气候变化领域集成服务门户(CCPortal): Phytoplankton and cloudiness in the southern ocean

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DOI	10.1126/science.1131779
	Phytoplankton and cloudiness in the southern ocean
	Meskhidze N.; Nenes A.
发表日期	2006
ISSN	0036-8075
起始页码	1419
结束页码	1423
卷号	314 期号:5804
英文摘要	The effect of ocean biological productivity on marine clouds is explored over a large phytoplankton bloom in the Southern Ocean with the use of remotely sensed data. Cloud droplet number concentration over the bloom was twice what it was away from the bloom, and cloud effective radius was reduced by 30%. The resulting change in the short-wave radiative flux at the top of the atmosphere was -15 watts per square meter, comparable to the aerosol indirect effect over highly polluted regions. This observed impact of phytoplankton on clouds is attributed to changes in the size distribution and chemical composition of cloud condensation nuclei. We propose that secondary organic aerosol, formed from the oxidation of phytoplanktonproduced isoprene, can affect chemical composition of marine cloud condensation nuclei and influence cloud droplet number. Model simulations support this hypothesis, indicating that 100% of the observed changes in cloud properties can be attributed to the isoprene secondary organic aerosol.
英文关键词	Aerosols; Clouds; Composition; Computer simulation; Marine pollution; Oceanography; Cloud condensation nuclei; Isoprene secondary organic aerosol; Phytoplankton; Short-wave radiative flux; Marine biology; dissolved organic matter; isoprene; organic matter; biological production; cloud cover; data acquisition; isoprene; phytoplankton; remote sensing; size distribution; aerosol; algal bloom; article; chemical composition; cloud; cloud condensation; mathematical computing; nonhuman; ocean environment; phytoplankton; priority journal; productivity; Aerosols; Atmosphere; Butadienes; Chlorophyll; Hemiterpenes; Oceans and Seas; Oxidation-Reduction; Pentanes; Phytoplankton; Weather; Wind; Southern Ocean
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/244766
作者单位	School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA 30332, United States; School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States; Department of Marine, Earth, and Atmospheric Sciences, North Carolina State University, Raleigh, NC 27695, United States
推荐引用方式 GB/T 7714	Meskhidze N.,Nenes A.. Phytoplankton and cloudiness in the southern ocean[J],2006,314(5804).
APA	Meskhidze N.,&Nenes A..(2006).Phytoplankton and cloudiness in the southern ocean.Science,314(5804).
MLA	Meskhidze N.,et al."Phytoplankton and cloudiness in the southern ocean".Science 314.5804(2006).