globalchange  > 气候减缓与适应
DOI: 10.1029/2017JD026889
Scopus记录号: 2-s2.0-85050399361
论文题名:
Link Between Arctic Tropospheric BrO Explosion Observed From Space and Sea-Salt Aerosols From Blowing Snow Investigated Using Ozone Monitoring Instrument BrO Data and GEOS-5 Data Assimilation System
作者: Choi S.; Theys N.; Salawitch R.J.; Wales P.A.; Joiner J.; Canty T.P.; Chance K.; Suleiman R.M.; Palm S.P.; Cullather R.I.; Darmenov A.S.; da Silva A.; Kurosu T.P.; Hendrick F.; Van Roozendael M.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期:13
起始页码: 6954
结束页码: 6983
语种: 英语
英文关键词: bromine ; Halogen ; polar chemistry ; sea-salt aerosol ; tropospheric chemistry
Scopus关键词: aerosol ; aerosol composition ; arctic environment ; atmospheric chemistry ; blowing snow ; bromine ; data assimilation ; halogen ; instrumentation ; ozone ; polar region ; sea ice ; sea salt ; snow ; troposphere
英文摘要: Bromine radicals (Br + BrO) are important atmospheric species owing to their ability to catalytically destroy ozone as well as their potential impacts on the oxidative pathways of many trace gases, including dimethylsulfide and mercury. Using space-based observations of BrO, recent studies have reported rapid enhancements of tropospheric BrO over large areas (so called “BrO explosions”) connected to near-surface ozone depletion occurring in polar spring. However, the source(s) of reactive bromine and mechanism(s) that initiate these BrO explosions are uncertain. In this study, we investigate the relationships between Arctic BrO explosions and two of the proposed sources of reactive bromine: sea-salt aerosol (SSA) generated from blowing snow and first-year (seasonal) sea ice. We use tropospheric column BrO derived from the Ozone Monitoring Instrument (OMI) in conjunction with the Goddard Earth Observing System Version 5 (GEOS-5) data assimilation system provided by National Aeronautics and Space Administration Global Modeling and Assimilation Office. Case studies demonstrate a strong association between the temporal and spatial extent of OMI-observed BrO explosions and the GEOS-5 simulated blowing snow-generated SSA during Arctic spring. Furthermore, the frequency of BrO explosion events observed over the 11-year record of OMI exhibits significant correlation with a time series of the simulated SSA emission flux in the Arctic and little to no correlation with a time series of satellite-based first-year sea ice area. Therefore, we conclude that SSA generated by blowing snow is an important factor in the formation of the BrO explosion observed from space during Arctic spring. ©2018. American Geophysical Union. All Rights Reserved. This article has been contributed to by US Government employees and their work is in the public domain in the USA.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113521
Appears in Collections:气候减缓与适应

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作者单位: Science Systems and Applications, Inc., Lanham, MD, United States; NASA Goddard Space Flight Center, Greenbelt, MD, United States; Belgian Institute for Space Aeronomy (BIRA-IASB), Brussels, Belgium; Department of Atmospheric and Oceanic Science, University of Maryland, College Park, MD, United States; Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States; Department of Chemistry and Biochemistry, University of Maryland, College Park, MD, United States; Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, United States; NASA Jet Propulsion Laboratory/California Institute of Technology, Pasadena, CA, United States

Recommended Citation:
Choi S.,Theys N.,Salawitch R.J.,et al. Link Between Arctic Tropospheric BrO Explosion Observed From Space and Sea-Salt Aerosols From Blowing Snow Investigated Using Ozone Monitoring Instrument BrO Data and GEOS-5 Data Assimilation System[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(13)
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