A42D:
Processes Controlling Upper Troposphere / Lower Stratosphere Composition and Structure V

Thursday, 18 December 2014: 10:20 AM-12:20 PM
Chairs:  Ross J Salawitch, University of Maryland, College Park, MD, United States and Neil Richard Peter Harris, University of Cambridge, Cambridge, United Kingdom
Primary Conveners:  Ross J Salawitch, University of Maryland, College Park, MD, United States
Co-conveners:  Troy D Thornberry, NOAA ESRL, Boulder, CO, United States and Neil Richard Peter Harris, University of Cambridge, Cambridge, United Kingdom
OSPA Liaisons:  Troy D Thornberry, NOAA ESRL, Boulder, CO, United States

Abstracts Submitted to this Session:

10:20 AM
 
Airborne Tropical TRopopause EXperiment (ATTREX) 2014 Western Pacific Campaign
Eric J Jensen and Leonhard Pfister, NASA Ames Research Center, Moffett Field, CA, United States
10:35 AM
 
Relative Humidity Distributions in the Tropical Tropopause Layer Measured During NASA ATTREX
Andrew W Rollins1,2, Troy D Thornberry1,2, Ru-Shan Gao2, Sarah Woods3, Thaopaul V Bui4 and David W Fahey1,2, (1)University of Colorado / CIRES, Boulder, CO, United States, (2)NOAA Earth System Research Lab, Boulder, CO, United States, (3)SPEC Inc, Boulder, CO, United States, (4)NASA Ames Research Center, Moffett Field, CA, United States
10:50 AM
 
How much ice is there in the Tropical Tropopause Layer? Observations from the ATTREX mission, from the Global Hawk and from Space
Melody A Avery1, Troy D Thornberry2, Stuart A Young3, Sarah Woods4, Qixu Mo4, Paul Lawson4, Matthew J McGill5, Mark Vaughan6, John E Yorks7, Jacques Robert Pelon8, Glenn S Diskin9, Eric J Jensen10, Dennis L Hlavka7, David M Winker11, David W Fahey12, Charles R Trepte11, Bruce Gandrud4, Anne Garnier13 and Andrew W Rollins2, (1)NASA Langley Research Ctr, Hampton, VA, United States, (2)NOAA ESRL, Boulder, CO, United States, (3)CSIRO Marine and Atmospheric Research, Aspendale, Victoria, Australia, (4)SPEC Inc, Boulder, CO, United States, (5)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (6)NASA, Hampton, VA, United States, (7)SSAI/NASA GSFC, Greenbelt, MD, United States, (8)CNRS, Paris, France, (9)NASA Langley Research Ctr, Hampton, VA, United States, (10)NASA Ames Research Center, Moffett Field, CA, United States, (11)NASA Langley Research Center, Hampton, VA, United States, (12)University of Colorado / CIRES, Boulder, CO, United States, (13)Science Systems and Applications, Inc. Hampton, Hampton, VA, United States
11:05 AM
 
Tropical Tropopause Layer Cloud Formation, Convection and Stratospheric Dehydration
Mark R Schoeberl, Science and Technology Corporation, Boulder, CO, United States, Andrew E Dessler, Texas A&M Univ, College Station, TX, United States, Tao Wang, Texas A & M University, College Station, TX, United States, Melody A Avery, NASA Langley Research Ctr, Hampton, VA, United States and Eric J Jensen, NASA Ames Research Center, Moffett Field, CA, United States
11:20 AM
 
Variability and trends in UTLS temperatures and water vapor
Karen Hepler Rosenlof1, Birgit Hassler1,2, Ryan R Neely III3, Sean M Davis4 and Dale F Hurst4, (1)NOAA ESRL CSD, Boulder, CO, United States, (2)University of Colorado at Boulder, Cooperative Institute for Research in Environmental Sciences - CIRES, Boulder, CO, United States, (3)National Center for Atmospheric Research, Advanced Studies Program, Boulder, CO, United States, (4)Cooperative Institute for Research in Environmental Sciences, Boulder, CO, United States
11:35 AM
 
Processes Controlling Water Vapor in the UT/LS: Eight Years of Monthly Measurements by the IAGOS-CARIBIC Observatory
Andreas Zahn1, Emanuel Christner1, Peter J.F. van Velthoven2, Armin Rauthe-Schoech3, Angela Kathleen Baker3 and Carl A M Brenninkmeijer3, (1)Karlsruhe Institute of Technology, Atmospheric trace gas measurements and remote sensing, Karlsruhe, Germany, (2)Royal Netherlands Meteorological Institute, De Bilt, Netherlands, (3)Max Planck Institute for Chemistry, Mainz, Germany
11:50 AM
 
A case-study analysis of convectively sourced water vapor plumes in the overworld stratosphere over the continental U.S. observed in situ during the SEAC4RS mission
Jessica B Smith1, Maryann R Sargent2, David M Wilmouth2, James G Anderson2, Kristopher M Bedka3, Robert L Herman4, Jasna Vellovic Pittman2 and Eric J Jensen5, (1)Harvard Univ/Anderson Group, Cambridge, MA, United States, (2)Harvard University, Cambridge, MA, United States, (3)NASA Langley Research Center, Climate Science Branch, Hampton, VA, United States, (4)NASA Jet Propulsion Laboratory, Pasadena, CA, United States, (5)NASA Ames Research Center, Moffett Field, CA, United States
12:05 PM
 
Is There Evidence of Convectively Injected Water Vapor in the Lowermost Stratosphere Over Boulder, Colorado?
Dale F Hurst1,2, Karen Hepler Rosenlof3, Sean M Davis2,3, Emrys G Hall1,2 and Allen F Jordan1,2, (1)Global Monitoring Division, NOAA Earth System Research Laboratory, Boulder, CO, United States, (2)Cooperative Institute for Research in Environmental Sciences, Boulder, CO, United States, (3)Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, CO, United States
 
See more of: Atmospheric Sciences