcelona, Barcelona, Catalunya, Spain; and J. Sun, B. Kosovic, and M. R. Soler

11:00 AM

6B.3

Small-scale horizontal variability of scalars and turbulent fluxes in the stable boundary layer

O. C. Acevedo, Universidade Federal de Santa Maria, Santa Maria, Brazil; and L. E. Medeiros, P. E. S. Oliveira, D. M. Santos, G. M. Silva, and F. D. Costa

11:15 AM

6B.4

Structures, temperature fronts, and intermittent behavior in stable boundary layers

Peter P. Sullivan, NCAR, Boulder, CO; and J. C. Weil, E. G. Patton, and D. V. Mironov

11:30 AM

6B.5

Intermittency of turbulence in the stable atmospheric boundary layer: a field data and stochastic modeling approach

Nikki Vercauteren, Freie Universitaet Berlin, Berlin, Germany; and R. Klein

11:45 AM

6B.6

Upward propagation of turbulence bursts in the nocturnal boundary layer

Felipe D. Costa, Universidade Federal do Pampa, Alegrete, Brazil; and G. Welter, O. C. Acevedo, L. E. Medeiros, and F. S. Puhales

Lunch Break

Location: Palm Court/Queens Grill (Queens Hotel)

Session 7A

Flows in Plant Canopies - 2

Location: Queens Ballroom (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: M. Chamecki, The Univ. of California

1:30 PM

7A.1

The Creation and Evolution of Coherent Structures in Canopy Flows

Brian Bailey, University of Utah, Salt Lake City, UT; and R. Stoll

1:45 PM

7A.2

Flux measurements in complex, forested terrain

Andrew N. Ross, University of Leeds, Leeds, West Yorkshire, United Kingdom; and R. Grant

Handout (760.0 kB)

2:00 PM

7A.3

Adjustment of turbulence to a forest canopy

Ian N. Harman, CSIRO Marine and Atmospheric Research, Canberra, Australia; and M. Bohm, J. J. Finnigan, and D. Hughes

2:15 PM

7A.4

Mean and Turbulent Flow Statistics in a Trellised Agricultural Canopy

Nathan E. Miller, University of Utah, Salt Lake City, UT; and B. N. Bailey, R. Stoll, W. Mahaffee, and E. R. Pardyjak

Handout (2.1 MB)

2:30 PM

7A.5

Characteristic of the flow over an urban to a vegetation terrain transition : a wind tunnel study

Laurent Perret, Centrale Nantes, Nantes, France; and L. Dong

Handout (6.3 MB)

2:45 PM

7A.6

Fragmented landscape: Impact on atmospheric flow and tree stability

Christopher Poëtte, INRA Centre de Bordeaux Aquitaine, Bordeaux, France; and B. A. Gardiner, S. Dupont, Y. Brunet, M. Bohm, I. N. Harman, J. Finnigan, and D. Hughes

Handout (5.6 MB)

Session 7B

Stable Boundary Layers 2 - Low Level Winds & Wind Speed Jets

Location: John Charles Suite (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: Robert John Beare, University of Exeter

1:30 PM

7B.1

Predicting Nocturnal Boundary Layer Regimes: An Observational Study

Ivo G.S. van Hooijdonk, Eindhoven University of Technology, Eindhoven, Netherlands; and J. M. M. Donda, F. C. Bosveld, A. F. Moene, H. J. H. Clercx, B. J. H. Van de Wiel, and J. Sun

Handout (2.0 MB)

1:45 PM

7B.2

The minimum wind speed for sustainable turbulence in the nocturnal boundary layer

Bas J.H. Van de Wiel, Delf University of Technology, Delft, Netherlands; and J. M. M. Donda, I. G. S. Van Hooijdonk, P. Baas, A. Moene, H. J. J. Jonker, H. J. H. Clercx, and J. Sun

2:00 PM

7B.3

Investigating low-level jet wind profiles using two different lidars

Brian Joseph Vanderwende, Univ. of Colorado, Boulder, CO; and J. K. Lundquist

Handout (1.5 MB)

2:15 PM

7B.4

Analysis of Turbulence and Thermodynamics Associated with Low-Level Jets

Timothy A. Bonin, NOAA/CIRES, Boulder, CO; and P. M. Klein, P. B. Chilson, J. F. Newman, W. G. Blumberg, and D. D. Turner

2:30 PM

7B.5

Stable Boundary-Layer Turbulence Profile Shape beneath a Low-Level Jet

Robert M. Banta, NOAA/ERL/ETL, Boulder, CO; and Y. L. Pichugina and W. A. Brewer

2:45 PM

7B.6

Analysis of katabatic flow using infrared imaging at micro and meso scale

Martina Grudzielanek, Ruhr-Universität Bochum, Bochum, Germany; and R. Vogt and J. Cermak

Coffee Break

Location: Ark Royal (Queens Hotel)

Session 8A

Flows in Plant Canopies - 3

Location: Queens Ballroom (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Cochairs: Edward (Ned) Garrett Patton, NCAR; Shane D. Mayor, California State Univ.

3:30 PM

8A.1

Modeling and measuring turbulent recirculation bubbles over complex terrain: mixing mechanisms for forest-atmosphere exchanges

Chuixiang Yi, City University of New York, Flushing, NY; and E. Kutter, X. Xu, G. Hendrey, T. T. Eaton, H. Liu, and W. Wang

3:45 PM

8A.2

Canopy-Boundary Layer Coupling in Convectively Unstable Flows

John J. Finnigan, CSIRO, Canberra, ACT, Australia; and E. G. Patton and R. H. Shaw

4:00 PM

8A.3

Non-linear interaction between the lower-atmosphere and vegetation canopy flows

Laurent Perret, Centrale Nantes, Nantes, France; and E. G. Patton

Handout (1010.5 kB)

4:15 PM

8A.4

Boundary layer flow over forest canopies of variable density

Andrew N. Ross, University of Leeds, Leeds, West Yorkshire, United Kingdom

Handout (800.1 kB)

4:30 PM

8A.5

Influence of non-flat terrain and wind direction shear on canopy turbulence

Young–Hee Lee, Kyungpook National University, Daugue, Korea, Republic of (South)

4:45 PM

8A.6

Sensitivity Analyses of SwayLES: A Coupled 3-D Large-Eddy Simulation Tree-Sway Model

Hong-Bing Su, East Carolina University, Greenville, NC; and D. R. Miller, A. L. Hiscox, and M. Rudnicki

5:00 PM

8A.7

Plant Reconfiguration and Consequences for Turbulence and Dispersion Inside Plant Canopies

M. Chamecki, The Univ. of California, Los Angeles, CA; and Y. Pan, E. M. Follett, H. Nepf, and S. A. Isard

5:15 PM

8A.8

A Lagrangian Investigation of Momentum and Scalar Transport in Plant Canopies

Brian Bailey, University of Utah, Salt Lake City, UT; and R. Stoll

5:30 PM

8A.9

Characterizing the forest exchange during a deforestation experiment at the TERENO site Wüstebach

Clemens Drüe, University Trier, Trier, Germany; and P. Ney, A. Graf, T. Pütz, and G. Heinemann

Session 8B

Stable Boundary Layers 3

Location: John Charles Suite (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: Joan Cuxart, Universitat de les Illes Balears

3:30 PM

8B.1

Analysis of the weak-wind stable boundary layer using spatially distributed wind and temperature observations from active fiber-optic distributed temperature sensing

Christoph K. Thomas, Oregon State University, Corvallis, OR; and C. Sayde and J. S. Selker

3:45 PM

8B.2

Stable Boundary Layer Characterization in an Orographic Complex Region: the Field Measurement Campaign KASCADE

Gert-Jan Duine, Commissariat à l'Energie Atomique (CEA), Cadarache, France; and P. Durand, T. Hedde, P. Roubin, F. Lohou, M. Lothon, P. Augustin, M. Fourmentin, C. Jarnot, S. Derrien, P. Medina, and E. Pique

Handout (2.6 MB)

4:00 PM

8B.3

Evaluation of the Weather Research Forecasting model for three contrasting sites over snow in stable conditions with light winds

H. A. M. Sterk, Wageningen University, Wageningen, Netherlands; and G. J. Steeneveld, T. Vihma, P. S. Anderson, F. C. Bosveld, and A. A. M. Holtslag

4:15 PM

8B.4

Turbulence Measurements from a Near-Field Pollutants Dispersion Campaign in a Stratified Surface Layer

Xiao Wei, CEREA (Atmospheric Environment Teaching and Research Centre), Chatou, France; and E. Dupont, B. Carissimo, E. Gilbert, and L. Musson-Genon

Manuscript (732.6 kB)

Handout (3.0 MB)

4:30 PM

8B.5

The Role of Radiation in the Surface Flux Budget of the Nocturnal Boundary Layer: A Question of Timescale

John M. Edwards, Met Office, Exeter, United Kingdom

Manuscript (84.7 kB)

Handout (607.4 kB)

4:45 PM

8B.6

Radiation fogs over two sites at Southern and Northern Europe (Spain and The Netherlands)

C. Román-Cascón, University Complutense of Madrid (UCM), Madrid, Spain, Spain; and C. Yagüe, G. J. Steeneveld, M. Sastre, and G. Maqueda

5:00 PM

8B.7

Forecasting Fog with a Very High Resolution Model

Ian A. Boutle, Met Office, Exeter, United Kingdom; and A. Finnenkoetter

Handout (1.6 MB)

5:15 PM

8B.8

GABLS4: AN INTERCOMPARISON CASE TO STUDY THE STABLE BOUNDARY LAYER WITH SURFACE INTERACTIONS ON THE ANTARCTIC PLATEAU

Eric Bazile, CNRM/CNRS, Toulouse, France; and O. Traullé, H. Barral, V. Guidard, A. A. M. Holtslag, G. Svensson, and T. Vihma

5:30 PM

8B.9

Similarity Theory Based on Dougherty-Ozmidov Scaling

Andrey A. Grachev, CIRES, University of Colorado, and NOAA/ESRL, Boulder, Colorado; and E. L. Andreas, C. W. Fairall, P. S. Guest, and P. O. G. Persson

Handout (1.9 MB)

5:45 PM

8B.10

Gradient-based similarity in the stable atmospheric boundary layer

Zbigniew Sorbjan, Institute of Geophysical Sciences, Polish Academy of Sciences, Warsaw, Poland

Session 9A

Convective Boundary Layers 1

Location: Queens Ballroom (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: Marie Lothon, Laboratoire d'Aérologie, UMR CNRS/UPS 5560, Observatoire Midi-Pyrénées, France

8:30 AM

9A.1

The Two-layer Structure of the Entrainment Zone in the Convective Boundary Layer

Jade Rachele Garcia, Max Planck Institute for Meteorology, Hamburg, Germany; and J. P. Mellado

8:45 AM

9A.2

Boundary layer top detrainment and its impact on boundary layer growth in the Sahara

Luis Garcia-Carreras, Stockholm University, Stockholm, Sweden; and D. J. Parker, J. H. Marsham, P. D. Rosenberg, I. M. Brooks, A. P. Lock, F. Marenco, J. B. McQuaid, and M. Hobby

9:00 AM

9A.3

Effects of Aerosols on the Convective Boundary-Layer Dynamics and Land-Atmosphere System

Eduardo Barbaro, Wageningen University, Wageningen, Netherlands; and J. Vila-Guerau de Arellano, H. G. Ouwersloot, J. Aan de Brugh, J. Schroter, D. P. Donovan, and M. C. Krol

9:15 AM

9A.4

Quantifying Particle Size and Turbulent Scale Dependence of Dust Uplift in the Sahara Using Aircraft Measurements

Philip D. Rosenberg, University of Leeds, Leeds, United Kingdom; and D. J. Parker, C. L. Ryder, J. H. Marsham, L. Garcia-Carreras, J. Dorsey, I. M. Brooks, A. R. Dean, J. Crosier, J. B. McQuaid, and R. Washington

9:30 AM

9A.5

The Effects of Turbulence and Gust on Sand Erosion and Dust Entrainment during Dust Storm

Xueling Cheng, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; and F. Hu and Q. Zeng

Manuscript (24.9 kB)

Handout (1.5 MB)

9:45 AM

9A.6

Investigating the effects of surface heterogeneity on the vertical structure of the Saharan convective boundary layer using large eddy simulation

Georgios Papangelis, National and Kapodistrian University of Athens, Athens, Greece; and M. Tombrou and J. Kalogiros

Session 9B

Theoretical and practical issues associated with multi-scale simulations

Location: John Charles Suite (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: B. Kosovic, NCAR

8:30 AM

9B.1

Large-eddy simulations of marine boundary layers above a measured spectrum of phase-resolved nonlinear ocean waves

Peter P. Sullivan, NCAR, Boulder, CO; and A. De Paolo, Y. Liu, J. C. McWilliams, W. K. Melville, L. Romero, E. J. Terrill, C. L. Vincent, and D. K. P. Yue

8:45 AM

9B.2

Multiscale simulations of atmospheric boundary-layer flows

Domingo Muñoz-Esparza, LANL, Los Alamos, NM; and B. Kosovic and J. D. Mirocha

9:00 AM

9B.3

Can we produce realistic boundary layer turbulence by coupling large-eddy simulations with mesoscale model data?

Rieke Heinze, Leibniz University Hannover, Hannover, Germany; and L. Boeske, C. Moseley, B. Stevens, and S. Raasch

Handout (2.5 MB)

9:15 AM

9B.4

Quantifying the transition from Large-eddy to Mesoscale boundary-layer simulations under Different Forcings

G. A. Efstathiou, University of Exeter, Exeter, United Kingdom; and R. J. Beare and J. Thuburn

9:30 AM

9B.5

Enabling Multi-scale Simulations in WRF Through Vertical Grid Nesting

David J. Wiersema, University of California, Berkeley, Berkeley, CA; and K. A. Lundquist and F. K. Chow

Manuscript (4.3 MB)

9:45 AM

9B.6

Vertical Grid Nesting For Improved Surface Layer Resolution In Large-Eddy Simulation

Sadiq Huq, Karlsruhe Institute of Technology (KIT), Garmisch-Partenkirchen, Germany; and F. De Roo, S. Raasch, and M. Mauder

Handout (937.5 kB)

Coffee Break

Location: Ark Royal (Queens Hotel)

Session 10A

Convective Boundary Layers 2

Location: Queens Ballroom (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: Wayne M. Angevine, CIRES, University of Colorado, and NOAA/ESRL

10:30 AM

10A.1

The influence of convective parameterisation on sea breeze dynamics and convection initiation over the Maritime Continent

Cathryn E. Birch, UK Met Office, Leeds, West Yorkshire, United Kingdom; and M. J. Reeder and M. J. Roberts

10:45 AM

10A.2

Scaling laws for the heterogeneously heated free convective boundary layer

Chiel C. Van Heerwaarden, Wageningen University, Wageningen, Netherlands; and J. P. Mellado and A. De Lozar

11:00 AM

10A.3

A Large-Eddy Simulation Study of Convective Boundary Layers over Flat and Urban-Like Surfaces

Seung-Bu Park, Columbia University, New York, NY; and J. J. Baik

11:15 AM

10A.4

The daily cycle of the atmospheric boundary layer over pasture site in Amazonia

Theomar T. A. T. Neves, INPE/LUH, São José dos Campo, Brazil; and G. Fisch, R. M. N. Santos, and S. Raasch

10A.5

Convective Boundary Layer Depth and Morphology, Observations with an S-band Weather Radar

11:30 AM

10A.6

Modeling the Diurnal Cycle of Conserved and Reactive Species in the Convective Boundary Layer

Donald H. Lenschow, NCAR, Boulder, CO; and D. Gurarie and E. G. Patton

Session 10B

General Topics

Location: John Charles Suite (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: Robert M. Banta, NOAA/ERL/ETL

10:30 AM

10B.1

A perspective method of the Pasquill-Gifford atmospheric stability classes calculation based on Planetary Boundary Layer model

Alexander Sergeevich Gavrilov, Russian State Hydrometeorological University, Saint-Petersburg, Russia; and V. V. Bezlepkin, M. A. Karaseva, A. S. Frolov, and E. V. Kharchenko

10:45 AM

10B.2

Universal Characteristics in the Deepening Rate of Sheared Convective and Stable Boundary Layers

Harmen J. J. Jonker, Delft University of Technology, Delft, Netherlands; and M. van Reeuwijk, P. P. Sullivan, and B. J. H. Van de Wiel

11:00 AM

10B.3

Trends in planetary boundary layer height over Europe

Dian J. Seidel, NOAA, College Park, MD; and Y. Zhang and S. Zhang

11:15 AM

10B.4

Timescales in the nocturnal, wintertime boundary layer over heterogeneous surface

Karmen Babić, University of Zagreb, Zagreb, Croatia; and Ž. Večenaj and Z. Bencetić Klaić

11:30 AM

10B.5

Numerical Simulation of Turbulent Flow in the Atmospheric and Oceanic Boundary Layers

X. Wen, University, Leeds, West Yorkshire, United Kingdom

10B.6

The impact of mesoscale circulations on boundary layer evolution and air quality during DISCOVER-AQ

11:45 AM

10B.6A

A new land-atmosphere-and-climate experiment at the Birmingham Institute of Forest Research (BIFoR)

A. Robert MacKenzie, University of Birmingham, Birmingham, West Midlands, United Kingdom

Lunch Break

Location: Palm Court/Queens Grill (Queens Hotel)

Session 11

Turbulence Measurement 1: Eddy Covariance

Location: Queens Ballroom (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Cochairs: Ian M. Brooks, University of Leeds; John M. Edwards, Met Office; Julie K. Lundquist, University of Colorado

1:30 PM

11.1

The Eddy-Covariance Method - History, Status, and Prospects (Invited Presentation)

Thomas Foken, University of Bayreuth, Bayreuth, Germany

Handout (3.7 MB)

2:15 PM

11.2

Determination of nonstationarity in turbulence time series using different methods

Željko Večenaj, University of Zagreb, Zagreb, Croatia; and S. F. J. De Wekker

2:30 PM

11.3

EC-Frame – a quality-control toolbox for the ECPACK eddy-covariance software

Clemens Drüe, University Trier, Trier, Germany

Session 12

Morning and Afternoon Transitional Behavior of the Boundary Layer - 1

Location: John Charles Suite (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: John M. Edwards, Met Office

2:30 PM

12.1

Towards a Better Understanding of the Early Morning Boundary Layer Transition, Using Observations of Small Unmanned Aerial Vehicles (UAV)

Norman Wildmann, Eberhard-Karls-University Tübingen, Tübingen, Germany; and G. A. Rau, A. Platis, and J. Bange

2:45 PM

12.2

Morning Transition of Steep Slope Flows in a Narrow Alpine Valley

Daniel F. Nadeau, Polytechnique Montreal, Montreal, QC, Canada; and H. J. Oldroyd, E. R. Pardyjak, N. Sommer, and M. B. Parlange

Coffee Break

Location: Ark Royal (Queens Hotel)

Session 13A

Boundary Layer and Turbulence Measurement - 2: Innovative Technologies and Techniques

Location: Queens Ballroom (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: Ian M. Brooks, University of Leeds

3:30 PM

13A.1

Lower Atmospheric Thermodynamics and Turbulence Experiment (LATTE): Overview and Initial Results

Phillip B. Chilson, University of Oklahoma, Norman, OK; and B. Argrow, K. S. Barr, T. A. Bonin, W. O. J. Brown, S. A. Cohn, S. Ellis, P. M. Klein, A. Muschinski, J. F. Newman, S. P. Oncley, L. M. Root, S. Tichkule, T. M. Weckwerth, S. Wharton, and D. E. Wolfe

3:45 PM

13A.2

Recent progress in 2-component wind field observations by the REAL and motion estimation algorithms

Shane D. Mayor, California State Univ., Chico, CA; and P. Dérian, C. F. Mauzey, and M. Hamada

4:00 PM

13A.3

Comparison of Convective Mixing Layer Heights Retrieved by Ceilometer and Doppler Lidar

Joshua D. Vande Hey, University of Leicester, Leicester, Leicestershire, United Kingdom; and J. Agnew, J. Richards, and M. Brettle

Manuscript (251.4 kB)

4:15 PM

13A.4

Experimental design for measuring CO2 emissions from soils in the lower atmosphere using unmanned aerial vehicles

Uwe Putze, Eberhard Karls Universität Tübingen, Tübingen, Germany; and J. Bange

4:30 PM

13A.5

State of the Art In-Situ Turbulence Measurements With Unmanned Aerial Systems (UAS) in the ABL

Norman Wildmann, Eberhard-Karls-University Tübingen, Tübingen, Germany; and J. Bange

4:45 PM

13A.6

3D turbulence measurements in inhomogeneous boundary layers with three wind LiDARs

Fernando Carbajo Fuertes, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland; and G. V. Iungo and F. Porté-Agel

5:00 PM

13A.7

Using a Micro-UAV as a Portable Turbulence Profiler (PTP) for atmospheric research

P. S. Anderson, Scottish Association for Marine Science, Oban, Argyll and Bute, United Kingdom

5:15 PM

13A.8

Instrumented car for mobile turbulence measurements

Danijel Belusic, Monash University, Melbourne, Victoria, Australia; and D. H. Lenschow and N. J. Tapper

Session 13B

Morning and Afternoon Transitional Behavior of the Boundary Layer - 2

Location: John Charles Suite (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: John M. Edwards, Met Office

3:30 PM

13B.1

Sub-kilometric heterogeneity effects on the surface energy budget in BLLAST'11

Joan Cuxart, Universitat de les Illes Balears, Palma de Mallorca, Balearic Islands, Spain; and B. Wrenger, J. Duennermann, D. Martinez, M. A. Jimenez, L. Conangla, J. Reuder, M. O. Jonassen, M. Lothon, F. Saïd, and F. Lohou

3:45 PM

13B.2

An intercomparison of mesoscale simulations during the Boundary Layer Late Afternoon and Sunset Turbulence (BLLAST) experimental field campaign

Maria Antonia Jimenez, Institut Mediterrani d'Estudis Avançats (IMEDEA), UIB-CSIC, Esporles, Balearic Islands, Spain; and W. M. Angevine, E. Bazile, F. Couvreux, J. Cuxart, D. Pino, and M. Sastre

4:00 PM

13B.3

Diurnal Wind Cycles Forcing Inertial Oscillations: A Latitude-Dependent Resonance Phenomenon

Ryosuke Shibuya, The University of Tokyo, Bunkyo-ku, Tokyo, Japan; and K. Sato and M. Nakanishi

4:15 PM

13B.4

Toward understanding surface sensible heat fluxes during transitional stability over contrasting surfaces

Derek Jensen, University of Utah, Salt Lake City, UT; and E. R. Pardyjak and S. W. Hoch

4:30 PM

13B.5

Evolution of the turbulence during the afternoon transition of the convective boundary layer: a spectral analysis

Clara Darbieu, Laboratoire d'Aerologie, University of Toulouse, CNRS, France, Campistrous, France; and F. Lohou, M. Lothon, F. Couvreux, D. Pino, P. Durand, E. Blay, and J. Vilà

Manuscript (706.5 kB)

4:45 PM

13B.6

Upon turbulence structure, anisotropy and the evolution of length scales in the afternoon and evening transition

Erik Nilsson, Laboratoire d'Aerologie, University of Toulouse, CNRS, France and Uppsala University, Sweden, Lannemezan, France; and M. Lothon, F. Lohou, and L. Mahrt

5:00 PM

13B.7

Study of the atmospheric boundary layer evening transitions using two different datasets: An observational and numerical approach

Mariano Sastre, University Complutense of Madrid (UCM), Madrid, Spain; and C. Yagüe, C. Román-Cascón, and G. Maqueda

5:15 PM

13B.8

Evening transition characteristics on a slope in an arid environment

Eric R. Pardyjak, Univ. of Utah, Salt Lake City, UT; and S. Hoch, D. D. Jensen, N. Gunawardena, C. D. Whiteman, S. Di Sabatino, L. Leo, C. Higgins, and H. J. S. Fernando

Poster Session 2

Location: Palm Court (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

37

Role of snow/ice cover in the Himalayan air mass exchange between the surface and the Troposphere

Shupo Ma Sr., Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; and L. Zhou Sr. and H. Zou

38

Large Eddy Simulation of neutrally stratified and convective planetary boundary layers

Sergei Yu Artamonov, Marine Hydrophysical Institute/Moscow Lomonosov State University , Sevastopol, Ukraine; and M. V. Shokurov

39

Large-Eddy Simulation of Energy Balance Closure in fully Heterogeneous Terrain

Frederik De Roo, Karlsruhe Institute of Technology (KIT), Garmisch-Partenkirchen, Germany; and S. Huq, S. Zhang, and M. Mauder

40

Dependence of Boundary Layer Separation on Surface Friction and Different Mountain Flow Regimes: An Analysis Based on Large-Eddy-Simulations

Johannes Sachsperger, University of Vienna, Vienna, Austria; and S. Serafin and V. Grubisic

41

Quantitative estimation of turbulence intensity in mountain flows from airborne Doppler radar measurements

Lukas Strauss, University of Vienna, Vienna, Austria; and S. Serafin and V. Grubisic

42

Sensitivity of bora turbulence to the analysis procedures

Zeljko Vecenaj, University of Zagreb, Faculty of Science, Zagreb, Croatia; and I. Odak, M. Hrastinski, and B. Grisogono

43

Impact of stationarity criteria on surface layer similarity functions in complex terrain

Nevio Babic, University of Virginia, Charlottesville, VA; and Z. Vecenaj and S. F. J. De Wekker

44

The influence of a down-valley wind on the development of a cold air pool in an Alpine valley

Gabriele Arduini, Centre for Atmospheric & Instrumentation Research, Hatfield, United Kingdom; and C. Staquet and C. Chemel

45

The impacts of sidewall canopy cover on the formation of temperature inversions in an idealized valley

Michael T. Kiefer, Michigan State University, East Lansing, MI; and S. Zhong

46

Evaluation of WRF-LES for Dispersion and Transport Modeling Over Complex Terrain

Christopher Nunalee, North Carolina State University, Raleigh, North Carolina ; and B. Kosovic and P. Bieringer

47

Enabling high-resolution simulations of atmospheric flow over complex terrain in the WRF model

Katherine A. Lundquist, LLNL, Livermore, CA; and J. D. Mirocha, J. Bao, D. J. Wiersema, and F. K. Chow

Handout (3.9 MB)

48

Impact of surface heat flux differences on mixed-layer height: ground-based remote sensing measurements at Yatir forest, Israel

Fabian Eder, Karlsruhe Institute of Technology (KIT), Garmisch-Partenkirchen, Germany; and E. Rotenberg, D. Yakir, H. P. Schmid, and M. Mauder

Handout (3.6 MB)

49

How representative are measurements from a single tower? Implications from a highly resolved wind tunnel study

Ian N. Harman, CSIRO Marine and Atmospheric Research, Canberra, Australia; and M. Bohm, J. J. Finnigan, and D. Hughes

50

Modeling the Exchange of Energy and Matter for a Forest-Clearing Transition Area with Taking Particular Account of Coherent Structures

Kathrin Gatzsche, Leibniz-Institute for Tropospheric Research, Leipzig, Germany; and W. Babel, E. Falge, R. D. Pyles, A. Raabe, and T. Foken

51

Estimation of optical turbulence with standard weather-station observations

Anneke van de Boer, Bonn University and Wageningen University, Wageningen, Netherlands; and A. F. Moene, A. Graf, C. Simmer, and A. A. M. Holtslag

52

Observing horizontal wind transects over an urban terrain with scintillometer and lidar technologies

Daniëlle van Dinther, Wageningen University, Wageningen, Netherlands; and C. R. Wood, O. Hartogensis, E. J. O'Connor, and A. Nordbo

53

A Large-Eddy Simulation Study of Turbulent Flow and Ventilation in a Densely Built-Up Urban Area

Seung-Bu Park, Columbia University, New York, NY; and J. J. Baik and S. H. Lee

54

Modeling the Influence of Open Water Surfaces on the Summertime Temperature and Thermal Comfort in the City

Natalie Theeuwes, Wageningen University, Wageningen, Netherlands; and A. Solcerová and G. J. Steeneveld

55

Modelling NO2 in Urban Environment Using CFD

Antoine Jeanjean, The University of Leicester, Leicester, United Kingdom

56

Characteristics of Momentum, Heat and Moisture Fluxes in the Urban Roughness Sublayer

Jun Zou, Nanjing University, Nanjing, China; and J. Sun and N. Zhang

Poster 57 has been moved. New paper number is 16A.3A

58

Effects of Positive versus Negative Yaw Angles on Wind-Turbine Performance: An Application of BEM Theory

Majid Bastankhah, École polytechnique Fédérale de Lausanne (EPFL), Lausanne, Vaud, Switzerland; and F. Porté-Agel

59

Evaluating the Parameterization of Entrainment Process through the Large-Eddy Simulation

Peng Liu, Nanjing University, Nanjing, Jiangsu, China; and L. Shen and J. Sun

60

A comparison of Eddy Diffusivity Mass Flux schemes for simulation of the planetary boundary layer and shallow cloud

Wayne M. Angevine, CIRES, University of Colorado, and NOAA/ESRL, Boulder, CO; and K. Suselj, Y. Bouteloup, M. P. Lefebvre, B. Galperin, G. Matheou, S. Riette, C. Rio, E. M. Tastula, J. Teixeira, M. Thatcher, and P. Hurley

61

The Impact of Longwave Radiation on the Morning Transition: Results from the GABLS3 Large-Eddy Simulation

John M. Edwards, Met Office, Exeter, United Kingdom; and S. Basu, F. C. Bosveld, and A. A. M. Holtslag

Handout (597.1 kB)

62

Understanding the effects of multi-scale flow interactions on convective boundary layer depth

Stefano Serafin, University of Vienna, Vienna, Austria; and S. F. J. De Wekker

Handout (3.6 MB)

63

Simulation of atmospheric turbulence observations: fractal turbulence

A.C.P. Oude Nijhuis, Delft University of Technology, Delft, Netherlands; and O. A. Krasnov, C. M. H. Unal, H. W. J. Russchenberg, and A. Yarovoy

Handout (1.1 MB)

64

Effects of Reduction in Parameterized Heat Transport to Convective Boundary Layer Simulations at Gray-Zone Resolutions

Hyeyum (Hailey) Shin, NCAR, BOULDER, CO; and S. Y. Hong

Handout (760.2 kB)

65

The influence of misrepresenting the nocturnal boundary layer on idealized convection in large-eddy simulation

Bart J.H. van Stratum, Max Planck Institute for Meteorology, Hamburg, Germany; and B. Stevens

Handout (1.1 MB)

66

An extension of Mellor-Yamada type model to Terra Incognita scale

Junshi Ito, MRI, Tsukuba, Ibaraki, Japan; and H. Niino, M. Nakanishi, and C. H. Moeng

67

Coupling a Mesoscale NWP model with Large-Eddy-Simulation CFD for realistic wind-plant aerodynamics simulations

Caroline Draxl, National Renewable Energy Laboratory, Golden, CO; and M. J. Churchfield, S. Lee, J. K. Lundquist, J. Michalakes, J. D. Mirocha, P. J. Moriarty, A. Purkayastha, M. A. Sprague, and B. J. Vanderwende

68

Modelling the Stable Boundary Layer in Operational Weather Forecasting: Current Issues

John M. Edwards, Met Office, Exeter, United Kingdom; and A. Lock

Handout (650.0 kB)

69

Numerical simulations on micro-meteorological changes caused by the weir construction using WRF-LES

MISUN Kang, National Institute of Meteorological Research/Korea Meteorological Administration, Seogwipo-si, Jeju Province, Korea, Republic of (South); and J. Y. Byon, C. B. Cho, K. R. Kim, and B. C. Choi

70

Stochastic Parametrisation of the Boundary Layer Fluxes in Cold-air Outbreaks

Jan Chylik, University of East Anglia, Norwich, United Kingdom; and I. Renfrew

Handout (3.7 MB)

71

A Sensivity Analysis of the WRF Boundary Layer Parameterizations for the Tropical Conditions

Gilberto Fisch, Institute of Aeronautics and Space, São José dos Campos, São Paulo, Brazil; and A. F. G. D. Silva

72

Initialization of a boundary layer model with radiosonde observations for generating climatological low-level wind fields

Guillermo Jorge Berri, Servicio Meteorologico Nacional, Buenos Aires, Argentina; and G. V. Muller and G. Bertossa

Handout (321.5 kB)

73

Direct observations of the Cloud Radiative Forcing at Earth’s Surface over a coastal station in the south-west Peninsular India

Session 14A

Renewable Energy Applications: Observations and Mesoscale Modeling

Location: Queens Ballroom (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: Julie K. Lundquist, University of Colorado

8:00 AM

14A.1

The Low Level Jet and Wind Energy

Jeff Freedman, SUNY, Albany, NY; and K. Rojowsky, J. M. Wilczak, J. Schroeder, J. W. Zack, and S. Basu

8:15 AM

14A.2

Profiles of wind and Weibull distribution parameters in a coastal and marine boundary layer

Sven-Erik Gryning, DTU Wind Energy/Risø Campus, Roskilde, Denmark, Roskilde, Denmark; and E. Batchvarova, R. Floors, and A. Peña

8:30 AM

14A.3

The New Reference Facility for Offshore Renewable Energy (RFORE) and Applications to Problems of the Marine Atmospheric Boundary Layer

William J. Shaw, PNNL, Richland, WA; and A. Clifton and J. W. Cline

8:45 AM

14A.4

Assessment of NWP forecast model skill to represent Marine Boundary Layer features

Yelena Pichugina, CIRES/Univ. of Colorado, Boulder, CO; and R. M. Banta, W. A. Brewer, J. B. Olson, J. Carley, M. Marquis, J. Wilczak, I. V. Djalalova, and L. Bianco

9:00 AM

14A.5

Optimizing boundary layer physics perturbations in the COSMO-DE Ensemble towards renewable energies

Jonas von Schumann, Deutscher Wetterdienst, Offenbach, Germany; and R. Kohlhepp, A. Steiner, B. Ritter, and C. Koehler

9:15 AM

14A.6

On the Vertical Structure of Wind Gusts

Irene E. Suomi, Finnish Meteorological Institute, Helsinki, Finland; and T. Vihma, S. E. Gryning, and C. Fortelius

9:30 AM

14A.7

Boundary layer scaling of operational forecast data as a wind resource assessment tool for small and medium-scale wind turbines

Shemaiah Weekes, University of Leeds, Leeds, United Kingdom; and A. S. Tomlin, D. Allen, A. Skea, S. Vosper, and M. Gallani

9:45 AM

14A.8

WRF's wind power ensembles for a wind farm located in a coastal area of Turkey

Yasemin Ezber, Istanbul Technical University, Istanbul, Turkey; and T. Kaytanci and G. Kirkil

Manuscript (727.9 kB)

Session 14B

Parameterizations in Models at All Scales - 1: Turbulence Modelling and DNS

Location: John Charles Suite (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: Elie Bou-Zeid, Princeton University

8:15 AM

14B.1A

On the boundary layer structure over strong topography

Mathias W. Rotach, Institute of Meteorology and Geophysics, University of Innsbruck, Austria, Innsbruck, Austria; and I. Stiperski, A. Gohm, J. Wagner, and D. Leukauf

8:30 AM

14B.1

Experimental study of the SGS pressure-strain-rate correlation in the convective atmospheric surface layer

Khuong X. Nguyen, Clemson University, Clemson, SC; and C. Tong

8:45 AM

14B.2

An improved stochastic backscatter parameterisation for large-eddy simulation of the neutral boundary layer

James J. O'Neill, University of Birmingham, U.K., Birmingham, West Midlands, United Kingdom; and X. Cai and R. Kinnersley

9:00 AM

14B.3

Large-eddy simulation of the stable boundary layer: Revisiting GABLS with a linear algebraic subgrid-scale turbulence model

Rica Mae Enriquez, University of Cambridge, Cambridge, United Kingdom; and R. L. Street

Manuscript (716.4 kB)

Handout (2.7 MB)

9:15 AM

14B.4

Explicit algebraic turbulence models and their application to the atmospheric boundary layer

Werner M. J. Lazeroms, KTH Royal Institute of Technology, Stockholm, Sweden; and G. Brethouwer, S. Wallin, A. V. Johansson, and G. Svensson

9:30 AM

14B.5

Collapse of turbulence in stably stratified channel flow: a transient phenomenon

J.M.M. Donda, Eindhoven University of Technology, Eindhoven, Netherlands; and B. J. H. van de Wiel, I. G. S. van Hooijdonk, A. F. Moene, H. J. J. Jonker, G. J. F. van Heijst, and H. J. H. Clercx

9:45 AM

14B.6

Simulation of Turbulence in the Very Stable Boundary Layer

Cedrick Ansorge, Max-Planck-Institute for Meteorology, Hamburg, Germany; and J. P. Mellado

Coffee Break

Location: Ark Royal (Queens Hotel)

Session 15A

Renewable energy applications of boundary layer physics

Location: Queens Ballroom (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: Jeffrey D. Mirocha, LLNL

10:30 AM

15A.1

Wind dynamics over an heterogeneous forest edge: large-eddy simulation and in-situ experiment

Louis-Etienne Boudreault, DTU, Roskilde, Denmark; and S. Dupont, A. Bechmann, and E. Dellwik

10:45 AM

15A.2

Non-equilibrium winds/waves: Impact of wave-propagation direction and wave age on hub-height winds and turbulence

Edward (Ned) Garrett Patton, NCAR, Boulder, CO; and P. P. Sullivan, B. Kosovic, L. Mahrt, M. Zagar, J. Dudhia, and L. Gulstad

11:00 AM

15A.3

Scanning of wind turbine upwind conditions: numerical algorithm and first applications

Marc Calaf, University of Utah, Wind Energy and Turbulence Laboratory, Salt Lake City, UT; and V. Sharma, G. Cortina, and M. B. Parlange

11:15 AM

15A.4

The application of boundary layer climatology and urban wind power potential in smarter electricity networks

Keith M. Sunderland, Duiblin Institute of Technology, Dublin, Ireland; and G. Mills

Handout (5.6 MB)

11:30 AM

15A.5

A METHODOLOGY FOR MAPPING THE EXCESS ENERGY AVAILABLE TO BUILDING MOUNTED TURBINES THROUGH GUST TRACKING SOLUTIONS

Francis C. Emejeamara, University of Leeds, Leeds, West Yorkshire, United Kingdom; and A. S. Tomlin and J. T. Millward-Hopkins

11:45 AM

15A.6

The Development of Synthetic Wind Series Based on Gaussian and Non Gaussian Statistics

Thomas Woolmington, Dublin Institute of Technology, Dublin 8, Ireland; and K. Sunderland and J. Blackledge

Handout (1.9 MB)

Session 15B

Parameterizations in Models at All Scales - 2: Clouds and Convective Systems

Location: John Charles Suite (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: Harm J. J. Jonker, Delft University of Technology

10:30 AM

15B.1

Modelling Scalar Skewness in Cloudy Boundary Layers

Dmitrii Mironov, German Weather Service, Offenbach am Main, Germany; and E. Machulskaya, A. K. Naumann, A. Seifert, and J. P. Mellado

10:45 AM

15B.2

Simulating an Evolving Cloud-topped Boundary Layer during a Cold-Air Outbreak over the North Atlantic with SHOC (Simplified Higher-Order Closure)

Steven K. Krueger, University of Utah, Salt Lake City, UT; and A. T. Lesage, A. K. Kochanski, and P. A. Bogenschutz

11:00 AM

15B.3

The role of the mixing length in determining the size of convective storms in high resolution models

Carol E. Halliwell, Met Office UK, Reading, United Kingdom; and K. Hanley and H. Lean

11:15 AM

15B.4

Boundary-layer dynamics in extra-tropical cyclones

Robert John Beare, University of Exeter, Exeter, United Kingdom; and M. J. P. Cullen

11:30 AM

15B.5

The Impact of Boundary Layer Processes on the Rapid Intensification of Hurricane Wilma (2005)

Hao Jin, NRL, Monterey, CA; and Y. Jin, D. L. Zhang, and J. D. Doyle

Lunch Break

Location: Palm Court/Queens Grill (Queens Hotel)

Session 16A

Renewable Energy Applications: Observations and Simulations of Wind Farms

Location: Queens Ballroom (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: Yelena L. Pichugina, NOAA

1:30 PM

16A.1

Lidar observations of the variation of wind turbine wakes with inflow conditions in an onshore wind farm

Julie K. Lundquist, University of Colorado, Boulder, CO; and E. S. Takle, M. Boquet, B. Kosovic, M. E. Rhodes, D. A. Rajewski, R. K. Doorenbos, S. L. Irvin, M. Aitken, K. Friedrich, P. T. Quelet, J. Rana, C. St. Martin, B. J. Vanderwende, and R. Worsnop

1:45 PM

16A.2

Could crop roughness impact the wind resource at agriculturally productive wind farm sites?

Brian Joseph Vanderwende, Univ. of Colorado, Boulder, CO; and J. K. Lundquist

Handout (1.8 MB)

16A.3

Effects of a Terrestrial Wind Farm on Planetary Boundary Layer Meteorology

2:00 PM

16A.3A

Boundary layer impacts of wind farms under a temperature inversion

Jonathan S. Pennells, University of Leeds, Leeds, United Kingdom; and A. N. Ross and S. Vosper

2:15 PM

16A.4

Wake flow variability in a wind farm throughout a diurnal cycle

Ahmad Sharifi, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland; and F. Porté-Agel

2:30 PM

16A.5

LES study of a large wind farm within a diurnal ABL

Varun Sharma, Swiss Federal Institute of Technology Lausanne (EPFL), Lausanne, Switzerland; and M. Calaf and M. B. Parlange

2:45 PM

16A.6

Optimization of Wind Farm Performance Based on Yaw Angle Control

Majid Bastankhah, École polytechnique Fédérale de Lausanne (EPFL), Lausanne, Vaud, Switzerland; and F. Porté-Agel

Session 16B

Parameterizations in Models at All Scales - 3: Modelling the Stable Boundary Layer

Location: John Charles Suite (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: Eric Bazile, CNRM/CNRS

1:30 PM

16B.1

Intercomparison of nocturnal turbulence formulations in WRF model at a network of stations in southern Brazil

Adriano Battisti, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil; and F. D. Costa and O. C. Acevedo

1:45 PM

16B.2

Boundary layer parametrization in Environment Canada's NWP models: lessons learned from three GASS experiments

Ayrton Zadra, Environment Canada, Dorval, QC, Canada

2:00 PM

16B.3

High-resolution numerical simulations of wintertime atmospheric boundary layer processes in the Adige Valley during an ALPNAP project field campaign

Elena Tomasi, University of Trento, Trento, Italy; and L. Giovannini, D. Zardi, and M. de Franceschi

2:15 PM

16B.4

Biases in Global Climate Models due to PBL Parameterization

Richard Davy, Nansen Environmental and Remote Sensing Center, Bergen, Hordaland, Norway; and I. Esau

2:30 PM

16B.5

Evaluation of the MYNN PBL Scheme Closure Constants for Low-Level Jet Events in a Stable Boundary Layer

David E. Jahn, Iowa State University, Ames, IA; and W. A. Gallus Jr. and E. S. Takle

Manuscript (502.7 kB)

2:45 PM

16B.6

Energy- and Flux-Budget (EFB) Turbulence-Closure Theory for Stably Stratified Geophysical Flows

Sergej Zilitinkevich, University of Helsinki, Helsinki, Finland; and T. Elperin, N. Kleeorin, I. Rogachevskii, and I. Esau

Coffee Break

Location: Ark Royal (Queens Hotel)

Session 17B

Parameterizations in Models at All Scales - 4: The Gray Zone

Location: John Charles Suite (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: Peter P. Sullivan, NCAR

3:30 PM

17B.1

Evaluation of a tensor eddy-diffusivity model for the terra incognita

Omduth Coceal, Univ. of Reading, Reading, UK; and M. J. Bopape and R. S. Plant

3:45 PM

17B.2

What is New in The Gray Zone ?

Rachel Honnert, Météo France, Toulouse, France; and V. Masson and F. Couvreux

4:00 PM

17B.3

Seamless turbulence parametrization across model resolutions

Adrian Lock, Met Office, Exeter, Devon, United Kingdom; and I. A. Boutle

4:15 PM

17B.4

Developing the Rapid Refresh and High Resolution Rapid Refresh Physics to Better Perform Across the Grey Zone

Joseph B. Olson, NOAA/CIRES, Boulder, CO; and J. Brown and G. Grell

Session 17A

Renewable Energy Applications: Observations and Simulations of Individual Turbine Wakes / Miscellaneous Boundary Layer Processes

Location: Queens Ballroom (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: William J. Shaw, PNNL

3:30 PM

17A.1

Observation of Wake and Upstream Turbulence of Individual Wind Energy Converters in a Wind Farm With Unmanned Aerial Vehicles (UAV)

Norman Wildmann, Eberhard-Karls-University Tübingen, Tübingen, Germany; and J. Bange

3:45 PM

17A.2

Utility-scale wind turbine wake characterization using nacelle-based long-range scanning lidar

Julie K. Lundquist, University of Colorado, Boulder, CO; and M. Aitken

4:00 PM

17A.3

Implementation of a Generalized Actuator Disk Wind Turbine Model into the Weather Research and Forecasting Model for Large-Eddy Simulation

Jeffrey D. Mirocha, LLNL, Livermore, CA; and B. Kosovic, M. L. Aitken, J. K. Lundquist, and N. Marjanovic

4:15 PM

17A.4

Influence of atmospheric stability on wind-turbine wakes: A large-eddy simulation study

Mahdi Abkar, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland; and F. Porté-Agel

4:30 PM

17A.5

Optimizing Lidar Scanning Strategies for Wind Energy Turbulence Measurements

Jennifer F. Newman, University of Oklahoma, Norman, OK; and T. A. Bonin, P. Klein, S. Wharton, and P. B. Chilson

Manuscript (4.9 MB)

4:45 PM

17A.6

Effects of Atmospheric Thermal Stability on Wind Turbine Wake recovery: Volumetric scans with three simultaneous Wind LiDARs

Giacomo Valerio Iungo, University of Texas Dallas, Richardson, TX; and F. Porté-Agel

5:00 PM

17A.7

Dissipation of turbulence in the wake of a wind turbine

Julie K. Lundquist, University of Colorado, Boulder, CO; and L. Bariteau

5:15 PM

17A.8

Large Eddy Simulation of Vertical Axis Wind Turbine Wakes

Sina Shamsoddin, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Vaud, Switzerland; and F. Porté-Agel

5:30 PM

17A.9

Simulating atmospheric boundary layer flow around a wing

Torsten Auerswald, University of Tübingen, Tübingen, Germany; and J. Bange

5:45 PM

17A.10

THE CHOICE OF PBL AND LAND SURFACE SCHEME FOR PREDICTING UK AIR QUALITY USING WRF-CMAQ

Nutthida Kitwiroon, King's College London, London, Greater London, United Kingdom; and S. Beevers

Session 18

Boundary Layer Processes - Large Eddy Simulation

Location: John Charles Suite (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: Arnold Moene, Wageningen University

4:30 PM

18.1

Large eddy simulations and reduced models of the unsteady atmospheric boundary layer

Elie Bou-Zeid, Princeton University, Princeton, NJ; and M. momen

4:45 PM

18.2

Towards large-eddy simulations of dust devils with observed intensity: Effects of surface heterogeneities and numerics

Maren Weismüller, University of Cologne, Cologne, Germany; and S. Raasch and F. Hoffmann

5:00 PM

18.3

Turbulent Scales in the Boundary Layer: A Year-long LES

Jerôme Schalkwijk, Delft University of Technology, Delft, Netherlands; and H. J. J. Jonker and A. P. Siebesma

Handout (1.8 MB)

5:15 PM

18.4

Very-large-scale motions in the neutral atmospheric boundary layer: a numerical study

Jiannong Fang, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland; and F. Porté-Agel

5:30 PM

18.5

An Intercomparison of LES Subgrid-Scale Models for Simulations of Slope Flows

M. Giometto, Lausanne, Switzerland; and J. Fang and M. B. Parlange

5:45 PM

18.6

The impact of atmospheric boundary layer flow on wildfire behavior

Mary Ann Jenkins, University of Utah, Toronto, ON, Canada; and A. Kochanski and S. K. Krueger

Session 19B

Boundary Layer Processes - the Surface Layer

Location: John Charles Suite (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: Philip S. Anderson, British Antarctic Survey

8:00 AM

19B.1

Optimized Measurement Techniques for Dual-Doppler Lidar Coherent Structure Detection in the Surface Layer

Christina Stawiarski, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany; and K. Träumner, C. Knigge, and C. Kottmeier

8:15 AM

19B.2

Priestley-Taylor Parameter Over Inland Water, Snow, and Ice: Bowen Ratio-Dependent Variations and Implications for Estimating the Latent Heat Flux

Xiaofeng Guo, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; and H. Liu and K. Yang

8:30 AM

19B.3

On the relevance of mesoscale transport for in-situ energy balance measurements and its partitioning between sensible and latent heat

Matthias Mauder, Karlsruhe Institute of Technology (KIT), Garmisch-Partenkirchen, Germany; and F. Eder, H. P. Schmid, R. L. Desjardins, T. Sachs, S. Metzger, J. Hartmann, D. Yakir, and E. Rothenberg

Handout (2.2 MB)

8:45 AM

19B.4

Turbulent Structures and Coherence in the Surface Layer as Observed by Dual Doppler Lidar

Katja Träumner, Karlsruhe Institute of Technology, Eggenstein-Leopoldshafen, Germany; and T. Damian, C. Stawiarski, and A. Wieser

9:00 AM

19B.5

Revisit Monin-Obukhov Similarity Theory and the Bulk Formula for Turbulence Parameterization

Jielun Sun, NCAR, Boulder, CO

9:15 AM

19B.6

Near the Surface Air Temperature Dynamics from Distributed Temperature Sensing

Matthias J. Zeeman, Karlsruhe Institute of Technology (KIT/IMK-IFU), Garmisch-Partenkirchen, Germany; and J. S. Selker and C. K. Thomas

9:30 AM

19B.7

A new relation between surface flux and mean vertical concentration profiles of heavy particles in the atmospheric surface layer

Livia Souza Freire Grion, The Pennsylvania State University, University Park, PA; and M. Chamecki and J. Gillies

9:45 AM

19B.8

COSMOS-UK: A New Observation Network for Near Real-time Soil Moisture and Land Surface Energy Fluxes

Jonathan G. Evans, Centre for Ecology and Hydrology, UK, Wallingford, United Kingdom; and H. C. Ward, J. R. Blake, R. Morrison, N. J. Hewitt, L. A. Ball, and M. Fry

Session 19A

Boundary Layer Clouds 1 - Stratocumulus

Location: Queens Ballroom (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: Adrian P. Lock, UK Met Office

8:30 AM

19A.1

Mixing at a stratocumulus cloud top driven by radiative and evaporative cooling

Alberto de Lozar, Max Planck Institute for Meteorology, Hamburg, Germany; and J. P. Mellado

8:45 AM

19A.2

The influence of Inversion Stability on Stratocumulus Cloud Thinning

Johan van der Dussen, Delft University of Technology, Delft, Netherlands; and S. R. de Roode and A. P. Siebesma

Handout (4.3 MB)

9:00 AM

19A.3

Wind shear and evaporative cooling at the stratocumulus top

Juan Pedro Mellado, Max Planck Institute for Meteorology, Hamburg, Germany; and B. Stevens and H. Schmidt

9:15 AM

19A.4

Radiatively driven in-cloud turbulence and cloud-surface coupling in Arctic Stratocumulus

Rebecca A. Jansen, University of Leeds, Leeds, United Kingdom; and I. M. Brooks, M. Shupe, J. Sedlar, M. Tjernström, P. O. G. Persson, and J. S. Dobbie

9:30 AM

19A.5

A mixed-layer model study of the stratocumulus response to changes in large-scale conditions

Stephan R. De Roode, Delft University of Technology, Delft, Netherlands; and A. P. Siebesma, S. Dal Gesso, H. J. J. Jonker, J. Schalkwijk, and J. Sival

9:45 AM

19A.6

Preferred Location of Droplet Collisions in Turbulent Flows

Vincent Emile Perrin, TU Delft, Delft, Netherlands; and H. J. J. Jonker

Coffee Break

Location: Ark Royal (Queens Hotel)

Session 20A

Boundary Layer Clouds 2 - Cumulus

Location: Queens Ballroom (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: Stephan R. De Roode, Delft University of Technology

10:30 AM

20A.1

Shallow cumulus clouds rooted in photosynthesis

J. Vila-Guerau de Arellano, Wageningen University, Wageningen, Netherlands; and H. G. Ouwersloot, G. L. Horn, D. Baldocchi, and C. M. J. Jacobs

Handout (4.0 MB)

10:45 AM

20A.2

Quantifying and parameterizing the transport of sub-cloud layer moisture and reactants by shallow cumulus clouds over land

H.G. Ouwersloot, Max Planck Institute for Chemistry, Mainz, Germany; and B. J. H. van Stratum, J. Vilà-Guerau de Arellano, M. Sikma, M. C. Krol, and J. Lelieveld

11:00 AM

20A.3

Shallow Cumulus in the Southeastern U.S. Simulated by Various WRF configurations

Wayne M. Angevine, CIRES, University of Colorado, and NOAA/ESRL, Boulder, CO

11:15 AM

20A.4

Cloud-aerosol interactions in fields of organizing shallow cumulus

Thijs Heus, University of Cologne, Cologne, Germany; and A. Seifert

20A.5

Cold Pools and Boundary Layer Turbulent Fluxes under Precipitating Shallow Cumulus

20A.6

Shadow effects of shallow convective clouds on the atmospheric boundary layer and feedback on the cloud field

Session 20B

Boundary Layer Processes - small scale structures and Heterogeneity

Location: John Charles Suite (Queens Hotel)

Host: 21st Symposium on Boundary Layers and Turbulence

Chair: Shane D. Mayor, California State Univ.

20B.1

Structure parameters over heterogeneous terrain – a highresolution LES case study for the LITFASS2003 experiment

10:30 AM

20B.2

Airborne-Measured Spatially-Averaged Temperature and Moisture Turbulent Structure Parameters Over a Heterogeneous Surface

Andreas Platis, University of Tübingen, Tübingen, Germany; and D. Martinez and J. Bange

10:45 AM

20B.3

Classification of structures from atmospheric time series

Yanfei Kang, Monash University, Melbourne, Victoria, Australia; and D. Belusic and K. Smith-Miles

11:00 AM

20B.4

On the discrepancy in simultaneous observations of C_T^2 by scintillometers, sonics and unmanned aircraft during LITFASS-2009 and LITFASS-2010

Miranda Braam, Wageningen University and Research Centre, Wageningen, Netherlands; and F. Beyrich, A. F. Moene, J. Bange, A. Platis, S. Martin, and B. Maronga

Handout (811.7 kB)

11:15 AM

20B.5

Extracting of Bursting Fluctuations in the Time Series of Atmospheric Turbulence by the Statistical Analysis

Lei Liu, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; and F. Hu and X. L. Cheng

Conference Adjourns

Location: Palm Court/Queens Grill (Queens Hotel)

21st Symposium on Boundary Layers and Turbulence

Sunday, 8 June 2014

5:00 PM-7:00 PM: Sunday, 8 June 2014

Monday, 9 June 2014

7:30 AM-5:30 PM: Monday, 9 June 2014

8:45 AM-10:00 AM: Monday, 9 June 2014

10:00 AM-10:30 AM: Monday, 9 June 2014

10:30 AM-12:00 PM: Monday, 9 June 2014

12:00 PM-1:30 PM: Monday, 9 June 2014

1:30 PM-3:00 PM: Monday, 9 June 2014

3:00 PM-3:30 PM: Monday, 9 June 2014

3:30 PM-5:30 PM: Monday, 9 June 2014

5:30 PM-7:00 PM: Monday, 9 June 2014

Tuesday, 10 June 2014

8:00 AM-10:00 AM: Tuesday, 10 June 2014

8:30 AM-10:00 AM: Tuesday, 10 June 2014

10:00 AM-10:30 AM: Tuesday, 10 June 2014

10:30 AM-12:00 PM: Tuesday, 10 June 2014

12:00 PM-1:30 PM: Tuesday, 10 June 2014

1:30 PM-3:00 PM: Tuesday, 10 June 2014

3:00 PM-3:30 PM: Tuesday, 10 June 2014

3:30 PM-5:45 PM: Tuesday, 10 June 2014

3:30 PM-6:00 PM: Tuesday, 10 June 2014

Wednesday, 11 June 2014

8:30 AM-10:00 AM: Wednesday, 11 June 2014

10:00 AM-10:30 AM: Wednesday, 11 June 2014

10:30 AM-12:00 PM: Wednesday, 11 June 2014

12:00 PM-1:30 PM: Wednesday, 11 June 2014

1:30 PM-3:30 PM: Wednesday, 11 June 2014

2:30 PM-3:00 PM: Wednesday, 11 June 2014

3:00 PM-3:30 PM: Wednesday, 11 June 2014

3:30 PM-5:30 PM: Wednesday, 11 June 2014

5:30 PM-7:00 PM: Wednesday, 11 June 2014

Thursday, 12 June 2014

8:00 AM-10:00 AM: Thursday, 12 June 2014

8:15 AM-10:00 AM: Thursday, 12 June 2014

10:00 AM-10:30 AM: Thursday, 12 June 2014

10:30 AM-12:00 PM: Thursday, 12 June 2014

12:00 PM-1:30 PM: Thursday, 12 June 2014

1:30 PM-3:00 PM: Thursday, 12 June 2014

3:00 PM-3:30 PM: Thursday, 12 June 2014

3:30 PM-4:30 PM: Thursday, 12 June 2014

3:30 PM-6:00 PM: Thursday, 12 June 2014

4:30 PM-6:00 PM: Thursday, 12 June 2014

Friday, 13 June 2014

8:00 AM-10:00 AM: Friday, 13 June 2014

8:30 AM-10:00 AM: Friday, 13 June 2014

10:00 AM-10:30 AM: Friday, 13 June 2014

10:30 AM-12:00 PM: Friday, 13 June 2014

12:00 PM-1:30 PM: Friday, 13 June 2014

Sunday, 8 June 2014

5:00 PM-7:00 PM: Sunday, 8 June 2014

Monday, 9 June 2014

7:30 AM-5:30 PM: Monday, 9 June 2014

8:45 AM-10:00 AM: Monday, 9 June 2014

10:00 AM-10:30 AM: Monday, 9 June 2014

10:30 AM-12:00 PM: Monday, 9 June 2014

12:00 PM-1:30 PM: Monday, 9 June 2014

1:30 PM-3:00 PM: Monday, 9 June 2014

3:00 PM-3:30 PM: Monday, 9 June 2014

3:30 PM-5:30 PM: Monday, 9 June 2014

5:30 PM-7:00 PM: Monday, 9 June 2014

Tuesday, 10 June 2014

8:00 AM-10:00 AM: Tuesday, 10 June 2014

8:30 AM-10:00 AM: Tuesday, 10 June 2014

10:00 AM-10:30 AM: Tuesday, 10 June 2014

10:30 AM-12:00 PM: Tuesday, 10 June 2014

12:00 PM-1:30 PM: Tuesday, 10 June 2014

1:30 PM-3:00 PM: Tuesday, 10 June 2014

3:00 PM-3:30 PM: Tuesday, 10 June 2014

3:30 PM-5:45 PM: Tuesday, 10 June 2014

3:30 PM-6:00 PM: Tuesday, 10 June 2014

Wednesday, 11 June 2014

8:30 AM-10:00 AM: Wednesday, 11 June 2014

10:00 AM-10:30 AM: Wednesday, 11 June 2014

10:30 AM-12:00 PM: Wednesday, 11 June 2014

12:00 PM-1:30 PM: Wednesday, 11 June 2014

1:30 PM-3:30 PM: Wednesday, 11 June 2014

2:30 PM-3:00 PM: Wednesday, 11 June 2014

3:00 PM-3:30 PM: Wednesday, 11 June 2014