气候变化领域集成服务门户(CCPortal): The distribution of sea-salt aerosol in the global troposphere

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DOI	10.5194/acp-19-4093-2019
	The distribution of sea-salt aerosol in the global troposphere
	Murphy D.M.; Froyd K.D.; Bian H.; Brock C.A.; Dibb J.E.; Digangi J.P.; Diskin G.; Dollner M.; Kupc A.; Scheuer E.M.; Schill G.P.; Weinzierl B.; Williamson C.J.; Yu P.
发表日期	2019
ISSN	16807316
起始页码	4093
结束页码	4104
卷号	19 期号:6
英文摘要	We present the first data on the concentration of sea-salt aerosol throughout most of the depth of the troposphere and over a wide range of latitudes, which were obtained during the Atmospheric Tomography (ATom) mission. Sea-salt concentrations in the upper troposphere are very small, usually less than 10 ng per standard m3 (about 10 parts per trillion by mass) and often less than 1 ngm-3. This puts stringent limits on the contribution of sea-salt aerosol to halogen and nitric acid chemistry in the upper troposphere. Within broad regions the concentration of sea-salt aerosol is roughly proportional to water vapor, supporting a dominant role for wet scavenging in removing sea-salt aerosol from the atmosphere. Concentrations of sea-salt aerosol in the winter upper troposphere are not as low as in the summer and the tropics. This is mostly a consequence of less wet scavenging in the drier, colder winter atmosphere. There is also a source of sea-salt aerosol over pack ice that is distinct from that over open water. With a well-studied and widely distributed source, sea-salt aerosol provides an excellent test of wet scavenging and vertical transport of aerosols in chemical transport models. © Author(s) 2019.
语种	英语
scopus关键词	aerosol; atmospheric chemistry; atmospheric transport; concentration (composition); halogen; nitric acid; sea salt; troposphere
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/144531
作者单位	Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, CO, United States; Cooperative Institute for Research in Environmental Sciences (CIRES), NOAA Earth System Research Laboratory, University of Colorado, Boulder, CO, United States; Joint Center for Environmental Technology, University of Maryland, Baltimore County, Baltimore, MD, United States; Laboratory for Atmospheres, NASA Goddard Space Flight Center, Greenbelt, MD, United States; Earth Systems Research Center, Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, NH, United States; NASA Langley Research Center, Hampton, VA, United States; Faculty of Physics, University of Vienna, Boltzmanngasse 5, Vienna, 1090, Austria; Institut für Physik der Atmosphäre, Deutsches Zentrum für Luft- und Raumfahrt (DLR), Oberpfaffenhofen, Germany; Institute for Environment and Climate Research, Jinan University, Guangzhou, China
推荐引用方式 GB/T 7714	Murphy D.M.,Froyd K.D.,Bian H.,et al. The distribution of sea-salt aerosol in the global troposphere[J],2019,19(6).
APA	Murphy D.M..,Froyd K.D..,Bian H..,Brock C.A..,Dibb J.E..,...&Yu P..(2019).The distribution of sea-salt aerosol in the global troposphere.Atmospheric Chemistry and Physics,19(6).
MLA	Murphy D.M.,et al."The distribution of sea-salt aerosol in the global troposphere".Atmospheric Chemistry and Physics 19.6(2019).