Stratospheric Injection of Bromine from Very Short Lived (VSL) Sources Inferred from CONTRAST

Tuesday, 16 December 2014
Ross J Salawitch1, Julie M Nicely2, Daniel C Anderson2, Elliot L Atlas3, Sue Schauffler4, Valeria Donets5, Richard Lueb6, Maria A Navarro6, Eric C Apel7, Nicola J Blake8, Alan J Hills7, Rebecca S Hornbrook7, Daniel D Riemer6, Dexian Chen9, Greg Huey10, David Tanner11, Rainer M Volkamer12, Theodore Konstantinos Koenig13, Sunil Baidar13, Barbara K Dix13, Andrew John Weinheimer7, Glenn M Wolfe Jr14, Thomas F Hanisco15, Samuel R Hall16, Kirk Ullmann17, Rafael Fernandez18, Alfonso Saiz-Lopez19, Douglas Edward Kinnison7 and J F Lamarque20, (1)University of Maryland, College Park, MD, United States, (2)University of Maryland College Park, College Park, MD, United States, (3)University Miami, Miami, FL, United States, (4)Natl Ctr Atmospheric Research, Boulder, CO, United States, (5)RSMAS, Miami, FL, United States, (6)University of Miami, Miami, FL, United States, (7)NCAR, Boulder, CO, United States, (8)University of California Irvine, Irvine, CA, United States, (9)Georgia Institute of Technology Main Campus, Atlanta, GA, United States, (10)Georgia Institute of Technology, Atlanta, GA, United States, (11)Georgia Tech, Atlanta, GA, United States, (12)Univ. of Colorado, Boulder, Boulder, CO, United States, (13)University of Colorado at Boulder, Boulder, CO, United States, (14)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (15)NASA GSFC, Greenbelt, MD, United States, (16)NCAR, Denver, CO, United States, (17)NOAA Chemical Sciences Divisio, Boulder, CO, United States, (18)Institute of Physical Chemistry Rocasolano, CSIC, Madrid, Spain, (19)Spanish National Research Council, Zaragoza, Spain, (20)National Center for Atmospheric Research, Boulder, CO, United States
The CONvective TRansport of Active Species in the Tropics (CONTRAST) field campaign was designed to quantify the abundance of very short lived (VSL) bromocarbons in the marine boundary layer (MBL) of the Tropical Western Pacific, the variation with respect to altitude of these compounds from the MBL to the base of the tropopause transition layer, and the abundance of BrO that is formed as VSL bromocarbons decompose. We’ll examine the theoretical understanding of total bromine in the VSL source gases by comparing measurements from two instruments, AWAS and TOGA, to model values found using CAM-Chem. We’ll also examine the consistency between tropospheric loss of the compounds and the appearance of products using observations of BrO from two other instruments, CIMS and DOAS. Finally, implications for stratospheric supply of bromine via both Source Gas Injection and Product Gas Injection will be described.