A11C-0078
Ozone, Iodine, and MSA - Case studies in Antarctic aerosol composition from the 2ODIAC Campaign
Monday, 14 December 2015
Poster Hall (Moscone South)
Michael Giordano1, Lars Kalnajs2, Terry Deshler3, Sean M Davis4, Anita Johnson1, Andrew G Slater5, James Douglas Goetz1, Anondo D Mukherjee6, Peter F DeCarlo1 and The 2ODIAC Team, (1)Drexel University, Philadelphia, PA, United States, (2)University of Colorado, Boulder, CO, United States, (3)University of Wyoming, Laramie, WY, United States, (4)NOAA Boulder, Earth System Research Laboratory, Boulder, CO, United States, (5)National Snow and Ice Data Center, Boulder, CO, United States, (6)University of Colorado at Boulder, Boulder, CO, United States
Abstract:
Aerosol generation and transport over the Polar Regions, and especially Antarctica, remains a source of uncertainty for geophysical scientists. A characterization of aerosol sources, production, and lifecycle processes in the Polar Regions is required to better understand the polar atmosphere. In an attempt to better characterize Antarctic aerosol and trace gas interactions, the Two-Season, Ozone Depletion and Interaction with Aerosols Campaign (2ODIAC) was launched over the Austral Spring/Summer of 2014 and Austral Winter of 2015. One highlight of the campaign is the first ever deployment of a high-resolution aerosol mass spectrometer to Antarctica. In conjunction with trace gas, meteorology, and aerosol sizing measurements, this presentation will focus on case studies from the campaign relevant to the atmospheric science community. Questions about the role of iodine, MSA, and ozone depletion events in regards to aerosol composition will be examined. Specific attention will be paid to aerosol compositional changes before, during, and after particle bursts especially where changes in aerosol sulfate oxidation occurred (SO2 -> SO4)
