A12E:
Observations and Modeling of the Upper Troposphere and Lower Stratosphere II

Submit an Abstract to this Session



Session ID#: 30946

Session Description:
The upper troposphere/lower stratosphere (UT/LS) region of the atmosphere plays an important role in Earth’s radiative balance and climate, and is a region of significant chemistry-climate coupling. Understanding the processes controlling the composition and structure of the UT/LS is crucial to predicting future changes and their resulting feedback in the climate system. In this session, we welcome papers that utilize in situ measurements, satellite observations and/or modeling analyses considering either present or future climates to explore new developments regarding the understanding of fundamental UTLS processes and the interaction of the UTLS with climate. Abstract submissions on the full range of UTLS topics are encouraged, including dynamics, transport and mixing, chemical composition, the abundance and distribution of water vapor and aerosols, and cirrus cloud properties and processes.
Primary Convener:  Troy D Thornberry, NOAA Chemical Sciences Laboratory, Boulder, United States; University of Colorado, Cooperative Institute for Research in Environmental Sciences, Boulder, CO, United States
Conveners:  Rei Ueyama, NASA Ames Research Center, Moffett Field, CA, United States and Karen Hepler Rosenlof, Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, CO, United States
Chairs:  Karen Hepler Rosenlof, Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, CO, United States, Rei Ueyama, NASA Ames Research Center, Moffett Field, CA, United States and Troy D Thornberry, NOAA Earth System Research Laboratory, Chemical Sciences Division, Boulder, CO, United States
OSPA Liaison:  Karen Hepler Rosenlof, Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, CO, 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]
3311 Clouds and aerosols [ATMOSPHERIC PROCESSES]
3375 Tropopause dynamics [ATMOSPHERIC PROCESSES]

Abstracts Submitted to this Session:

Changes in upper troposphere/lower stratosphere aerosol since 1980 in the Goddard Earth Observing System (GEOS-5) model (Invited) (209454)
Valentina Aquila, American University, Department of Environmental Science, Washington, DC, United States; NASA GSFC, Greenbelt, United States, Peter Richard Colarco, NASA Goddard Space Flight Center, Greenbelt, MD, United States and Luke Oman, NASA Goddard Space Flight Center, Greenbelt, United States
Origin, Maintenance and Variability of the Asian Tropopause Aerosol Layer (ATAL): The Roles of Monsoon Dynamics (214743)
William K-M Lau, University of Maryland College Park, Department of Atmospheric and Oceanic Sciences, College Park, MD, United States, Cheng Yuan, Student, ESSIC, U. of Maryland, College Park, United States and Zhanqing Li, Univ of Maryland College Park, AOSC, College Park, United States
Overview of the aerosol measurements in the UTLS during the POSIDON campaign (246028)
Ru-Shan Gao, NOAA Boulder, Boulder, CO, United States, Shang Liu, NOAA Earth System Research Laboratory, Chemical Sciences Division, Boulder, United States, Troy D Thornberry, Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO, United States, Andrew W Rollins, Cooperative Institute for Research in Environmental Sciences, Boulder, CO, United States, Pengfei Yu, CIRES, Boulder, United States, Sarah Woods, SPEC Inc., Boulder, CO, United States and Thaopaul V Bui, NASA Ames Research Center, Moffett Field, United States
Sources of enhanced SO2 in the tropical Western Pacific UT/LS (281822)
Andrew W Rollins1,2, Troy D Thornberry1,2, Shang Liu1,3, Eric A Ray2,4, Elliot L Atlas5, Maria A Navarro6, Sue Schauffler7, Thaopaul V Bui8 and Ru-Shan Gao2, (1)University of Colorado / CIRES, Boulder, CO, United States, (2)NOAA Earth System Research Laboratory, Chemical Sciences Division, Boulder, CO, United States, (3)NOAA Earth System Research Laboratory, Chemical Sciences Division, Boulder, United States, (4)NOAA Chemical Sciences Laboratory, Boulder, United States, (5)RSMAS, Miami, FL, United States, (6)University of Miami, Miami, FL, United States, (7)National Center for Atmospheric Research, Boulder, CO, United States, (8)NASA Ames Research Center, Moffett Field, United States
Fate of pollution emitted during the 2015 Indonesian Fire Season (286201)
Mijeong Park, National Center for Atmospheric Research, Boulder, CO, United States, Helen Marie Worden, NSF National Center for Atmospheric Research (NSF NCAR), Atmospheric Chemistry Observations & Modeling Laboratory (ACOM), Boulder, CO, United States, Louisa K Emmons, NSF National Center for Atmospheric Research (NSF NCAR), Atmospheric Chemistry Observations & Modeling Laboratory (ACOM), Boulder, United States and Simone Tilmes, NSF National Center for Atmospheric Research, Atmospheric Chemistry Observations and Modeling Laboratory, Boulder, United States
Combining laboratory results, numerical modeling, and in situ measurements to investigate the relative contributions of homogeneous and heterogeneous nucleation to ice formation in the tropical tropopause layer (283904)
Eric J Jensen1, Bernd Karcher2, Rei Ueyama3, Leonhard Pfister3, Thaopaul V Bui4, Glenn S Diskin5, Joshua P DiGangi6, Sarah Woods7, Paul Lawson8, Karl D Froyd9 and Daniel M Murphy10, (1)National Center for Atmospheric Research, Atmospheric Chemistry Observations and Modeling Laboratory, Boulder, CO, United States, (2)German Aerospace Center DLR Oberpfaffenhofen, Institute of Atmospheric Physics, Oberpfaffenhofen, Germany, (3)NASA Ames Research Center, Moffett Field, CA, United States, (4)NASA Ames Research Center, Moffett Field, United States, (5)NASA Langley Research Center, Chemistry and Dynamics Branch, Hampton, United States, (6)NASA Langley Research Center, Hampton, VA, United States, (7)SPEC Inc., Boulder, CO, United States, (8)SPEC Inc, Boulder, CO, United States, (9)CIRES, Boulder, United States, (10)NOAA, Chemical Sciences Laboratory, Boulder, United States
The impact on UT/LS cirrus clouds in the CAM/CARMA model using a new interactive aerosol parameterization. (293821)
Christopher Maloney, University of Colorado Boulder, Cooperative Institute for Research in Environmental Sciences, Boulder, United States, Brian Toon, University of Colorado at Boulder, ATOC/LASP, Boulder, CO, United States and Charles Bardeen, National Center for Atmospheric Research, Boulder, United States

See more of: Atmospheric Sciences