Atmospheric fluxes of organic N and P to the global ocean

doi:10.1029/2011GB004277

CORC > 北京大学 > 环境科学与工程学院

	Atmospheric fluxes of organic N and P to the global ocean
	Kanakidou, Maria ; Duce, Robert A. ; Prospero, Joseph M. ; Baker, Alex R. ; Benitez-Nelson, Claudia ; Dentener, Frank J. ; Hunter, Keith A. ; Liss, Peter S. ; Mahowald, Natalie ; Okin, Gregory S. ; Sarin, Manmohan ; Tsigaridis, Kostas ; Uematsu, Mitsuo ; Zamora, Lauren M. ; Zhu, Tong
刊名	global biogeochemical cycles
	2012
关键词	MASS-SPECTROMETRY NITROGEN DEPOSITION PHOSPHORUS CYCLE NORTH-ATLANTIC AEROSOL SECONDARY TROPOSPHERE CARBON EMISSIONS AEROCOM
DOI	10.1029/2011GB004277
英文摘要	The global tropospheric budget of gaseous and particulate non-methane organic matter (OM) is re-examined to provide a holistic view of the role that OM plays in transporting the essential nutrients nitrogen and phosphorus to the ocean. A global 3-dimensional chemistry-transport model was used to construct the first global picture of atmospheric transport and deposition of the organic nitrogen (ON) and organic phosphorus (OP) that are associated with OM, focusing on the soluble fractions of these nutrients. Model simulations agree with observations within an order of magnitude. Depending on location, the observed water soluble ON fraction ranges from similar to 3% to 90% (median of similar to 35%) of total soluble N in rainwater; soluble OP ranges from similar to 20-83% (median of similar to 35%) of total soluble phosphorus. The simulations suggest that the global ON cycle has a strong anthropogenic component with similar to 45% of the overall atmospheric source (primary and secondary) associated with anthropogenic activities. In contrast, only 10% of atmospheric OP is emitted from human activities. The model-derived present-day soluble ON and OP deposition to the global ocean is estimated to be similar to 16 Tg-N/yr and similar to 0.35 Tg-P/yr respectively with an order of magnitude uncertainty. Of these amounts similar to 40% and similar to 6%, respectively, are associated with anthropogenic activities, and 33% and 90% are recycled oceanic materials. Therefore, anthropogenic emissions are having a greater impact on the ON cycle than the OP cycle; consequently increasing emissions may increase P-limitation in the oligotrophic regions of the world's ocean that rely on atmospheric deposition as an important nutrient source.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000308893500002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Environmental Sciences; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; SCI(E); 39; ARTICLE; 26
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/230801]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Kanakidou, Maria,Duce, Robert A.,Prospero, Joseph M.,et al. Atmospheric fluxes of organic N and P to the global ocean[J]. global biogeochemical cycles,2012.
APA	Kanakidou, Maria.,Duce, Robert A..,Prospero, Joseph M..,Baker, Alex R..,Benitez-Nelson, Claudia.,...&Zhu, Tong.(2012).Atmospheric fluxes of organic N and P to the global ocean.global biogeochemical cycles.
MLA	Kanakidou, Maria,et al."Atmospheric fluxes of organic N and P to the global ocean".global biogeochemical cycles (2012).