GSTDTAP  > 气候变化
DOI10.1002/2017GL076410
The Influence of Air-Sea Fluxes on Atmospheric Aerosols During the Summer Monsoon Over the Tropical Indian Ocean
Zavarsky, Alex1; Booge, Dennis1; Fiehn, Alina1,2; Kruger, Kirstin2; Atlas, Elliot3; Marandino, Christa1
2018-01-16
发表期刊GEOPHYSICAL RESEARCH LETTERS
ISSN0094-8276
EISSN1944-8007
出版年2018
卷号45期号:1页码:418-426
文章类型Article
语种英语
国家Germany; Norway; USA
英文摘要

During the summer monsoon, the western tropical Indian Ocean is predicted to be a hot spot for dimethylsulfide emissions, the major marine sulfur source to the atmosphere, and an important aerosol precursor. Other aerosol relevant fluxes, such as isoprene and sea spray, should also be enhanced, due to the steady strong winds during the monsoon. Marine air masses dominate the area during the summer monsoon, excluding the influence of continentally derived pollutants. During the SO234-2/235 cruise in the western tropical Indian Ocean from July to August 2014, directly measured eddy covariance DMS fluxes confirm that the area is a large source of sulfur to the atmosphere (cruise average 9.1 mu mol m(-2) d(-1)). The directly measured fluxes, as well as computed isoprene and sea spray fluxes, were combined with FLEXPART backward and forward trajectories to track the emissions in space and time. The fluxes show a significant positive correlation with aerosol data from the Terra and Suomi-NPP satellites, indicating a local influence of marine emissions on atmospheric aerosol numbers.


Plain Language Summary The air-sea flux trace gases and their transformation to aerosols and cloud condensation nuclei may be fundamental to cloud formation in the marine environment. Clouds and aerosol have an important influence on the radiative balance of the earth. The local coupling of air-sea fluxes and the formation of aerosols and clouds over the ocean is still highly uncertain. This study combines directly measured air-sea fluxes with satellite aerosol remote sensing. It is a novel, interdisciplinary approach where results from air-sea gas transfer are combined with atmospheric chemistry satellite remote sensing using meteorological transport models. Our results strongly support a local influence of marine-derived aerosol precursors on cloud condensation nuclei and aerosol optical depth above the tropical Indian Ocean.


领域气候变化
收录类别SCI-E
WOS记录号WOS:000423431800047
WOS关键词CLOUD CONDENSATION NUCLEI ; PARTICLE DISPERSION MODEL ; MOBILE PLATFORMS ; MOUNT KILAUEA ; PHYTOPLANKTON ; DIMETHYLSULFIDE ; EXCHANGE ; EXPONENT ; SULFIDE ; CLIMATE
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/27857
专题气候变化
作者单位1.GEOMAR Helmholtz Ctr Ocean Res Kiel, Kiel, Germany;
2.Univ Oslo, Dept Geosci, Oslo, Norway;
3.Rosenstiel Sch Marine & Atmospher Sci, Miami, FL USA
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Zavarsky, Alex,Booge, Dennis,Fiehn, Alina,et al. The Influence of Air-Sea Fluxes on Atmospheric Aerosols During the Summer Monsoon Over the Tropical Indian Ocean[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(1):418-426.
APA Zavarsky, Alex,Booge, Dennis,Fiehn, Alina,Kruger, Kirstin,Atlas, Elliot,&Marandino, Christa.(2018).The Influence of Air-Sea Fluxes on Atmospheric Aerosols During the Summer Monsoon Over the Tropical Indian Ocean.GEOPHYSICAL RESEARCH LETTERS,45(1),418-426.
MLA Zavarsky, Alex,et al."The Influence of Air-Sea Fluxes on Atmospheric Aerosols During the Summer Monsoon Over the Tropical Indian Ocean".GEOPHYSICAL RESEARCH LETTERS 45.1(2018):418-426.
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