A43M:
Processes Controlling Upper Troposphere / Lower Stratosphere Composition and Structure VI

Thursday, 18 December 2014: 1:40 PM-3:40 PM
Chairs:  Troy D Thornberry, NOAA ESRL, Boulder, CO, 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:  Ross J Salawitch, University of Maryland, College Park, MD, United States

Abstracts Submitted to this Session:

1:40 PM
 
Low Ozone and High Mixing Ratios of Long-Lived Trace Gases in the Tropical Tropopause Layer over the Western Pacific
Eric J Hintsa1,2, Fred L Moore1,2, Geoffrey S Dutton1,2, Brad David Hall1, Alexander Haugstad1, Audra McClure-Begley1,2, Jon David Nance1,2, James W Elkins1, Ru-Shan Gao1, Andrew W Rollins1,2, Troy D Thornberry1,2, Laurel A Watts1,2, Bruce C Daube3, Jasna V Pittman3, Steven C Wofsy3, Teresa Lynn Campos4, Cameron R Homeyer5, Shawn Honomichl4, Laura Pan4 and Andrew John Weinheimer4, (1)NOAA/ESRL, Boulder, CO, United States, (2)Cooperative Institute for Research in Environmental Sciences, Boulder, CO, United States, (3)Harvard University, Cambridge, MA, United States, (4)National Center for Atmospheric Research, Boulder, CO, United States, (5)University of Oklahoma Norman Campus, Norman, OK, United States
1:55 PM
 
Model analysis of the tropospheric ozone trend over Reunion Island from 1992 to 2011
Junhua Liu1, Jose M Rodriguez2, Anne M Thompson2, Anne R Douglass2, Mark A Olsen3, Stephen D Steenrod1 and Jennifer A Logan4, (1)NASA GSFC/USRA GESTAR, Greenbelt, MD, United States, (2)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (3)NASA GSFC/MSU GESTAR, Greenbelt, MD, United States, (4)Harvard Univ, Cambridge, MA, United States
2:10 PM
 
Examining the Oxidative Capacity of the Troposphere in the Remote Tropical Western Pacific Using Measurements from CONTRAST
Julie M Nicely1, Daniel C Anderson1, Timothy P Canty1, Ross J Salawitch1, Glenn M Wolfe Jr2, Eric C Apel3, Elliot L Atlas4, Nicola J Blake5, James F Bresch3, Teresa Lynn Campos3, Samuel R Hall3, Thomas F Hanisco2, Cameron R Homeyer6, Shawn Honomichl3, Rebecca S Hornbrook3, Jorgen B Jensen3, Douglas Edward Kinnison3, J F Lamarque3, Laura Pan3, Daniel D Riemer4, Kirk Ullmann7 and Andrew John Weinheimer3, (1)University of Maryland College Park, College Park, MD, United States, (2)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (3)National Center for Atmospheric Research, Boulder, CO, United States, (4)University Miami, Miami, FL, United States, (5)University California Irvine, Vineyard Haven, MA, United States, (6)University of Oklahoma Norman Campus, Norman, OK, United States, (7)NOAA Chemical Sciences Divisio, Boulder, CO, United States
2:25 PM
 
Modeling the Formation of Tropical Rings of Atomic Bromine and Iodine
Alfonso Saiz-Lopez1, Rafael Fernandez1, Ross J Salawitch2, Douglas Edward Kinnison3, J F Lamarque3, Carlos OrdoƱez1, J C Gomez Martin1 and Simone Tilmes3, (1)Institute of Physical Chemistry Rocasolano, CSIC, Madrid, Spain, (2)University of Maryland, College Park, MD, United States, (3)National Center for Atmospheric Research, Boulder, CO, United States
2:40 PM
 
Organic Halogen and Related Trace Gases in the Tropical Atmosphere: Results from Recent Airborne Campaigns Over the Pacific
Elliot L Atlas1, Maria A Navarro1, Valeria Donets1, Sue Schauffler2, Richard Lueb1,2, Roger Hendershot2, Steve Gabbard2, Rebecca S Hornbrook2, Eric C Apel2, Daniel D Riemer1, Laura Pan2, Ross J Salawitch3, Julie M Nicely3, Stephen A Montzka4, Ben Miller4,5, Fred L Moore4,5, James W Elkins4, Eric J Hintsa4,5, Teresa Lynn Campos2, Birgit Quack6, Xiaorong Zhu1 and Leslie Pope1, (1)University of Miami, Miami, FL, United States, (2)National Center for Atmospheric Research, Boulder, CO, United States, (3)University of Maryland, College Park, MD, United States, (4)NOAA/Earth System Research Lab, Boulder, CO, United States, (5)Cooperative Institute for Research in Environmental Sciences, Boulder, CO, United States, (6)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
2:55 PM
 
Bromine Chemistry in the Tropical UTLS during the 2011, 2013 and 2014 ATTREX Experiments
Jochen Stutz1, Max Spolaor1, James Festa1, Jui Yi Tsai1, Santo F Colosimo1, Ross Cheung1, Bodo Werner2, Tim Deutschmann2, Lisa Scalone2, Rasmus Raecke3, Ugo Tricoli2, Klaus Pfeilsticker2, Maria A Navarro4 and Elliot L Atlas4, (1)University of California Los Angeles, Los Angeles, CA, United States, (2)University of Heidelberg, Institut fuer Umweltphysik, Heidelberg, Germany, (3)Karlsruhe Institute of Technology, Institute for Meteorology and Climate Research (IMK-ASF), Karlsruhe, Germany, (4)University of Miami, Miami, FL, United States
3:10 PM
 
IO in the Lower Stratosphere and Vertical Profiles over the Tropical Eastern and Western Pacific
Theodore Konstantinos Koenig1, Rainer M Volkamer2, Sunil Baidar3, Barbara K Dix1, Mathew J Evans4, Lucy Carpenter4, Tomas Sherwen4, Douglas Edward Kinnison5, J F Lamarque6, Alfonso Saiz-Lopez7, Eric C Apel6, Rebecca S Hornbrook5, Elliot L Atlas8, Laura Pan6 and Ross J Salawitch9, (1)University of Colorado at Boulder, Department of Chemistry and Biochemistry, Boulder, CO, United States, (2)Univ. of Colorado, Boulder, Boulder, CO, United States, (3)University of Colorado at Boulder, Cooperate Institute for Research in Environmental Sciences, Boulder, CO, United States, (4)University of York, York, United Kingdom, (5)NCAR, Boulder, CO, United States, (6)National Center for Atmospheric Research, Boulder, CO, United States, (7)Spanish National Research Council, Zaragoza, Spain, (8)University Miami, Miami, FL, United States, (9)University of Maryland, College Park, MD, United States
3:25 PM
 
IODINE'S IMPACT ON TROPOSPHERIC OXIDANTS; A GLOBAL CTM EVALUATION WITHIN GEOS-CHEM
Tomas Sherwen1, Lucy Carpenter1, Mathew J Evans1, Rainer M Volkamer2, Barbara K Dix2 and Alfonso Saiz-Lopez3, (1)University of York, York, United Kingdom, (2)Univ. of Colorado, Boulder, Boulder, CO, United States, (3)Spanish National Research Council, Zaragoza, Spain
 
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