20th Conference on Middle Atmosphere

Program Chairs: Amy H. Butler , NOAA Earth System Research Laboratory ; Sean M. Davis , NOAA/ESRL

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Sunday, 6 January 2019

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8:30 AM-9:00 AM: Sunday, 6 January 2019


Meet President Roger M. Wakimoto and Presidential Forum Speakers
Location: North Ballroom Prefunction (Phoenix Convention Center - West and North Buildings)

2:30 PM-3:30 PM: Sunday, 6 January 2019


Newcomer's Welcome and Information Exchange
Location: North 127ABC (Phoenix Convention Center - West and North Buildings)

4:00 PM-5:00 PM: Sunday, 6 January 2019


Plenary Session
Presidential Forum: Building Resilience to Extreme Political Weather: Advice for Unpredictable Times
Location: North Ballroom 120CD (Phoenix Convention Center - West and North Buildings)
Hosts: (Joint between the Presidential Forum and Annual Meeting Welcome; the Seventh Symposium on the Madden-Julian Oscillation and Sub-Seasonal Monsoon Variability; the 16th Conference on Space Weather; the 17th History Symposium; the 20th Conference on Middle Atmosphere; the 22nd Atmospheric Science Librarians International Conference; the 24th Conference on Applied Climatology; the 28th Symposium on Education; the 35th Conference on Environmental Information Processing Technologies; the 23rd Conference on Integrated Observing and Assimilation Systems for the Atmosphere, Oceans, and Land Surface (IOAS-AOLS); the 17th Symposium on the Coastal Environment; the 10th Conference on Weather, Climate, and the New Energy Economy; the Ninth Symposium on Advances in Modeling and Analysis Using Python; the Seventh Symposium on Building a Weather-Ready Nation; the Fifth Symposium on High Performance Computing for Weather, Water, and Climate; the Phased Array Radar Symposium; the Special Symposium on Meteorological Observations and Instrumentation; the Ninth Conference on the Meteorological Application of Lightning Data; the Ninth Symposium on Lidar Atmospheric Applications; the 10th Conference on Environment and Health; the 18th Conference on Artificial and Computational Intelligence and its Applications to the Environmental Sciences; the 19th Conference on Aviation, Range, and Aerospace Meteorology; the 32nd Conference on Climate Variability and Change; the 33rd Conference on Hydrology; the Richard Anthes Symposium; the Special Symposium on Mesoscale Meteorological Extremes: Understanding, Prediction, and Projection; the Second Conference on Earth Observing SmallSats; the Seventh AMS Symposium on the Joint Center for Satellite Data Assimilation; the Ninth Conference on Transition of Research to Operations; the Seventh Symposium on the Weather, Water, and Climate Enterprise; the 11th Symposium on Aerosol–Cloud–Climate Interactions; the 14th Symposium on Societal Applications: Policy, Research and Practice; the 21st Conference on Atmospheric Chemistry; the Fourth Symposium on US-International Partnerships; and the Events )
Moderator: Michael Henry, American Institute of Physics
Presider: Roger Wakimoto, Univ. of California, Los Angeles
Speakers: Dan Kahan, American Institute of Physics; David Goldston, MIT
4:00 PM
Presidential Forum: Building Resilience to Extreme Political Weather: Advice for Unpredictable Times

4:00 PM-6:30 PM: Sunday, 6 January 2019


Presidential Forum and Annual Meeting Welcome
Location: North Ballroom 120CD (Phoenix Convention Center - West and North Buildings)

5:00 PM-6:00 PM: Sunday, 6 January 2019


Plenary Session
Annual Meeting Welcome
Location: North Ballroom 120CD (Phoenix Convention Center - West and North Buildings)
Hosts: (Joint between the Presidential Forum and Annual Meeting Welcome; the Fourth Symposium on US-International Partnerships; the Ninth Conference on the Meteorological Application of Lightning Data; the 16th Conference on Space Weather; the 17th History Symposium; the 20th Conference on Middle Atmosphere; the 22nd Atmospheric Science Librarians International Conference; the 24th Conference on Applied Climatology; the 28th Symposium on Education; the Ninth Symposium on Lidar Atmospheric Applications; the 21st Conference on Atmospheric Chemistry; the 14th Symposium on Societal Applications: Policy, Research and Practice; the 11th Symposium on Aerosol–Cloud–Climate Interactions; the Seventh Symposium on the Weather, Water, and Climate Enterprise; the Ninth Conference on Transition of Research to Operations; the Seventh AMS Symposium on the Joint Center for Satellite Data Assimilation; the Second Conference on Earth Observing SmallSats; the Special Symposium on Mesoscale Meteorological Extremes: Understanding, Prediction, and Projection; and the Events )
Moderator: Roger Wakimoto, Univ. of California, Los Angeles

6:30 PM-7:30 PM: Sunday, 6 January 2019


Welcome Reception Honoring Newly Elected Fellows and Featured Award Winners
Location: North Ballroom (Phoenix Convention Center - West and North Buildings)

8:00 PM-10:00 PM: Sunday, 6 January 2019


CoRioLis Reception
Location: Sheraton Hotel

8:30 PM-10:00 PM: Sunday, 6 January 2019


Colour of Weather Networking Reception
Location: Sheraton Hotel

Monday, 7 January 2019

Sunday | Monday | Tuesday | Wednesday | Thursday | top

7:30 AM-6:00 PM: Monday, 7 January 2019


AMS Information Desk (Monday)
Location: North 100 Level Prefunction (Phoenix Convention Center - West and North Buildings)

Quiet Room (Monday)
Location: West 206 (Phoenix Convention Center - West and North Buildings)

Registration (Monday)
Location: North Lower Level Prefunction (Phoenix Convention Center - West and North Buildings)

Speaker Ready Room (Monday)
Location: North 121A (Phoenix Convention Center - West and North Buildings)

8:30 AM-10:00 AM: Monday, 7 January 2019

Recording files available
Session 1
Transport and Mixing in the Upper Troposphere and Stratosphere—Part I
Location: West 212A (Phoenix Convention Center - West and North Buildings)
Host: 20th Conference on Middle Atmosphere
Cochairs: Eric A. Ray, CIRES; Rei Ueyama, NASA
8:30 AM
1.1
Overview of Large-Scale Transport in the Chemistry Climate Modeling Initiative (CCMI) Models (Invited Presentation)
Clara Orbe, NASA, New York, NY; and D. W. Waugh, H. Yang, and M. Abalos

8:45 AM
1.2
The Impact of Boreal Summer ENSO Events on Tropical Lower Stratospheric Ozone
Olga V. Tweedy, USRA/NASA Postdoctoral Program, Greenbelt, MD; and D. Waugh, W. J. Randel, M. Abalos, L. D. Oman, and D. E. Kinnison
Recorded Presentation

9:00 AM
1.3
Future Changes in Stratospheric Ozone Intrusions
Jordan Benjamin, MIT, Cambridge, MA; and A. H. Butler and J. R. Albers
Recorded Presentation

9:15 AM
1.4
Ozone Depleting Substances: Key Drivers of Past and Future BDC Trends
Marta Abalos, Univ. Complutense, Madrid, Spain; and L. Polvani and L. Wang
Recorded Presentation

9:30 AM
1.5
Modeling Clouds and Water Vapor in the Upper Tropical Troposphere
Mark R. Schoeberl, Science and Technology Corporation, Columbia, MD; and D. Barahona, H. B. Selkirk, E. J. Jensen, R. Ueyama, L. Pfister, A. E. Dessler, T. Wang, and H. Ye

9:45 AM
1.6
Impact of Convectively Detrained Ice Crystals on the Tropical Upper Troposphere and Lower Stratosphere
Rei Ueyama, NASA, Moffett Field, CA; and E. J. Jensen, L. Pfister, and M. R. Schoeberl
Recorded Presentation

9:00 AM-11:00 AM: Monday, 7 January 2019


Guest Coffee (Monday)
Location: Camelback A (Sheraton Hotel )

9:00 AM-7:30 PM: Monday, 7 January 2019


Poster Hall (Monday)
Location: Hall 4 (Phoenix Convention Center - West and North Buildings)

10:00 AM-10:30 AM: Monday, 7 January 2019


AM Coffee Break (Monday)
Location: Meeting room foyers (Phoenix Convention Center - West and North Buildings)

10:00 AM-6:00 PM: Monday, 7 January 2019


Member Services Desk (Monday)
Location: North Lower Level Prefunction (Phoenix Convention Center - West and North Buildings)

10:30 AM-11:00 AM: Monday, 7 January 2019

Recording files available
Session 2
Transport and Mixing in the Upper Troposphere and Stratosphere—Part II
Location: West 212A (Phoenix Convention Center - West and North Buildings)
Host: 20th Conference on Middle Atmosphere
Cochairs: Eric A. Ray, CIRES; Rei Ueyama, NASA
10:30 AM
2.1
The Influence of Convection on Upper Troposphere Lower Stratosphere Composition from Multiple Years of Trajectory-Matched Ground-Based Radar Observations and Satellite-Based Trace Gas Profiles
Cameron R. Homeyer, Univ. of Oklahoma, Norman, OK
Recorded Presentation

10:45 AM
2.2
Quantification of Mixing and Transport Associated with Midlatitude Cyclones and Convective Outflow as Seen in START-08 Aircraft Flight Data and UWNMS Simulations
Marcus L. Büker, Western Illinois Univ., Macomb, IL; and M. H. Hitchman, S. M. Rowe, and T. Wilmot
Recorded Presentation

11:00 AM-12:00 PM: Monday, 7 January 2019

Recording files available
Session 3
Impact of Deep Convection, Volcanic Eruptions, and Large Fires on Water Vapor, Aerosols, and Ozone in the Middle Atmosphere
Location: West 212A (Phoenix Convention Center - West and North Buildings)
Host: 20th Conference on Middle Atmosphere
Cochairs: Pengfei Yu, CIRES; Melody Avery, NASA
11:00 AM
3.1
Diagnosing Stratospheric Water Vapor Relationships to the Tropical Cold Point Tropopause (Invited Presentation)
William J. Randel, NCAR, Boulder, CO; and M. Park
Recorded Presentation

11:15 AM
3.2
Extreme Events in the 14 Year MLS Lower Stratospheric Water Vapor Record (Invited Presentation)
Michael J. Schwartz, JPL/California Institute of Technology, Pasadena, CA

11:30 AM
3.3
Is the Transport by Deep Convective Storms the Major Source of Stratospheric Water Vapor?
Pao K. Wang, Univ. of Wisconsin–Madison, Madison, WI
Recorded Presentation

12:00 PM-1:30 PM: Monday, 7 January 2019


Lunch Break (Monday)

12:45 PM-1:05 PM: Monday, 7 January 2019


Daily Weather Briefings (Monday)
Location: North 132ABC (Phoenix Convention Center - West and North Buildings)

2:00 PM-3:00 PM: Monday, 7 January 2019


How to Become a Better Presenter
Location: North 231C (Phoenix Convention Center - West and North Buildings)

2:00 PM-4:00 PM: Monday, 7 January 2019

Recording files available
Themed Joint Session 1
Role of the Stratosphere in Climate Variability, Change, and Prediction—Part I
Location: North 128AB (Phoenix Convention Center - West and North Buildings)
Hosts: (Joint between the 32nd Conference on Climate Variability and Change; and the 20th Conference on Middle Atmosphere )
Cochairs: Isla R. Simpson, NCAR; Andrea L. Lang, University at Albany, SUNY
2:00 PM
TJ1.1
The Role of the Stratosphere in Global Predictability across Time and Length Scales (Invited Presentation)
Daniela I. V. Domeisen, ETH, Zurich, Switzerland
Recorded Presentation

2:15 PM
TJ1.2
The Predictability of Northern Hemisphere Stratospheric Final Warmings and Their Surface Impacts
Amy Butler, CIRES, Boulder, CO; and J. P. Sjoberg, A. Charlton-Perez, and D. I. V. Domeisen
Recorded Presentation

2:30 PM
TJ1.3
Stratospheric and Tropical Impacts on Subseasonal Forecasts Related to Stratospheric Vortex Disruptions
John R. Albers, Univ. of Colorado Boulder, Boulder, CO; and M. Newman
Recorded Presentation

2:45 PM
TJ1.4
Attribution of NAO Predictability beyond Two Weeks
Lantao Sun, CIRES/Univ. of Colorado Boulder, Boulder, CO; and J. Perlwitz, J. H. Richter, and M. Hoerling
Recorded Presentation

3:00 PM
TJ1.5
Europe’s “Beast from the East” (February 2018): Predictability at Subseasonal Leads
Michael J. Ventrice, The Weather Company/IBM, Andover, MA
Recorded Presentation

3:15 PM
TJ1.6
Prediction of Northern Hemisphere Regional Surface Temperatures Using Stratospheric Ozone Information
Kane A. Stone, MIT, Cambridge, MA; and S. Solomon, D. E. Kinnison, C. F. Baggett, and E. A. Barnes
Recorded Presentation

3:30 PM
TJ1.7
Role of Tropical Lower Stratospheric Cooling on Recent Tropical Tropospheric Change
Kunihiko Kodera, MRI, Tsukuba, Japan; and N. Eguchi, R. Ueyama, Y. Kuroda, B. Funatsu, C. Kobayashi, and C. Claud
Recorded Presentation

3:45 PM
TJ1.8
Impacts of Stratospheric Ozone Recovery on Southern Ocean Surface Temperature
Feng Li, USRA, Greenbelt, MD; and P. A. Newman
Recorded Presentation

4:00 PM-6:00 PM: Monday, 7 January 2019


Formal Poster Viewing Reception
Location: Hall 4 (Phoenix Convention Center - West and North Buildings)

Poster Session
Poster Session Monday
Location: Hall 4 (Phoenix Convention Center - West and North Buildings)
Host: 20th Conference on Middle Atmosphere
164
Networked Ground-Based Pandora Observations of Enhanced Tropospheric Ozone Associated with Strong Midlatitude Cyclones
Joe Robinson, NASA, Greenbelt, MD; and A. Kotsakis, R. Swap, G. J. Labow, T. Knepp, V. S. Connors, M. Tzortziou, A. Reynolds, J. Herman, and J. Szykman

165
Stratospheric Overfolds and Underfolds Associated with Midlatitude Cyclones as Seen in START-08 Aircraft Flight Data and UWNMS Simulations

166
Understanding Enhanced Transport and Mixing of Arctic Ozone during SSW
Alvaro de la Camara, Complutense Univ. of Madrid, Madrid, Spain; and M. Abalos, P. Hitchcock, N. Calvo, and R. R. Garcia

167
Origin of the Upper-Tropospheric North American Monsoon Anticyclone
Leong Wai Siu, Texas A&M Univ., College Station, TX; and K. P. Bowman

168
The Evolution of TTL Cirrus Microphysics and Relative Humidity Downstream of Deep Convection

169
Increasing the Forest Fire and the Tropospheric Ozone Concentrations over Borneo Island Indonesia Based on 10 Years of Analysis Data
Furqon Alfahmi Sr., Bogor Agricultural Univ., Bogor, Indonesia; and A. W. Putra

170
Revisiting Stratospheric Aerosol Climatology for the Post-SAGEII Era Using Space-Based Measurements
Mahesh Kovilakam, NASA LRC, Hampton, VA; and L. Thomason

171
Pyrocb Smoke Rises and Persists in the Global Stratosphere: Constraints on Injected Smoke Mass, Black Carbon Abundance, and Ozone Reaction Rates with Organic Coatings
Pengfei Yu, CIRES, Boulder, CO; and O. B. Toon, C. G. Bardeen, Y. Zhu, R. W. Portmann, T. Thornberry, S. M. Davis, E. Wolf, K. H. Rosenlof, D. A. Peterson, M. D. Fromm, and A. Robock

Poster 172 has been moved to TJ13.2A.

173
The Stratosphere as a Key Uncertainty of the Hydrological Response to Global Warming
Ke Wei, IAP, Beijing, China

174
Assessing S2S Predictability: A Case Study of Tropospheric Precursors of the January 2009 Sudden Stratospheric Warming (SSW) Event.
Paul Panhans, Univ. at Albany, SUNY, Albany, NY; and A. A. Lang

175
Extratropical Atmospheric Predictability from the Quasi‐Biennial Oscillation in Subseasonal Forecast Models
Chaim I. Garfinkel, Hebrew Univ. of Jerusalem, Jerusalem, Israel; and C. Schwartz, D. I. V. Domeisen, S. W. Son, A. H. Butler, and I. White

175A
The Downward Influence of Sudden Stratospheric Warmings: Insight Using an Idealized Moist GCM
Ian White, Hebrew Univ. of Jerusalem, Jerusalem, Israel; and C. I. Garfinkel, E. P. Gerber, and M. Jucker

6:00 PM-8:00 PM: Monday, 7 January 2019


Exhibits Opening and Reception
Location: Hall 5-6 (Phoenix Convention Center - West and North Buildings)

Ribbon Cutting, Opening Reception, and Corporate Patron Recognition
Location: Hall 5-6 (Phoenix Convention Center - West and North Buildings)

Tuesday, 8 January 2019

Sunday | Monday | Tuesday | Wednesday | Thursday | top

7:30 AM-6:00 PM: Tuesday, 8 January 2019


AMS Information Desk (Tuesday)
Location: North 100 Level Prefunction (Phoenix Convention Center - West and North Buildings)

Member Services Desk (Tuesday)
Location: North Lower Level Prefunction (Phoenix Convention Center - West and North Buildings)

Quiet Room (Tuesday)
Location: West 206 (Phoenix Convention Center - West and North Buildings)

Registration (Tuesday)
Location: North Lower Level Prefunction (Phoenix Convention Center - West and North Buildings)

8:30 AM-10:00 AM: Tuesday, 8 January 2019

Recording files available
Themed Joint Session 4
Stratospheric Ozone, Chemistry, and Climate—Part I
Location: West 212A (Phoenix Convention Center - West and North Buildings)
Hosts: (Joint between the 20th Conference on Middle Atmosphere; the 32nd Conference on Climate Variability and Change; and the 21st Conference on Atmospheric Chemistry )
Cochairs: John S. Daniel, NOAA; Amy Butler, CIRES
TJ4.1
The 2018 UNEP/WMO Scientific Assessment of Ozone Depletion

8:30 AM
TJ4.1A
Global Stratospheric Ozone: Past, Present, and Future (Invited Presentation)
Jessica L. Neu, JPL, Pasadena, CA; and P. Braesicke and W. S. Chapter 3 Team
Recorded Presentation

9:00 AM
TJ4.2
Trends in Atmospheric Abundance and Inferred Emissions of Ozone-Depleting Substances (Invited Presentation)
Brad D. Hall, NOAA, Boulder, CO; and M. Rigby, A. Engel, R. Hossaini, M. Vollmer, R. P. Fernandez, and E. J. Hintsa
Recorded Presentation

9:15 AM
TJ4.3A
Fully Coupled Chemistry–Climate Model Simulations: Evaluation with Observations and Future Evolution of the Ozone Layer in a Changing Climate (Invited Presentation)
Martin Dameris, Institut fuer Physik der Atmosphäre, Wessling, Germany; and U. Langematz, M. B. Tully, and P. Jöckel
Recorded Presentation

9:45 AM
TJ4.4A
Ozone Change and Its Influence on Climate (Invited Presentation)
A. Yu. Karpechko, Finnish Meteorological Institute, Helsinki, Finland; and A. C. Maycock, M. Abalos, J. Arblaster, C. I. Garfinkel, H. Akiyoshi, K. H. Rosenlof, and M. Sigmond
Recorded Presentation

9:00 AM-11:00 AM: Tuesday, 8 January 2019


Guest Coffee (Tuesday)
Location: Hospitality Suite 428 (Sheraton Hotel )

9:00 AM-6:00 PM: Tuesday, 8 January 2019


Exhibit Hall (Tuesday)
Location: Hall 5-6 (Phoenix Convention Center - West and North Buildings)

Poster Hall (Tuesday)
Location: Hall 4 (Phoenix Convention Center - West and North Buildings)

10:00 AM-10:30 AM: Tuesday, 8 January 2019


AM Coffee Break (Tuesday)
Location: Hall 5-6 (Phoenix Convention Center - West and North Buildings)

Meet President Roger M. Wakimoto (Tuesday)
Location: Hall 5-6 (Phoenix Convention Center - West and North Buildings)

10:30 AM-12:00 PM: Tuesday, 8 January 2019

Recording files available
Themed Joint Session 6
Stratospheric Ozone, Chemistry, and Climate—Part II
Location: West 212A (Phoenix Convention Center - West and North Buildings)
Hosts: (Joint between the 20th Conference on Middle Atmosphere; and the 32nd Conference on Climate Variability and Change )
Cochairs: Paul A. Newman, NASA GSFC; Susan E. Strahan, NASA GSFC
10:30 AM
TJ6.1
Stratospheric Ozone–Induced Cloud Radiative Effects on Antarctic Sea Ice
Yongyun Hu, Peking Univ., Beijing, China; and Y. Xia, J. Liu, and Y. Huang
Recorded Presentation

10:45 AM
TJ6.2
Influence of Artic Stratospheric Ozone on Surface Climate in CCMI models
Chaim I. Garfinkel, Hebrew Univ. of Jerusalem, Jerusalem, Israel; and O. Harrari
Recorded Presentation

11:00 AM
TJ6.3
The Transient Impact of Ozone Depletion on the Southern Hemisphere Ocean: Sea Surface Temperature, Heat Content, and Carbon
William J. M. Seviour, The Johns Hopkins Univ., Baltimore, MD; and D. G. Ferreira, A. Gnanadesikan, Y. Kostov, J. Marshall, and D. W. Waugh
Recorded Presentation

11:15 AM
TJ6.4
The Importance of the Ozone Layer for the Response of the Climate System to Increased CO2 Concentrations
Lorenzo Polvani, Columbia Univ., New York, NY; and G. Chiodo

11:30 AM
TJ6.5A
Retrievals of Ozone Profiles over Greenland and Their Relationship to Sudden Stratospheric Warmings
Shima Bahramvash Shams, Washington State Univ., Pullman, WA; and V. Walden, A. H. Butler, J. W. Hannigan, D. D. Turner, and M. Palm

TJ6.5
The Impact of Continuing Emissions of CFC-11 on the Stratospheric Ozone Layer

11:45 AM
TJ6.6
Stratospheric Ozone Recovery in Light of the Slowdown in the Decline of CFC-11
Eric A. Ray, CIRES, Boulder, CO; and S. A. Montzka, R. W. Portmann, P. Yu, J. S. Daniel, and G. S. Dutton
Recorded Presentation

12:00 PM-1:30 PM: Tuesday, 8 January 2019


Lunch Break (Tuesday)

Women in Atmospheric Sciences Luncheon
Location: North Ballroom 120AB (Phoenix Convention Center - West and North Buildings)

12:45 PM-1:05 PM: Tuesday, 8 January 2019


Daily Weather Briefings (Tuesday)
Location: North 132ABC (Phoenix Convention Center - West and North Buildings)

1:30 PM-2:30 PM: Tuesday, 8 January 2019

Recording files available
Session 4
Stratospheric Ozone, Chemistry, and Climate—Part III
Location: West 212A (Phoenix Convention Center - West and North Buildings)
Host: 20th Conference on Middle Atmosphere
Cochairs: Jessica Neu, JPL; Karen H. Rosenlof, NOAA/ESRL
1:30 PM
4.1
On the Robustness of Recent Lower Stratospheric Ozone Trends in Specified Dynamics Model Simulations
Sean M. Davis, NOAA/ESRL, Boulder, CO; and N. A. Davis, K. H. Rosenlof, P. Yu, and R. W. Portmann
Recorded Presentation

1:45 PM
4.2
The Importance of Early Winter Antarctic Ozone Levels to Ozone Recovery Trends
Susan E. Strahan, NASA GSFC, Greenbelt, MD; and A. R. Douglass, M. R. Damon, and L. D. Oman
Recorded Presentation

2:00 PM
4.3
Water Vapor Increases after 2002 in the Stratosphere and Mesosphere Observed by SABER and MLS
Jia Yue, Hampton Univ., Hampton, VA; and J. M. Russell III, P. Rong, M. G. Mlynczak, Q. Gan, R. R. Garcia, D. L. Wu, and J. N. Lee
Recorded Presentation

4.4
Polar Stratospheric Cloud Climatology Based on CALIOP Measurements from 2006–2018

2:30 PM-3:00 PM: Tuesday, 8 January 2019


PM Coffee Break (Tuesday)
Location: Meeting room foyers (Phoenix Convention Center - West and North Buildings)

3:00 PM-4:00 PM: Tuesday, 8 January 2019

Recording files available
Themed Joint Session 13
Role of the Stratosphere in Climate Variability, Change, and Prediction—Part II
Location: West 212A (Phoenix Convention Center - West and North Buildings)
Hosts: (Joint between the 20th Conference on Middle Atmosphere; and the 32nd Conference on Climate Variability and Change )
Cochairs: John R. Albers, Univ. of Colorado Boulder; Kane A. Stone, MIT
Quantifying the Response of Tropospheric Circulations to Stratospheric Forcing Using a Green’s Function Approach

3:00 PM
TJ13.1A
Impact of Interactive Chemistry of Stratospheric Ozone on Surface Climate in Paleoclimate Simulations and Future Global Warming Projections
Shigeo Yoden, Kyoto Univ., Kyoto, Japan; and S. Noda, K. Kodera, Y. Adachi, M. Deushi, A. Kitoh, R. Mizuta, S. Murakami, and K. Yoshida
Recorded Presentation

3:15 PM
TJ13.2A
Northern Hemisphere continental warming following the 1991 Mt Pinatubo eruption: forced response or just natural variability?
Lorenzo Polvani, Columbia University, New York, NY; and A. Banerjee and A. Schmidt

Paper TJ13.2 has been moved to Poster 175A.

3:30 PM
TJ13.3
The Salience of Nonlinearities in the Boreal Winter Response to ENSO: Arctic Stratosphere and Europe
Israel Weinberger, Hebrew Univ. of Jerusalem, Jerusalem, Israel
Recorded Presentation

3:45 PM
TJ13.4
Separating and Quantifying the Distinct Impacts of El Niño and Stratospheric Sudden Warmings on North Atlantic and Eurasian Wintertime Climate
Jessica Oehrlein, Columbia Univ., New York, NY; and G. Chiodo and L. Polvani
Recorded Presentation

4:00 PM-6:00 PM: Tuesday, 8 January 2019


Book Talks @ Authors Corner (Tues)
Location: Hall 5-6 (Phoenix Convention Center - West and North Buildings)

Formal Poster Viewing Reception (Tues)
Location: Hall 4 (Phoenix Convention Center - West and North Buildings)

Poster Session
Poster Session Tuesday
Location: Hall 4 (Phoenix Convention Center - West and North Buildings)
Host: 20th Conference on Middle Atmosphere
535
Scenarios and Information for Policymakers from the Scientific Assessment of Ozone Depletion, 2018

536
Validation and Interannual Variability of Ozone at JPL Table Mountain Facility and Mauna Loa Observatory Using the Newly Reanalyzed NDACC Lidar Data Sets
Thierry Leblanc, JPL, Wrightwood, CA

537
Comparisons of Stratospheric Ozone Measurements from SAGE III-ISS and OMPS-LP
Steven N. Buckner, Hampton Univ., Hampton, VA; and L. E. Flynn, M. P. McCormick, J. Anderson, M. T. Hill, and D. S. Barnes

Poster 538 has been moved. New Paper Number is TJ6.5A

539
Trends in Lower Stratospheric Ozone from 1998–Present Based on Balloon-Borne In Situ Measurements
Dale Hurst, NOAA/ESRL, Boulder, CO; and B. Johnson, P. Cullis, S. M. Davis, K. H. Rosenlof, R. Querel, C. W. Sterling, E. Hall, and A. Jordan

540
Characterizing Error due to Non-Uniform Spatial and Temporal Sampling in the SWOOSH Merged Data Set and Implications for Understanding Long-Term Ozone and WV Variability
Ekaterina Lezine, Univ. of North Carolina at Chapel Hill, Chapel Hill, NC; and S. M. Davis, K. H. Rosenlof, and N. A. Davis

Poster 541 has moved. New Paper Number is TJ13.1A.

6:00 PM-7:00 PM: Tuesday, 8 January 2019


Sessions End / Recep & Exhibits Opening (Tuesday)

6:00 PM-10:00 PM: Tuesday, 8 January 2019


University Night Receptions

6:30 PM-8:30 PM: Tuesday, 8 January 2019


Inez Fung Dinner
Location: West 213AB (Phoenix Convention Center - West and North Buildings)

Wednesday, 9 January 2019

Sunday | Monday | Tuesday | Wednesday | Thursday | top

7:25 AM-6:00 PM: Wednesday, 9 January 2019


Quiet Room (Wednesday)
Location: West 206 (Phoenix Convention Center - West and North Buildings)

7:30 AM-6:00 PM: Wednesday, 9 January 2019


AMS Information Desk (Wed)
Location: North 100 Level Prefunction (Phoenix Convention Center - West and North Buildings)

Member Services Desk (Wed)
Location: North Lower Level Prefunction (Phoenix Convention Center - West and North Buildings)

Registration (Wed)
Location: North Lower Level Prefunction (Phoenix Convention Center - West and North Buildings)

Speaker Ready Room (Wed)
Location: North 121A (Phoenix Convention Center - West and North Buildings)

8:30 AM-10:00 AM: Wednesday, 9 January 2019

Recording files available
Session 5
Waves and Circulation: Connections across Scales—Part I
Location: West 212A (Phoenix Convention Center - West and North Buildings)
Host: 20th Conference on Middle Atmosphere
Cochairs: Aditi Sheshadri, Stanford Univ.; M. Joan Alexander, NorthWest Research Associates
8:30 AM
5.1
Secondary Gravity Wave Generation over Orographic Gravity Wave Hotspot Regions and Resulting Influences in the Mesosphere and Lower Thermosphere (Invited Presentation)
Katrina Bossert, Univ. of Alaska Fairbanks, Fairbanks, AK; and C. Heale and S. Vadas

8:45 AM
5.2
Evaluation of a New Orographic Gravity Wave Drag Scheme for the Community Earth System Model (CESM)
Julio T. Bacmeister, NCAR, Boulder, CO; and M. J. Alexander, L. Holt, and A. Hertzog
Recorded Presentation

9:00 AM
5.3
Satellite Estimates of Momentum Fluxes from High-Impact Gravity Wave Events in the Stratosphere and Their Effects on Circulation
Laura Holt, NorthWest Research Associates, Boulder, CO; and M. J. Alexander, N. Hindley, L. Coy, W. M. Putman, and L. Hoffmann
Recorded Presentation

9:15 AM
5.4
Regional to Global Evolution of Potential Vorticity Generated by Parameterized Mountain Wave Drag
Christopher G. Kruse, NCAR, Boulder, CO; and R. Smith
Recorded Presentation

9:30 AM
5.5
Vertical Variations of Stratospheric Equatorial Wave activity in Various Reanalysis Datasets
George N. Kiladis, ESRL, Boulder, CO; and J. R. Albers and J. Dias
Recorded Presentation

5.6
Estimating Scale-Dependent Temporal Variability

9:45 AM
5.6A
Solar Cycle Variations in Mesospheric Carbon Monoxide as Depicted by MLS and WACCM
Jae N. Lee, JCET, Baltimore, MD; and D. L. Wu and A. Ruzmaikin
Recorded Presentation

9:00 AM-11:00 AM: Wednesday, 9 January 2019


Guest Coffee (Wed)
Location: Hospitality Suite 428 (Sheraton Hotel )

9:00 AM-6:30 PM: Wednesday, 9 January 2019


Exhibit Hall (Wed)
Location: Hall 5-6 (Phoenix Convention Center - West and North Buildings)

Poster Hall (Wednesday)
Location: Hall 4 (Phoenix Convention Center - West and North Buildings)

9:30 AM-12:30 PM: Wednesday, 9 January 2019


Tree Planting Guest Volunteer Project

10:00 AM-10:30 AM: Wednesday, 9 January 2019


AM Coffee Break (Wed)
Location: Hall 5-6 (Phoenix Convention Center - West and North Buildings)

Meet President Roger M. Wakimoto (Wed)
Location: Hall 5-6 (Phoenix Convention Center - West and North Buildings)

10:30 AM-12:00 PM: Wednesday, 9 January 2019

Recording files available
Session 6
Waves and Circulation: Connections across Scales—Part II
Location: West 212A (Phoenix Convention Center - West and North Buildings)
Host: 20th Conference on Middle Atmosphere
Cochairs: Edwin P. Gerber, Courant Institute of Mathematical Sciences; Laura Holt, NorthWest Research Associates
10:30 AM
6.1
Is the Tropospheric Wave Activity Anomalous before Sudden Stratospheric Warmings? (Invited Presentation)
Alvaro de la Camara, Complutense Univ. of Madrid, Madrid, Spain; and T. Birner and J. R. Albers
Recorded Presentation

10:45 AM
6.2
The Tropopause Heat Flux prior to Two Northern Hemisphere SSWs in the High-Altitude Version of the Navy Global Environmental Model
Hannah E. Attard, NRL/National Research Council, Washington, DC; and J. McCormack, A. L. Lang, M. Flatau, K. Viner, and N. Barton
Recorded Presentation

11:00 AM
6.3
“The Vortex Ain’t Alright”: Diagnosing the Features of a Preconditioned Polar Vortex Prior to Sudden Stratospheric Warmings with Time Series Motifs
Zachary D. Lawrence, New Mexico Institute of Mining and Technology, Socorro, NM; and G. L. Manney

11:15 AM
6.4
Using Principal Oscillation Patterns to Characterize Troposphere–Stratosphere Interactions
Aditi Sheshadri, Stanford Univ., Palo Alto, CA; and R. A. Plumb, E. A. Lindgren, and D. I. V. Domeisen
Recorded Presentation

11:30 AM
6.5
Connections between the Stratosphere and Surface Weather Associated with the Stratospheric Sudden Warming in Early 2018
Steven Pawson, GMAO, Greenbelt, MD; and L. Coy and K. Wargan

11:45 AM
6.6
Stratospheric Polar Vortex Variability in the Northern Hemisphere: The Effects of Climate Change on Polar Vortex Trends and Future Projections
John Rogers, Portland State Univ., Portland, OR; and P. Loikith

12:00 PM-1:30 PM: Wednesday, 9 January 2019


Anthes Luncheon
Location: West 213AB (Phoenix Convention Center - West and North Buildings)

Lunch Break (Wed)

12:45 PM-1:05 PM: Wednesday, 9 January 2019


Daily Weather Briefings (Wed)
Location: North 132ABC (Phoenix Convention Center - West and North Buildings)

1:30 PM-2:30 PM: Wednesday, 9 January 2019


Robert E. Horton Lecture
Recording files available
Joint Session 1
Connections between Tropical Convection and the Stratosphere—Part I
Location: West 212A (Phoenix Convention Center - West and North Buildings)
Hosts: (Joint between the 20th Conference on Middle Atmosphere; and the Seventh Symposium on the Madden-Julian Oscillation and Sub-Seasonal Monsoon Variability )
Cochairs: Chaim I. Garfinkel, Hebrew Univ. of Jerusalem; Lon L. Hood, The Univ. of Arizona
1:30 PM
J1.1
Interannual and Intraseasonal Variations in Stratospheric Gravity Waves and Relationships to Tropical Convection (Invited Presentation)
M. Joan Alexander, NorthWest Research Associates, Boulder, CO; and C. Liu, J. Richter, J. T. Bacmeister, and A. Hertzog
Recorded Presentation

1:45 PM
J1.2
A Three-Dimensional Minimal Model of QBO-Like Oscillations in a Stratosphere–Troposphere Coupled System under a Radiative-Moist Convective Quasi-Equilibrium State
Shigeo Yoden, Kyoto Univ., Kyoto, Japan; and H. H. Bui and E. Nishimoto
Recorded Presentation

2:00 PM
J1.3
Impact of the QBO on Prediction and Predictability of the MJO Convection
Shuguang Wang, Columbia Univ., New York, NY; and M. K. Tippett, A. H. Sobel, Z. K. Martin, and F. Vitart

J1.4
QBO-MJO Coupling may be Mediated by the Tropopause Height Change (Invited Presentation)

2:15 PM
J1.4A
The Relationship between the Quasi-Biennial Oscillation and Various Modes of Tropical Convective Activity
Naoko Sakaeda, Univ. of Oklahoma, Norman, OK; and J. Dias and G. N. Kiladis
Recorded Presentation

Recording files available
Joint Session 4
Whole Atmosphere Coupling during Extreme Events. Part I
Location: North 227A-C (Phoenix Convention Center - West and North Buildings)
Hosts: (Joint between the 16th Conference on Space Weather; and the 20th Conference on Middle Atmosphere )
Chair: Larisa Goncharenko, Massachusetts Institute of Technology
1:30 PM
J4.1
Sudden Stratospheric Warming Formation in an Idealized GCM Using Three Types of Tropospheric Forcing
Erik Anders Lindgren, MIT, Cambridge, MA; and A. Sheshadri and R. A. Plumb
Recorded Presentation

1:45 PM
J4.2
Atmospheric Effects of Energetic Particle Precipitation after Sudden Stratospheric Warmings (Invited Presentation)
Cora E. Randall, Univ. of Colorado Boulder, Boulder, CO
Recorded Presentation

2:15 PM
J4.3
Comparison of Two Medium Energy Electron Datasets in WACCM (Invited Presentation)
Josh Pettit, Univ. of Colorado Boulder, Boulder, CO; and C. E. Randall, E. D. Peck, D. R. Marsh, X. Fang, and V. L. Harvey
Recorded Presentation

2:30 PM-3:00 PM: Wednesday, 9 January 2019


PM Coffee Break (Wed)
Location: Meeting room foyers (Phoenix Convention Center - West and North Buildings)

3:00 PM-4:00 PM: Wednesday, 9 January 2019

Recording files available
Joint Session 2
Connections between Tropical Convection and the Stratosphere—Part II
Location: West 212A (Phoenix Convention Center - West and North Buildings)
Hosts: (Joint between the 20th Conference on Middle Atmosphere; and the Seventh Symposium on the Madden-Julian Oscillation and Sub-Seasonal Monsoon Variability )
Cochairs: Malori Redman, The Univ. of Arizona; Shigeo Yoden, Kyoto Univ.
3:00 PM
J2.1
QBO–MJO Connections: Physical Mechanisms and Seasonality
Casey R Densmore, WHOI, Woods Hole, MA; and B. S. Barrett and E. R. Sanabia
Recorded Presentation

3:15 PM
J2.2
Modeling the MJO–QBO Relationship in a Reforecast Model
Zane K Martin, Columbia Univ., New York, NY; and S. Wang, F. Vitart, and A. H. Sobel
Recorded Presentation

3:30 PM
J2.3
Impact of Tropical Cyclone Activity Observed by the TCI (2015) and SHOUT Field Campaigns and Explained by Cloud-Resolving Model Simulations
Gregory J. Tripoli, Univ. of Wisconsin–Madison, Madison, WI; and W. E. Lewis
Recorded Presentation

3:45 PM
J2.4
On the 3D Structure and Formation of UTLS Jetlets Associated with Potential Vorticity Dipoles in Tropical Cyclones
Shellie M. Rowe, Univ. of Wisconsin–Madison, Madison, WI; and M. Hitchman
Recorded Presentation

Recording files available
Joint Session 5
Whole Atmosphere Coupling during Extreme Events. Part II
Location: North 227A-C (Phoenix Convention Center - West and North Buildings)
Hosts: (Joint between the 16th Conference on Space Weather; and the 20th Conference on Middle Atmosphere )
Chair: V. Lynn Harvey, Laboratory for Atmospheric and Space Physics, Univ. of Colorado Boulder
3:00 PM
J5.1
Whole Atmosphere Modeling of the Middle and Upper Atmosphere Variability during Sudden Stratospheric Warmings (Invited Presentation)
Nicholas Pedatella, NCAR, Boulder, CO; and H. L. Liu, D. R. Marsh, K. Raeder, J. Anderson, J. Chau, L. Goncharenko, and T. Siddiqui
Recorded Presentation

3:30 PM
J5.2
Toward Operational Prediction of Medium- and Small-Scale Traveling Ionospheric Disturbances Triggered by Tropospheric Weather: Results from an NRL Demonstration System
Stephen D. Eckermann, NRL, Washington, DC; and D. Broutman, H. Knight, K. A. Zawdie, J. D. Doyle, Q. Jiang, and J. Ma
Recorded Presentation

3:45 PM
J5.3
Forcing from Lower-Thermosphere and Ionospheric Dynamics during Extreme Events
Endawoke YIZENGAW, Boston College, Boston, MA
Recorded Presentation

4:00 PM-6:00 PM: Wednesday, 9 January 2019


Book Talks @ Authors Corner (Wed)
Location: Hall 5-6 (Phoenix Convention Center - West and North Buildings)

Formal Poster Viewing Reception (Wed)
Location: Hall 4 (Phoenix Convention Center - West and North Buildings)

Poster Session
Poster Session Wednesday
Location: Hall 4 (Phoenix Convention Center - West and North Buildings)
Host: 20th Conference on Middle Atmosphere
984
Rossby Wave Propagation into the Northern Hemisphere Stratosphere: The Role of Zonal Phase Speed
Daniela I. V. Domeisen, ETH, Zurich, Switzerland; and O. Martius and B. Jiménez-Esteve

Handout (690.5 kB)

985
The Role of Eddy–Eddy Interactions in Sudden Stratospheric Warming Formation
Erik Anders Lindgren, MIT, Cambridge, MA; and A. Sheshadri

910C
The Importance of Divergence and Vertical Extent of the Jet to the Growth Rates of Barotropic Instability in Realistic Mean Flows on a Sphere
Ofer Shamir, Hebrew Univ. of Jerusalem, Jerusalem, Israel; and N. Paldor and C. I. Garfinkel

987
Long-Term Ozone Variability and Trends from Reanalyses: Can It Be Done?
Krzysztof Wargan, Science Systems and Applications, Inc., Greenbelt, MD; and C. Orbe, N. Kramarova, and S. Pawson

910A
Extratropical Stratospheric Predictability from the MJO and ENSO in the S2S Models
Chaim I. Garfinkel, Hebrew Univ. of Jerusalem, Jerusalem, Israel; and C. Schwartz

990
Horizontal Winds, Potential Vorticity, and Stratopause Characteristics from a Mesospheric and Upper Stratospheric Unified Dataset
Luis F. Millan, JPL, Pasadena, CA; and M. Schwartz, G. L. Manney, and N. J. Livesey

Poster 991 has been moved. New paper number is 5.6A.

992
Summary and Highlights of the SPARC-Reanalysis Intercomparison Project
Masatomo Fujiwara, Hokkaido Univ., Sapporo, Japan; and G. L. Manney, L. J. Gray, J. Wright, J. Anstey, T. Birner, S. M. Davis, R. Dragani, E. P. Gerber, Y. Harada, V. L. Harvey, M. I. Hegglin, C. R. Homeyer, J. A. Knox, K. Krueger, A. Lambert, C. S. Long, B. Monge-Sanz, M. L. Santee, S. Tegtmeier, and K. Wargan

993
Earth Global Reference Atmospheric Model (GRAM) Overview and Comparison to Modern-Era Retrospective Analysis for Research and Applications, Version 2 (MERRA-2)
Patrick W. White, NASA MSFC, Huntsville, AL; and B. O. Johnson

994
Advances in Spaceborne Observations of the Middle Atmosphere with the Microwave Limb Sounding Technique
Nathaniel Livesey, JPL, Pasadena, CA; and M. L. Santee, W. G. Read, A. Lambert, G. Chattopadhyay, J. Kooi, R. Stachnik, A. J. Tang, and R. Jarnot

How Well Do Stratospheric Reanalyses Reproduce High-Resolution Satellite Temperature Measurements?

5:30 PM-6:30 PM: Wednesday, 9 January 2019


Awards Banquet Reception
Location: Hall 5-6 (Phoenix Convention Center - West and North Buildings)

7:00 PM-10:00 PM: Wednesday, 9 January 2019


99th AMS Awards Banquet
Location: North Ballroom (Phoenix Convention Center - West and North Buildings)

Thursday, 10 January 2019

Sunday | Monday | Tuesday | Wednesday | Thursday | top

7:30 AM-3:00 PM: Thursday, 10 January 2019


AMS Information Desk (Thurs)
Location: North 100 Level Prefunction (Phoenix Convention Center - West and North Buildings)

Member Services Desk (Thurs)
Location: North Lower Level Prefunction (Phoenix Convention Center - West and North Buildings)

Quiet Room (Thursday)
Location: West 206 (Phoenix Convention Center - West and North Buildings)

Registration (Thurs)
Location: North Lower Level Prefunction (Phoenix Convention Center - West and North Buildings)

7:30 AM-5:00 PM: Thursday, 10 January 2019


Speaker Ready Room (Thurs)
Location: North 121A (Phoenix Convention Center - West and North Buildings)

8:30 AM-9:30 AM: Thursday, 10 January 2019

Recording files available
Joint Session 3
Connections between Tropical Convection and the Stratosphere—Part III
Location: West 212A (Phoenix Convention Center - West and North Buildings)
Hosts: (Joint between the 20th Conference on Middle Atmosphere; and the Seventh Symposium on the Madden-Julian Oscillation and Sub-Seasonal Monsoon Variability )
Cochairs: Casey R. Densmore, U.S. Naval Academy; Shuguang Wang, Columbia Univ.
8:30 AM
J3.1
More Frequent Sudden Stratospheric Warming Events due to a Stronger Madden–Julian Expected in a Warmer Climate: Role of Midlatitude Tropospheric Jet
Wanying Kang, Harvard Univ., Cambridge, MA; and E. Tziperman
Recorded Presentation

8:45 AM
J3.2
The Impact of Tropospheric and Stratospheric Tropical Variability on the Location, Frequency, and Duration of Cool-Season Extratropical Weather Systems
Andrea L. Lang, University at Albany, SUNY, Albany, NY; and H. E. Attard
Recorded Presentation

9:00 AM
J3.3
Influence of the Quasi-Biennial Oscillation and the Madden–Julian Oscillation on Midlatitude Circulation and Surface Temperature and Precipitation Anomalies
Malori Redman, The Univ. of Arizona, Tucson, AZ; and L. L. Hood and T. J. Galarneau Jr.
Recorded Presentation

9:15 AM
J3.4
MJO Modulation of Surface Air Temperature over Eastern North America during Northern Winter: Dependence on the Phase of the Stratospheric QBO
Lon L. Hood, The Univ. of Arizona, Tucson, AZ; and M. Redman and T. J. Galarneau Jr.

9:00 AM-11:00 AM: Thursday, 10 January 2019


Meeting with Sustainable Cities Network of Arizona
Location: Estrella (Sheraton Hotel )

9:00 AM-12:00 PM: Thursday, 10 January 2019


Exhibit Hall (Thurs)
Location: Hall 5-6 (Phoenix Convention Center - West and North Buildings)

9:30 AM-10:30 AM: Thursday, 10 January 2019


Exhibit Hall Breakfast
Location: Hall 5-6 (Phoenix Convention Center - West and North Buildings)

10:00 AM-10:30 AM: Thursday, 10 January 2019


Meet President Roger M. Wakimoto (Thurs)
Location: Hall 5-6 (Phoenix Convention Center - West and North Buildings)

10:30 AM-12:00 PM: Thursday, 10 January 2019

Recording files available
Session 7
Atmospheric Reanalyses and Long-Term Observational Datasets for Middle Atmospheric Studies
Location: West 212A (Phoenix Convention Center - West and North Buildings)
Host: 20th Conference on Middle Atmosphere
Cochairs: Krzysztof Wargan, Science Systems and Applications, Inc.; G.L. Manney, NorthWest Research Associates and New Mexico Institute of Mining and Technology
10:30 AM
7.1
The Annular Modes in Reanalyses: The Value of Conventional and Surface-Observation Input Reanalyses in the Northern Hemisphere (Invited Presentation)
Edwin P. Gerber, Courant Institute of Mathematical Sciences, New York, NY; and P. Martineau
Recorded Presentation

11:00 AM
7.2
The Global Diabatic Circulation in Reanalyses: A Comparison to the Residual Circulation, Water Vapor, and Ozone
Marianna Linz, Univ. of California, Los Angeles, Los Angeles, CA; and M. Abalos, A. S. Glanville, D. E. Kinnison, A. Ming, and J. L. Neu
Recorded Presentation

11:15 AM
7.3
Tale of the Tape: A Long-term Record of Vertical Transport in the Tropical Stratosphere Derived from Water Vapor Measurements
Ken Minschwaner, New Mexico Institute of Mining and Technology, Socorro, NM; and S. M. Davis and K. H. Rosenlof
Recorded Presentation

11:30 AM
7.4
Observation and Attribution of Temperature Trends near the Stratopause from HALOE
Ellis Remsberg, NASA LRC, Hampton, VA
Recorded Presentation

11:45 AM
7.5
Inconsistent Mesoscale Spectra in Models and Reanalyses
Jih-Wang Aaron Wang, CIRES, Boulder, CO; and P. D. Sardeshmukh
Recorded Presentation

12:00 PM-1:30 PM: Thursday, 10 January 2019


Lunch Break (Thurs)

12:45 PM-1:05 PM: Thursday, 10 January 2019


Daily Weather Briefings (Thurs)
Location: North 132ABC (Phoenix Convention Center - West and North Buildings)

1:00 PM-4:00 PM: Thursday, 10 January 2019


Excursion

1:30 PM-2:30 PM: Thursday, 10 January 2019


Walter Orr Robert Lecture

1:30 PM-3:00 PM: Thursday, 10 January 2019

Recording files available
Session 8
Modeling, Predictability and Teleconnections of the Quasi-Biennial Oscillation
Location: West 212A (Phoenix Convention Center - West and North Buildings)
Host: 20th Conference on Middle Atmosphere
Cochairs: Sean M. Davis, NOAA/ESRL; Jadwiga Richter, NCAR
1:30 PM
8.1
On the Direct Influence of the Stratospheric QBO on the Troposphere: A History of Observational Studies (1955–2003) (Invited Presentation)
Matthew Hitchman, Univ. of Wisconsin–Madison, Madison, WI
Recorded Presentation

1:45 PM
8.2
Determination of Optimal Gravity Wave Source Parameters for Improved Seasonal Forecasting of the Quasi-Biennial Oscillation
Cory A Barton, NRL, Washington, DC; and J. McCormack
Recorded Presentation

2:00 PM
8.3
QBO Signals in Chemical Constituents Simulated with WACCM
Rolando R. Garcia, NCAR, Boulder, CO; and J. Richter
Recorded Presentation

2:15 PM
8.4
Nearly Identical Cycles of the Quasi-Biennial Oscillation of the Equatorial Lower Stratosphere
Timothy J. Dunkerton, NorthWest Research Associates, Redmond, WA
Recorded Presentation

2:30 PM
8.5
Linking the Quasi-Biennial Oscillation and Projected Arctic Sea-Ice Loss to Stratospheric Variability in Early Winter
Zachary M. Labe, Univ. of California, Irvine, Irvine, CA; and Y. Peings and G. Magnusdottir
Recorded Presentation

2:45 PM
8.6
Quasi-Biennial Oscillation in a Warming Climate
Jadwiga Richter, NCAR, Boulder, CO; and N. Butchart, J. Anstey, A. C. Bushell, Y. Kawatani, and S. M. Osprey
Recorded Presentation

3:00 PM-3:30 PM: Thursday, 10 January 2019


PM Coffee Break (Thurs)
Location: Meeting room foyers (Phoenix Convention Center - West and North Buildings)

3:30 PM-5:00 PM: Thursday, 10 January 2019

Recording files available
Session 9
Future Observations of the Middle Atmosphere—Needs and Capabilities
Location: West 212A (Phoenix Convention Center - West and North Buildings)
Host: 20th Conference on Middle Atmosphere
Cochairs: Anne M. Thompson, NASA GSFC; Nathaniel Livesey, JPL; Paul A. Newman, NASA GSFC
3:30 PM
9.1
Observations of Chemical Species in the Middle Atmosphere: Historical Evolution and New Perspectives (Invited Presentation)
Guy Brasseur, NCAR, Boulder, CO
Recorded Presentation

4:00 PM
9.2
Assessing How the Loss of Middle Atmospheric Profile Observations Impacts the Quality of High Altitude Meteorological Analyses
John McCormack, NRL, Washington, DC; and D. D. Kuhl and N. L. Baker

4:15 PM
9.3
The Value of Homogenized Ozonesonde Networks: Twenty Years in the SHADOZ
Jacquelyn C. Witte, SSAI, Greenbelt, MD; and A. M. Thompson, B. Johnson, G. J. R. Coetzee, F. Posny, H. Voemel, S. Y. Ogino, M. Mohamad, R. Stubi, G. Romanens, F. R. da Silva, N. Komala, M. Fujiwara, A. Piters, M. Maata, F. Mani, and H. B. Selkirk
Recorded Presentation

4:30 PM
9.4
Ozonesonde Quality Assurance: JOSIE-SHADOZ (2017) and SHALLOTS (2018)
Anne M. Thompson, NASA GSFC, Greenbelt, MD; and H. G. J. Smit, J. C. Witte, R. M. Stauffer, J. T. Sullivan, K. Wolff, G. B. Brothers, B. Johnson, R. K. Sakai, and T. Knepp
Recorded Presentation

4:45 PM
9.5
Loon: A Balloon-Based Platform for Scientific Experiments in the Lower Stratosphere
Max Kamenetsky, Loon, LLC, Mountain View, CA; and R. W. Carver, A. Lonkar, and S. Candido

5:00 PM-5:30 PM: Thursday, 10 January 2019


99th AMS Annual Meeting Adjourns
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