A12E:
Processes and Linkages in the Upper Troposphere and Lower Stratosphere: Observations and Models II

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Session ID#: 16349

Session Description:
The upper troposphere and lower stratosphere (UTLS) is an important region in the atmosphere with significant role in radiative forcing and climate. Despite the growing number of reliable observations and recent advances in the modeling of relevant processes (e.g., convection, cloud microphysical and radiative processes, reactive chemistry, tropical wave interactions), the mechanisms maintaining the composition and structure of the UTLS are still not well understood. This session will explore new developments regarding fundamental processes and linkages in the UTLS, as provided by observations, data assimilation and modeling. We encourage abstract submissions on a wide spectrum of UTLS topics including dynamical and chemical coupling with convection, transport pathways from the troposphere to the stratosphere, cirrus cloud impact and processes, evaluation of aircraft measurements, satellite retrievals and global models, halogen chemistry, and the role of UTLS water vapor in future climate.
Primary Convener:  Rei Ueyama, NASA Ames Research Center, Moffett Field, CA, United States
Conveners:  William John Randel1, Tao Wang2 and Marta Abalos1, (1)National Center for Atmospheric Research, Boulder, CO, United States(2)JPL/NASA/Caltech, Pasadena, CA, United States
Chairs:  Tao Wang, JPL/NASA/Caltech, Pasadena, CA, United States and Marta Abalos, National Center for Atmospheric Research, Boulder, CO, United States
OSPA Liaison:  Rei Ueyama, NASA Ames Research Center, Moffett Field, CA, United States
Index Terms:

0340 Middle atmosphere: composition and chemistry [ATMOSPHERIC COMPOSITION AND STRUCTURE]
0341 Middle atmosphere: constituent transport and chemistry [ATMOSPHERIC COMPOSITION AND STRUCTURE]
3362 Stratosphere/troposphere interactions [ATMOSPHERIC PROCESSES]

Abstracts Submitted to this Session:

Overview of the NASA Pacific Oxidants, Sulfur, Ice, Dehydration, and cONvection (POSIDON) Experiment (Invited) (160253)
Ru-Shan Gao1, Eric J Jensen2, Karen Hepler Rosenlof3, Elliot L Atlas4, Melody A Avery5, Thaopaul V Bui6, Peter Richard Colarco7, Glenn S Diskin8, James W Elkins9, Eric J Hintsa10, Dale F Hurst11, Paul Lawson12, Shang Liu13, Fred L Moore10, Leonhard Pfister14, Andrew W Rollins1, Sue Schauffler15, Mark R Schoeberl16, Troy D Thornberry1, Rei Ueyama14, Joseph Ulanowski17 and Sarah Woods18, (1)NOAA Chemical Sciences Laboratory, Boulder, United States, (2)National Center for Atmospheric Research, Atmospheric Chemistry Observations and Modeling Laboratory, Boulder, CO, United States, (3)Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, CO, United States, (4)University of Miami, Miami, United States, (5)NASA Langley Research Center, Hampton, VA, United States, (6)NASA Ames Research Center, Moffett Field, United States, (7)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (8)NASA Langley Research Center, Hampton, United States, (9)NOAA Boulder, Boulder, CO, United States, (10)NOAA/ESRL, Boulder, CO, United States, (11)Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, United States, (12)SPEC Inc, Boulder, CO, United States, (13)NOAA Earth System Research Laboratory, Chemical Sciences Division, Boulder, United States, (14)NASA Ames Research Center, Moffett Field, CA, United States, (15)National Center for Atmospheric Research, Boulder, CO, United States, (16)Science and Technology Corporation, Earth Sciences, Boulder, CO, United States, (17)University of Hertfordshire, Hatfield, United Kingdom, (18)SPEC Inc., Boulder, CO, United States
A Method for Obtaining High Frequency, Global, IR-Based Convective Cloud Tops for Studies of the Tropical Tropopause Layer (Invited) (164661)
Leonhard Pfister1, Eric J Jensen2, Mark R Schoeberl3 and Rei Ueyama1, (1)NASA Ames Research Center, Moffett Field, CA, United States, (2)National Center for Atmospheric Research, Atmospheric Chemistry Observations and Modeling Laboratory, Boulder, CO, United States, (3)Science and Technology Corporation, Earth Sciences, Boulder, CO, United States
Seasonal Contrasts of Air Mass Composition in the Extratropical UTLS (127224)
Peter Michael Hoor1, Stefan Mueller1, Heiko Bozem2, Jens Krause1, Andreas Zahn3, Harald Boenisch4, Andreas Engel5, Baerbel Vogel6, Martin Riese7, Hans Schlager8, Bjoern-Martin Sinnhuber9, Wolfgang Woiwode3 and Hermann Oelhaf3, (1)Johannes Gutenberg University of Mainz, Institute for Atmospheric Physics, Mainz, Germany, (2)Johannes Gutenberg University of Mainz, Mainz, Germany, (3)Karlsruhe Institute of Technology, Institute of Meteorology and Climate Research, Karlsruhe, Germany, (4)Goethe University Frankfurt, Institute for ATmospheric and Environmental Science, Frankfurt, Germany, (5)Goethe University Frankfurt, Institute for Atmospheric and Environmental Science, Frankfurt, Germany, (6)Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research(IEK-7): Stratosphere, Jülich, Germany, (7)Forschungszentrum Jülich GmbH, Jülich 52428, Germany, (8)German Aerospace Center (DLR), Institute of Atmospheric Physics, Oberpfaffenhofen, Germany, (9)KIT, IMK-ASF, Karlsruhe, Germany
Subkilometer-scale motions in the tropical tropopause layer from aircraft measurements: characterization and impact on vertical mixing (176975)
Aurelien Podglajen, Ecole Polytechnique, Palaiseau Cedex, France, Leonhard Pfister, NASA Ames Research Center, Moffett Field, CA, United States, Eric J Jensen, National Center for Atmospheric Research, Atmospheric Chemistry Observations and Modeling Laboratory, Boulder, CO, United States, M Joan Alexander, NorthWest Research Associates Boulder, Boulder, United States, Bernd Karcher, German Aerospace Center DLR Oberpfaffenhofen, Institute of Atmospheric Physics, Oberpfaffenhofen, Germany, William John Randel, National Center for Atmospheric Research, Boulder, CO, United States, Thaopaul V Bui, NASA Ames Research Center, Moffett Field, United States and Jonathan M Dean-Day, Bay Area Environmental Research Institute, Moffett Field, United States
Gravity Wave Spectra in the Lower Stratosphere Diagnosed from Project Loon Balloon Trajectories (148137)
Mark R Schoeberl1, Eric J Jensen2, Aurelien Podglajen3, Lawrence Coy4, Chandan Lodha5, Salvatore Candido5 and Robert W Carver6, (1)Science and Technology Corporation, Earth Sciences, Boulder, CO, United States, (2)National Center for Atmospheric Research, Atmospheric Chemistry Observations and Modeling Laboratory, Boulder, CO, United States, (3)Laboratoire de Météorologie Dynamique-IPSL CNRS/PSL-ENS/Sorbonne Université/Ecole Polytechnique, Paris, France, (4)Science Systems and Applications, Inc., Lanham, MD, United States, (5)Google, Mountain View, CA, United States, (6)Google Research, Mountain View, United States
Asian Summer Monsoon Pollutes the Northern Hemispheric Stratosphere (182193)
Pengfei Yu1, Ru-Shan Gao1, Karen Hepler Rosenlof2, Hagen Telg3, Shang Liu4, Zhixuan Bai5 and Jianchun Bian6, (1)NOAA Boulder, Boulder, CO, United States, (2)Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, CO, United States, (3)NOAA Boulder, GML, Boulder, CO, United States, (4)NOAA Earth System Research Laboratory, Chemical Sciences Division, Boulder, United States, (5)Key Laboratory of Middle Atmosphere and Global environment Observation, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China, (6)Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
In-Situ Observations Define the Role of Sulfur Dioxide in Stratospheric Aerosol Formation (159455)
Andrew W Rollins1, Troy D Thornberry1, Laurel A Watts2, Pengfei Yu3, Karen Hepler Rosenlof4, Michael J Mills5, Esther Baumann6, Fabrizio Giorgetta7, Thaopaul V Bui8, Michael Hopfner9, Kaley A Walker10, Chris D. Boone11, Peter F Bernath12, Peter Richard Colarco13, Paul A Newman14, David W Fahey15 and Ru-Shan Gao15, (1)NOAA Chemical Sciences Laboratory, Boulder, United States, (2)NOAA/ESRL, Boulder, CO, United States, (3)NOAA Earth System Research Laboratory and CIRES CU Boulder, Boulder, CO, United States, (4)Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, CO, United States, (5)National Center for Atmospheric Research, Atmospheric Chemistry, Observations, and Modeling Laboratory, Boulder, CO, United States, (6)National Institute of Standards and Technology Boulder Laboratories, Boulder, United States, (7)National Institute of Standards and Technology Boulder Laboratories, Boulder, CO, United States, (8)NASA Ames Research Center, Moffett Field, United States, (9)Karlsruhe Institute of Technology, Institute of Meteorology and Climate Research, Karlsruhe, Germany, (10)University of Toronto, Department of Physics, Toronto, ON, Canada, (11)University of Waterloo, Department of Chemistry, Waterloo, ON, Canada, (12)Old Dominion University, Chemistry and Biochemistry, Norfolk, VA, United States, (13)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (14)NASA Goddard Space Flight Center, Code 610, Greenbelt, MD, United States, (15)NOAA Boulder, Boulder, CO, United States

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