Program: 24th Conference on Agricultural and Forest Meteorology (Davis Meeting)

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Monday, 14 August 2000

5:00 PM-5:00 PM: Monday, 14 August 2000

Conference Registration (Freeborn Hall, located on the UC Davis Campus)

Tuesday, 15 August 2000

7:30 AM-7:30 AM: Tuesday, 15 August 2000

Conference Registration (Freeborn Hall, located on the UC Davis Campus)

9:00 AM-9:00 AM: Tuesday, 15 August 2000

Joint Conference Introduction

Organizer: Opening Address: Robert J. Serafin, AMS President-Elect and UCAR

9:15 AM-12:00 PM: Tuesday, 15 August 2000

Session 1

Evapotranspiration and the Energy Balance: Part 1

Host: 24th Conference on Agricultural and Forest Meteorology

Organizer: Kyaw Tha Paw U, University of California

9:15 AM

1.1

Interannual and seasonal variability of latent and sensible heat fluxes above a coastal Douglas-fir forest

E. R. Humphreys, University of British Columbia, Vancouver, BC, Canada; and T. A. Black, E. M. Jork, G. B. Drewitt, D. L. Spittlehouse, Z. Nesic, and M. A. Arain

9:30 AM

1.2

The quotidian cycle of evapotranspiration from saltcedar

A. Salim Bawazir, New Mexico State University, Las Cruces, NM; and L. W. Gay, T. W. Sammis, and J. P. King

9:45 AM

1.3

DRY BEAN EVAPOTRANSPIRATION RATES ESTIMATED BY PENMAN-MONTEITH EQUATION IN VENTILATED GREENHOUSE

Gilberto C. Sediyama, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil; and M. K. Kobayashi, R. L. Gomide, P. C. Magalhães, and F. O. Duraes

10:00 AM

1.4

The Dynamics of the Surface-Atmosphere Exchange During and After Snow Melt for Different Arctic Ecosystems: MAGS

Constance M. Brown-Mitic, University of Arizona, Tucson, AZ; and P. H. Schuepp, I. J. Macpherson, S. Ogunjemiyo, and N. Neumann

10:15 AM

1.5

Spatial and temporal variations of soil heat flux in a corn field

Jerry L. Hatfield, USDA-ARS, Ames, IA; and J. H. Prueger

10:30 AM

1.6

Transferred to paper 1.10 (time slot 11:45 am)

10:31 AM

1.7

Accuracy of reference evapotranspiration forecast

Pierpaolo Duce, CNR, Sassari, Italy; and R. L. Snyder and D. Spano

10:45 AM

1.8

Reference Crop Evapotranspiration and Climate Variability Study in a Mexican Irrigation District

Helene E. Unland, Mexican Institute of Water Technology, Jiutepec, Morelos, Mexico; and E. P. Pena

11:00 AM

1.9

Spatial relationships between Forest Canopies and Microclimate and Heat flows in a Patchy Mixed-conifer Forest

Siyan Ma, Michigan Technological University, Houghton, MI; and J. Chen and M. North

11:15 AM

1.10

Estimating net radiation absorbed by orchard and isolated tree

Antonio Roberto Pereira, Universidade de Sao Paulo, Piracicaba, Sao Paulo, Brazil; and L. R. Angelocci, N. A. Villa Nova, and P. C. Sentelhas

11:30 AM

1.3A

Morning Coffee Break

12:00 PM-1:30 PM: Tuesday, 15 August 2000

Lunch Break

1:30 PM-3:30 PM: Tuesday, 15 August 2000

Poster Session 1

Formal Viewing

Host: 24th Conference on Agricultural and Forest Meteorology

P1.1

Seasonal variation in the energy and water balances of an Ozark grassland

Thomas J. Sauer, USDA/ARS, Ames, IA; and P. A. Moore Jr., J. M. Ham, W. L. Bland, J. H. Prueger, and C. P. West

P1.2

Seasonal variations in the energy budget and CO₂ flux over a temperate deciduous forest

Tsutomu Watanabe, Forestry and Forest Products Research Institute, Tsukuba, Ibaraki, Japan; and K. Yamanoi, Y. Yasuda, Y. Ohtani, M. Okano, and Y. Mizoguchi

P1.3

Soil and bean crop reflectances in the semi-arid region of the Northeast Brazil

Tantravahi V. Ramana Rao, Universidade Federal da Paraíba, Campina Grande, Paraíba, Brazil; and J. Fideles Filho, J. Q. Nóbrega, and R. T. Dantas

P1.4

Spring frost in Northern Italy orchards: a project on previsions, monitoring and control

Federica Rossi, CNR, Bologna, Italy; and O. Facini, S. Loreti, T. Georgiadis, and F. Zinoni

P1.5

Water requirements of table grapes in an arid site

Bernardo B. da Silva, Federal University of Paraiba, Campina Grande, Paraiba, Brazil; and D. C. Slack, M. W. Kilby, and A. K. Hla

P1.6

Study of the impact of weather factors on the types and characteristics of fungi diseases affecting wheat crops

Zbigniew Szwejkowski, Warmia and Mazury Univ., Olsztyn, Poland; and T. Kurowski

P1.7

The Georgia Automated Environmental Monitoring Network

Gerrit Hoogenboom, Washington State University, WA

P1.8

The influence of different weather front types for light trapping of European Corn Borer (Ostrinia Nubilalis Hbn)

Janos Puskas, Berzsenyi College, Szombathely, Hungary; and L. Nowinszky and E. Nagy

P1.9

Long Term Experience With Quality Control Procedures Applied to Meteorological Data

D. W. Meek, USDA-ARS, Ames, IA; and J. L. Hatfield, K. J. Cole, R. J. Jaquis, and J. H. Prueger

P1.10

Frequency of Spring versus Autumn Precipitation in the Northern Corn Belt

Brenton S. Sharratt, USDA-ARS, Morris, MN

P1.11

A Comparison of Common Pan Evaporation to Reference Evapotranspiration Equations

Young-San Park, University of California, Davis, CA; and R. L. Snyder and M. Orang

P1.12

A new method for estimating hourly temperature and degree days

Carla Cesaraccio, University of Sassari, Sassari, Italy; and R. L. Snyder, D. Spano, and P. Duce

P1.13

Asymmetric diurnal cycles in forests and the calculation of heat sums

Brian E. Potter, USDA Forest Service, East Lansing, MI

P1.14

Climate Characterization Using Hourly Temperature and Humidity with ASOS and AWS data

Xiaomao Lin, University of Nebraska, Lincoln, NE; and K. G. Hubbard

P1.15

Climatic influences on dissolved nutrients in an agribusiness-dominated eutrophic estuary

Brent J. Thomas, Univ. of Delaware, Newark, DE; and L. Kalkstein and D. Miller

3:00 PM-3:30 PM: Tuesday, 15 August 2000

Coffee Break

3:30 PM-6:00 PM: Tuesday, 15 August 2000

Session 2

Evaporation and the Energy Balance: Part 2

Host: 24th Conference on Agricultural and Forest Meteorology

Organizer: Donatella Spano, University of Potenza

3:30 PM

2.1

Surface eddy flux, cospectral similarity, and energy budget closure

Ricardo K. Sakai, SUNY, Albany, NY; and D. R. Fitzjarrald Sr. and K. E. Moore

3:45 PM

2.2

Energy exchanges across a corn-soybean field in the Midwest

Jerry L. Hatfield, USDA-ARS, Ames, IA; and J. H. Prueger and Y. Ma

4:00 PM

2.3

Bowen ratio evaporation measurement in a montane grassland: data integrity and fluxes

Michael J. Savage Sr., University of Natal, Pietermaritzburg, South Africa; and C. S. Everson and B. R. Metelerkamp

4:15 PM

2.4

Annual Distribution of Energy Fluxes in a Tallgrass Prairie Related to Canopy Growth

George G. Burba, University of Nebraska, Lincoln, NE; and S. B. Verma

4:30 PM

2.5

Transferred to Paper 2.11 (time slot 5:45 p.m.)

4:31 PM

2.6

Comparing direct measurements of root-zone soil moisture in a forest with piezometric weighing lysimeter records

Alan G. Barr, Meteorological Service of Canada, Saskatoon, SK, Canada; and G. van der Kamp, R. Schmidt, and T. A. Black

4:45 PM

2.7

Combining evapo-transpiration measurements with xylem diameter changes

Sanna Sevanto, University of Helsinki, Helsinki, Finland; and T. Vesala, M. Perämäki, J. Pumpanen, and E. Nikinmaa

5:00 PM

2.8

Energy balance in a mango orchard in Northeast of Brazil

Bernardo B. da Silva, Federal University of Paraiba, Campina Grande, Paraiba, Brazil; and P. V. de Azevedo, P. M. de O. Lopes, V. de Paulo R. da Silva, J. E. Sobrinho, and A. H. de C. Teixeira

5:15 PM

2.9

Micrometeorology meets Tracer Hydrology in determining Forest Evapotranspiration

Lutz W. Jaeger, University of Freiburg, Freiburg, Germany; and S. Holzkamper

5:30 PM

2.10

Evapotranspiration of a mango orchard in a semiarid site of Northeast Brazil

Pedro V. de Azevedo, Federal University of Paraiba, Campina Grande, Paraiba, Brazil; and B. B. da Silva, V. de P. R. da Silva, L. H. Bassoi, and J. M. Soares

5:45 PM

2.11

Adaptation of conventional evapotranspiration models to estimate irrigated apple tree transpiration

Antonio R. Pereira, Universidade de Sao Paulo, Piracicaba, Sao Paulo, Brazil; and N. A. Villa Nova, L. R. Angelocci, and C. Valancogne

6:00 PM-6:00 PM: Tuesday, 15 August 2000

Sessions end for the day

6:00 PM-7:30 PM: Tuesday, 15 August 2000

Welcome Reception with Exhibits (Cash Bar)

Wednesday, 16 August 2000

8:00 AM-5:30 PM: Wednesday, 16 August 2000

Conference Registration continues through Friday

8:30 AM-12:00 PM: Wednesday, 16 August 2000

Session 3

Effects of weather and climate on agriculture and forestry

Host: 24th Conference on Agricultural and Forest Meteorology

Organizers: Richard L. Snyder, University of California; Jerry L. Hatfield, USDA/ARS

8:30 AM

3.1

Effects of nitrogen application and weather on corn as detected by micrometeorology and remote sensing techniques

E. Pattey, Agriculture and Agri-Food Canada, Ottawa, ON, Canada; and I. B. Strachan and J. Boisvert

8:45 AM

3.2

Environmental prediction: early detection of atmosphere-land use changes in Ontario, Canada

Heather Auld, MSC/EC, Downsview, ON, Canada; and D. C. MacIver

9:00 AM

3.3

Microclimatic factors affecting winter survival of gypsy moth eggs in Michigan

Jeffrey A. Andresen, Michigan State University, East Lansing, MI; and D. G. McCullough, L. S. Bauer, C. N. Koller, D. L. Miller, and C. W. Ramm

9:15 AM

3.4

Predicting Water-Use Efficiency Canopy at level under Climatic Change

Liu-Kang Xu, University of California, Davis, CA; and T. C. Hsiao

9:30 AM

3.5

The phenology of leaf emergence and expansion in a boreal aspen forest

Alan G. Barr, Meteorological Service of Canada, Saskatoon, SK, Canada; and T. A. Black, C. Hrynkiw, and P. Pacholek

9:45 AM

3.6

Development of weather-based products for agricultural and environmental applications

Gerrit Hoogenboom, University of Georgia, Griffin, GA; and G. A. Georgia and D. D. Gresham

10:00 AM

3.7

Analysis of Soil Temperature Change for Different Sowing Styles of Winter Wheat Over Winter

Chunqiang Li, Meteorological Institute of Hebei Province, Shijiazhuang, Hebei, China; and H. Li, D. Sun, G. Meng, L. Du, and J. He

10:15 AM

3.8

Defining agroclimatological factors influencing vulnerability to agricultural drought: a Nebraska case study

Olga V. Wilhelmi, NCAR, Boulder, CO; and K. G. Hubbard and D. A. Wilhite

10:30 AM

3.9

Climate influences on grapevine phenology, grape composition, and wine production and quality for Bordeaux, France

Gregory V. Jones, Southern Oregon University, Ashland, OR; and R. E. Davis

10:45 AM

3.10

Climatological characterization of wind and snowfall in Minnesota for assessing the impact of living snow fences

Martha D. Shulski, University of Minnesota, St. Paul, MN; and M. W. Seeley

11:00 AM

3.11

15-year height of pinus ponderosa is correlated with diurnal temperature variation during bud elongation

John N. Church, University of California, Davis, CA; and R. S. Criddle and L. D. Hansen

11:15 AM

3.12

Characterizing Namibian Rainfall for Agricultural Purposes

A. Louis du Pisani, Ministry of Agriculture, Water and Rural Development, Windhoek, Namibia

11:30 AM

3.6A

Morning Coffee Break

12:00 PM-1:30 PM: Wednesday, 16 August 2000

Lunch Break

1:30 PM-5:15 PM: Wednesday, 16 August 2000

Session 4

Theoretical and applied studies of interactions between the atmosphere and the land surface

Host: 24th Conference on Agricultural and Forest Meteorology

Organizers: Alan G. Barr, Meteorological Service of Canada; David R. Miller, University of Connecticut

1:30 PM

4.1

Investigation of Near-Surface Soil Freezing and Thawing in North America

Tingjun Zhang, CIRES/University of Colorado, Boulder, CO; and R. L. Armstrong and J. Smith

1:45 PM

4.2

Determining scalar fluxes over an old-growth forest using surface renewal

Donatella Spano, University of Basilicata, Potenza, Italy; and R. L. Snyder, P. Duce, K. T. Paw U, and M. Falk

2:00 PM

4.3

Recent Improvements to the Meyers Multi-layer Dry Deposition Model

Bart Brashers, NOAA, Research Triangle Park, NC; and Y. Wu and P. L. Finkelstein

2:15 PM

4.4

Variation of air temperature in a gully in Eastern Kansas during nocturnal periods

Jerry L. Hatfield, USDA-ARS, Ames, IA; and J. H. Prueger and L. Mahrt

2:30 PM

4.5

Spatially distributed hydrologic-biophysical modeling: applications in precision agriculture

Charles Rodgers, University of Wisconsin, Madison, WI; and J. Mecikalski, C. Molling, J. Norman, C. Kucharik, and C. Morgan

2:45 PM

4.6

Model calculated soil moisture or precipitation for yield modeling?

Seth E. Snell, University of New Mexico, Albuquerque, NM; and L. Scuderi, R. Kaufmann, and S. Gopal

3:00 PM

4.7

Improvement of the Canadian Land Surface Scheme (CLASS) under Stable Conditions

Aisheng Wu, MSC, Toronto, ON, Canada; and D. L. Verseghy

3:15 PM

4.8

Effects of a modified BATS on simulation of the diurnal cycle within a regional climate model

Loren D. White, Jackson State University, Jackson, MS

4.9

A new soil source of atmospheric sulfur dioxide

3:31 PM

4.10

A spectral analysis of biosphere-atmosphere trace gas flux densities and meteorological variables across hour to year time scales

Dennis Baldocchi, University of California, Berkeley, CA; and E. Falge and K. Wilson

3:45 PM

4.11

Observations on the role of treeline in controlling atmospheric circulations

Jason Beringer, University of Alaska, Fairbanks, AK; and F. S. Chapin III, I. McHugh, and N. J. Tapper

4:00 PM

4.12

Feedbacks between the atmospheric boundary layer and terrestrial ecosystems: implications for global-scale modelling

Peter Levy, Centre for Ecology and Hydrology, Penicuik, Midlothian, United Kingdom; and C. Huntingford

4:15 PM

4.13

Spectral Transfer of Velocity—Temperature Correlation for Inhomogeneous Turbulence for Atmosphere-Land Interaction

Sukaran Ram Patel, Universidade Federal da Paraíba, Campina Grande, Paraiba, Brazil

4:30 PM

4.14

Crop modeling in Namibia

Albert J. Calitz, Ministry of Agriculture, Water and Rural Development, Windhoek, Namibia; and A. L. du Pisani

4:45 PM

4.6A

Afternoon Coffee Break

3:00 PM-5:30 PM: Wednesday, 16 August 2000

Exhibit Hours

5:30 PM-5:30 PM: Wednesday, 16 August 2000

Sessions end for the day

Thursday, 17 August 2000

8:45 AM-11:15 AM: Thursday, 17 August 2000

Session 5

Canopy micrometeorology

Host: 24th Conference on Agricultural and Forest Meteorology

Organizer: John D. Wilson, University of Alberta

8:45 AM

5.1

Scale dependent features of turbulent eddies within and above a forest canopy derived from wavelet transform analysis

Anandakumar Karipot, University of Georgia, Griffin, GA; and M. Y. Leclerc

9:00 AM

5.2

The effect of scalar source distribution on eddy diffusivities and bulk transfer coefficients

Margi Bohm, Univ. of Canberra, Canberra, Australia; and M. R. Raupach and J. J. Finnigan

9:15 AM

5.3

Higher order turbulent statistics in plant canopies

Kyaw Tha Paw U, University of California, Davis, CA; and M. Falk, R. D. Pyles, R. H. Shaw, and T. King

9:30 AM

5.4

An EOF Analysis of the Structure of the Large-Eddy Motion in a Plant Canopy

John J. Finnigan, CSIRO, Canberra, Australia; and R. H. Shaw

9:45 AM

5.5

(Formerly Paper 5.6) Building a physical model of water transfer by rain splash in a 3-D canopy structure

S. Saint-Jean, Institut National de la Recherche Agronomique, Thiverval-Grignon, France; and L. Huber and M. Chelle

10:00 AM

5.6

(formerly paper 5.5) Dispersive fluxes and canopy flows: Just how important are they?

Margi Bohm, Univ. of Canberra, Canberra, Australia; and J. J. Finnigan and M. R. Raupach

10:15 AM

5.7

A numerical simulation of airflow over and through a forest edge using large eddy simulation

Bai Yang, University of California, Davis, CA; and R. H. Shaw and K. T. Paw U

10:30 AM

5.8

Turbulent Fluxes of Momentum, Heat and Water Vapor in the Plant Canopy Derived from a k-epsilon Turbulence Closure Model

Thanh Ca Vu, Saitama University, Urawa, Saitama, Japan

10:45 AM

5.5A

Morning Coffee Break

9:00 AM-12:00 PM: Thursday, 17 August 2000

Exhibit Hours

11:15 AM-11:44 AM: Thursday, 17 August 2000

Session 6

Micrometeorological Instrumentation

Host: 24th Conference on Agricultural and Forest Meteorology

Organizer: Bertrand D. Tanner, Campbell Scientific, Inc.

11:15 AM

6.1

Evaluation of Air Temperature Measurements in Weather Stations

Kenneth G. Hubbard, Univ. of Nebraska, Lincoln, NE; and X. Lin

6.2

Potential of a mini-acoustic sounder in studying flow over forest canopy

11:31 AM

6.3

Random error in atmospheric flux measurements

Peter L. Finkelstein, NOAA and U.S. EPA, Research Triangle Park, NC

11:45 AM-1:30 PM: Thursday, 17 August 2000

Lunch Break

1:30 PM-1:30 PM: Thursday, 17 August 2000

Poster Session 2

Formal Viewing

Host: 24th Conference on Agricultural and Forest Meteorology

P2.1

Turbulent transport above a mixed Northern forest

P2.2

The influence of simple chemistry on scalar variance and vertical-flux budgets above and within a forest canopy

Edward G. Patton, Penn State Univ., University Park, PA; and K. J. Davis, M. C. Barth, and P. P. Sullivan

P2.3

Observed turbulent characteristics over a forest canopy using mini-SODAR

Thara V. Prabha, University of Georgia, Griffin, GA; and M. Y. Leclerc, M. Sanford, and E. Mursch-Radlgruber

P2.4

Monoterpene fluxes estimated using canopy models for a Pacific northwest old growth forest

Shelley Pressley, Washington State University, Pullman, WA; and B. K. Lamb, H. Westberg, D. Pyles, K. T. Paw U, and A. Guenther

P2.5

estimating soil heat flux density

Richard L. Snyder, University of California, Davis, CA; and K. T. Paw U and H. Wabeh

P2.6

Influences of stomatal response on the partitioning of the energy within the rice canopy

Hiroki Oue, Ehime University, Matsuyama, Japan

P2.7

Comparison of tracer emission rates calculated from three different techniques

Thomas K. Flesch, University of Alberta, Edmonton, AB, Canada; and J. H. Prueger and J. L. Hatfield

P2.8

Comparison of 3-D sonic anemometers

D.L. Spittlehouse, BC Ministry of Forests, Victoria, BC, Canada; and T. A. Black, B. Chen, E. R. Humphreys, and Z. Nesic

P2.9

A flux-variance based method to estimate vegetation-atmosphere exchanges under stable and unstable atmospheric conditions

Teodoro Georgiadis, CNR, Bologna, Italy; and F. Rossi and R. Sozzi

P2.10

Transport, air-surface exchange and landscape accumulation of airborne mercury deposited onto South Florida Everglades: A simulation study

I. X. Tsiros, U.S. EPA, Athens, GA and Univ. of Athens, Athens, Greece; and R. Ambrose

P2.11

Study on the characteristics of rice paddy water temperature and its relation to dew formation on leaves

Tsuneo Kuwagata, Tohoku National Agricultural Experiment Station, Morioka, Iwate, Japan; and T. Hamasaki and T. Watanabe

P2.12

Measuring Isotopic Carbon Dioxide Fluxes Using In Situ Tunable Diode Laser Absorption Spectroscopy

Steven D. Sargent, Campbell Scientific, Inc., Logan, UT; and B. D. Tanner

P2.13

Predicting Incoming Radiation from Long-Term Temperature and Sunshine Records in Britain

Sophie E. Hale, Forestry Commission Research Agency, Roslin, Midlothian, United Kingdom; and P. E. Levy

P2.14

Ecosystem evaporation, transpiration and sub-canopy vapor fluxes at the Morgan Monroe State Forest, Indiana

C. Susan B. Grimmond, Indiana University, Bloomington, IN; and P. J. Hanson, H. P. Schmid, S. D. Wullschleger, F. D. Cropley, H. B. Su, B. Offerle, and S. L. Scott

P2.15

A Preliminary intercomparison of micrometeorological and ecological estimates of carbon sequestration in a Mid-latitude Deciduous Forest for 1998 and 1999

J. L. Ehman, Indiana University, Bloomington, IN; and H. P. Schmid, C. S. B. Grimmond, J. C. Randolph, C. A. Wayson, P. J. Hanson, F. D. Cropley, H. B. Su, S. L. Scott, and B. Offerle

P2.16

The Effect of Elevated CO2 on Carbon and Water Vapor flux in Southern California Chaparral

Yufu Cheng, San Diego State Univ., San Diego, CA; and W. C. Oechel, S. J. Hastings, J. Major, P. Bryant, and J. Verfaillie

P2.17

Comparing CO2 and H2O Vapor Exchange at Two Alaskan Arctic Tundra Ecosystems Using Tower-Based Eddy Covariance

Hyojung Kwon, San Diego State Univ., San Diego, CA; and W. C. Oechel, R. C. Zulueta, and G. L. Vourlitis

P2.18

Preliminary landscape scale measurements of carbon and energy exchange in a Sarcocaulescent Desert Ecosystem

Rommel C. Zulueta, San Diego State Univ., San Diego, CA; and S. J. Hastings and W. C. Oechel

1:30 PM-3:30 PM: Thursday, 17 August 2000

Exhibit Hours

3:30 PM-4:00 PM: Thursday, 17 August 2000

Coffee Break

3:30 PM-5:15 PM: Thursday, 17 August 2000

Session 7

Canopy Micrometeorology - Observation

Host: 24th Conference on Agricultural and Forest Meteorology

Organizer: Monique Y. Leclerc, University of Georgia

3:30 PM

7.1

Comparison of TKE and Reynolds stress budgets between different forest canopy architectures

Michael J. Savage, University of Natal, Pietermaritzburg, South Africa; and M. Y. Leclerc, A. Karipot, and T. Prabha

3:45 PM

7.2

The microclimate of a 65 m tall, old-growth coniferous forest

Trevor Newton, University of California, Davis, CA and University of Washington, Seattle, WA; and K. T. Paw U, M. Falk, R. H. Shaw, T. King, T. C. Hsiao, R. D. Pyles, A. A. Matista, A. Sundquist, Y. S. Park, H. Wabeh, and J. Chen

4:00 PM

7.3

Field investigation of temperature patterns within Oklahoma peach orchards

J. D. Carlson, Oklahoma State University, Stillwater, OK; and B. D. McCraw

4:15 PM

7.4

Microclimate and Energy Balances of Three Douglas Fir Forests in Southern Washington

Jiquan Chen, Michigan Technological University, Houghton, MI; and K. T. Paw U, T. H. Suchanek, S. Ustin, R. Shaw, X. Wang, T. Hsiao, and M. Falk

4:30 PM

7.5

Variance, skewness and kurtosis characteristics within and just above a crop canopy

Adrie F. G. Jacobs, Wageningen University, Wageningen, Netherlands; and B. J. van de Wiel and A. A. M. Holtslag

4:45 PM

7.6

Contribution of higher order turbulent moments to the energy spectrum in an open pine canopy

Michael J. Savage, University of Natal, Pietermaritzburg, South Africa; and M. Y. Leclerc, T. Prabha, and A. Karipot

5:00 PM

7.7

Directional wind shear within an old-growth Douglas Fir forest: observed and modeled results

R. David Pyles, University of California, Davis, CA; and K. T. Paw U, B. C. Weare, and M. Falk

5:15 PM-5:15 PM: Thursday, 17 August 2000

Sessions end for the day

5:15 PM-6:00 PM: Thursday, 17 August 2000

Reception/Exhibits (Cash Bar)

6:00 PM-8:00 PM: Thursday, 17 August 2000

Conference Banquet (Freeborn Hall)

Organizer: Banquet Speaker: Terrance R. Nathan, University of California, Davis, CA, Presentation Title: "Meteorological Aspects of the Lewis & Clark Expedition"

Friday, 18 August 2000

8:30 AM-10:00 AM: Friday, 18 August 2000

Session 8

Modeling and measurement of meteorological processes related to agriculture and forestry

Host: 24th Conference on Agricultural and Forest Meteorology

Organizer: Larry Hipps, Utah State University

8:30 AM

8.1

The influence of a plant canopy on scalar statistics and structure within the planetary boundary layer

Edward G. Patton, Penn State University, University Park, PA and NCAR, Boulder, CO; and P. P. Sullivan and K. J. Davis

8:45 AM

8.2

Spatial and temporal footprint analysis for latent energy flux mapping

Daniel I. Cooper, LANL, Los Alamos, NM; and W. E. Eichinger, J. Archuleta, L. Hipps, J. Kao, M. Y. Leclerc, J. Prueger, and J. Reisner

9:00 AM

8.3

Footprint Determination in Stable to Convective Stratification Using an Inverse 3D Lagrangian Particle Model

Natascha Kljun, ETH, Zurich, Switzerland; and P. de Haan, M. W. Rotach, and H. P. Schmid

9:15 AM

8.4

Regional surface fluxes from a coupled mesoscale atmosphere/vegetative canopy model

Bryan C. Weare, University of California, Davis, CA; and R. D. Pyles, K. T. Paw U, and W. I. Gustafson Jr.

9:30 AM

8.5

Developments in a land surface scheme used for regional climate simulations in SWECLIM

Patrick Samuelsson, Stockholm University, Stockholm, Sweden; and B. Bringfelt and S. Gollvik

9:45 AM

8.6

Development of A Multilayer Biochemical Dry Deposition model

Yihua Wu, U.S. EPA, Research Triangle Park, NC; and B. Brashers, J. Pleim, and P. L. Finkelstein

9:30 AM-1:30 PM: Friday, 18 August 2000

Exhibit Hours

10:00 AM-10:30 AM: Friday, 18 August 2000

Coffee Break

10:30 AM-12:00 PM: Friday, 18 August 2000

Session 9

CARBON DIOXIDE EXCHANGE: PART 1

Host: 24th Conference on Agricultural and Forest Meteorology

Organizer: Dennis Baldocchi, University of California

10:30 AM

9.1

Variability of Energy Vapor and CO2 Exchange over two Midwestern Deciduous Forests

H. P. Schmid, Indiana University, Bloomington, IN; and C. S. B. Grimmond, F. Cropley, H. B. Su, C. S. Vogel, and P. S. Curtis

10:45 AM

9.2

The effect of drought on carbon exchange in a deciduous forest

Kell Wilson, NOAA/ATDD, Oak Ridge, TN; and D. Baldocchi and P. Hanson

11:00 AM

9.3

The contribution of soil fluxes to the total canopy energy and carbon flux of maize

Tilden P. Meyers, NOAA/ARL/ATDD, Oak Ridge, TN; and S. E. Hollinger

11:15 AM

9.4

Net CO2 flux in a tallgrass prairie along a 230 to 550 ppm MOL MOL-1 CO2 gradient

P. C. Mielnick, Agricultural Experiment Station, Tempe, TX; and W. A. Dugas, H. B. Johnson, H. W. Polley, and J. Sanabria

11:30 AM

9.5

Carbon dioxide and water vapor fluxes above two boreal forests

M. A. Arain, University of British Columbia, Vancouver, BC, Canada; and T. A. Black, A. G. Barr, P. G. Jarvis, J. M. Massheder, and D. L. Verseghy

11:45 AM

9.6

Modelling water, carbon and nitrogen dynamics of the boreal forests in Canadian Land Surface Scheme (CLASS)

Shusen Wang, University of Alberta, Edmonton, AB, Canada; and R. F. Grant, A. Black, and D. Verseghy

12:00 PM-1:30 PM: Friday, 18 August 2000

Lunch Break

1:30 PM-3:00 PM: Friday, 18 August 2000

Session 10

Diffusion, Dispersion and Transport of Airborne Material

Host: 24th Conference on Agricultural and Forest Meteorology

Organizer: Eugene S. Takle, Iowa State University

1:30 PM

10.1

Air Atmospheric Stability Effects on Spray Drift

David R. Miller, University of Connecticut, Storrs, CT; and T. E. Stoughton, W. E. Steinke, E. W. Huddleston, and J. B. Ross

1:45 PM

10.2

Integrating spore dispersal and models of turbulence

Donald E. Aylor, Connecticut Agricultural Experiment Station, New Haven, CT; and R. H. Shaw

2:00 PM

10.3

Simulation of Ozone in the Great Lakes Region

Jerome D. Fast, PNNL, Richland, WA; and W. E. Heilman

2:15 PM

10.4

PB-Piedmont: A Numerical Model for Predicting the Movement of Biological Material near the Ground at Night

Gary L. Achtemeier, USDA Forest Service, Athens, GA

2:30 PM

10.5

Estimates of Long Range Drift from an Orchard Sprayer

David R. Miller, University of Connecticut, Storrs, CT; and R. M. Cionco

2:45 PM

10.6

Dispersion Modeling of Atmospheric Compounds across a Valley in Southern Utah

Ronald M. Cionco, U.S. Army Research Laboratory, White Sands Missile Range, NM; and J. H. Prueger, J. L. Hatfield, and L. E. Hipps

3:00 PM-3:30 PM: Friday, 18 August 2000

Coffee Break

3:00 PM-6:00 PM: Friday, 18 August 2000

Exhibit Hours

3:30 PM-5:30 PM: Friday, 18 August 2000

Session 11

Contributions to Experimental and Theoretical Studies in Agricultural and Forest Meteorology

Host: 24th Conference on Agricultural and Forest Meteorology

Organizer: Kenneth M. King, University of Guelph

3:30 PM

11.1

Introductory Remarks

Kenneth M. King, University of Guelph, Guelph, Ontario, Canada

3:45 PM

11.2

Canopy element influences on subgrid-scale energy within a large-eddy simulation

Roger H. Shaw, University of California, Davis, CA; and E. G. Patton

4:00 PM

11.3

On the effects of fast chemical reactions on the vertical fluxes of NO and NO2 in the atmospheric surface layer

M. L. Wesely, ANL, Argonne, IL; and V. R. Kotamarthi and Y. Xu

4:15 PM

11.4

Mini-Sodar Detection of Local Circulations in a Managed Pine Plantation

Monique Y. Leclerc, University of Georgia, Griffin, GA; and T. Prabha, E. Mursch-Radlgruber, and A. Karipot

4:30 PM

11.5

The development of a tunable diode laser trace gas analyzer and its application to the measurement of trace gas fluxes using micrometeorological techniques

G. C. Edwards, University of Guelph, Guelph, ON, Canada; and G. W. Thurtell, G. E. Kidd, G. M. Dias, G. den Hartog, H. H. Neumann, I. J. Simpson, M. Lin, C. Wagner-Riddle, J. S. Warland, K. King, and R. Sweetman

4:45 PM

11.6

Recent changes in the growth rate of tropospheric methane

Isobel J. Simpson, University of California, Irvine, CA; and T. Y. Chen, D. R. Blake, and F. S. Rowland

5:00 PM

11.7

Interannual vegetable yield variability in Ontario: is climate a factor?

Alan W. McKeown, University of Guelph, Guelph, ON, Canada; and J. S. Warland and M. R. McDonald

5:15 PM

11.8

Comparison of Methods to Infer Gas Fluxes off a Lagoon

John D. Wilson, University of Alberta, Edmonton, AB, Canada; and T. K. Flesch and L. A. Harper

5:30 PM-5:30 PM: Friday, 18 August 2000

Sessions end for the day

Saturday, 19 August 2000

8:30 AM-10:00 AM: Saturday, 19 August 2000

Session 12

Carbon Dioxide Exchange: Part 2

Host: 24th Conference on Agricultural and Forest Meteorology

Organizer: H. P. Schmid, Indiana University

8:30 AM

12.1

Pressure pumping of carbon dioxide from soil

Eugene S. Takle, Iowa State University, Ames, IA; and J. R. Brandle, R. A. Schmidt, R. Garcia, I. V. Litvina, G. Doyle, X. Zhou, Q. Hou, C. W. Rice, and W. J. Massman

8:45 AM

12.2

Nighttime CO2 exchange in a tallgrass prairie and a winter wheat field

Andrew E. Suyker, University of Nebraska, Lincoln, NE; and S. B. Verma

9:00 AM

12.3

Greenhouse gas fluxes at Arctic tundra Ecosystem in winter and thawing period

Yoshinobu Harazono, National Institute of Agro Environmental Sciences, Tsukuba, Ibaraki, Japan; and A. Miyata, N. Ota, and W. C. Oechel

9:15 AM

12.4

Long Term Carbon Flux Measurements in the Understory of an Old-growth Temperate Rainforest

Matthias Falk, University of California, Davis, CA; and K. T. Paw U and T. S. King

9:30 AM

12.5

Impacts of clouds on ecosystem carbon dioxide exchange over a spectrum of climates

Lianhong Gu, University of California, Berkeley, CA; and D. D. Baldocchi and E. Falge

9:45 AM

12.6

A comparison of the carbon and water vapor exchange contributions of mean advection, eddy-covariance, and storage in a tall forest

Matthias B. Falk, University of California, Davis, CA; and Y. S. Park, K. T. Paw U, R. D. Pyles, T. C. Hsiao, R. H. Shaw, T. S. King, A. A. Matista, and H. Wabeh