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DOI	10.1016/j.atmosenv.2021.118391
	Inorganic nitrogen and phosphorus in Western European aerosol and the significance of dry deposition flux into stratified shelf waters
	White C.; Ussher S.J.; Fitzsimons M.F.; Atkinson S.; Woodward E.M.S.; Yang M.; Bell T.G.
发表日期	2021
ISSN	1352-2310
卷号	261
英文摘要	Dry deposition of nitrogen (N) and phosphorus (P) from the aerosol phase represents a potential source of nutrients to marine surface waters. To investigate the significance of this deposition pathway, aerosol samples were collected from Penlee Point Atmospheric Observatory in SW England, UK, over a 6-month period (February to July 2015) covering the spring bloom. Samples were analysed for nitrate, ammonium and phosphate and the dry deposition flux of these nutrients calculated to assess its potential impact on primary production in nearby surface seawater. Aerosol-derived N and P deposition fluxes ranged from 2.7 to 620 μmol N m−2 d−1 and 0.16–1.6 μmol P m−2 d−1, respectively. Air mass back trajectory analysis indicated that the highest N fluxes were associated with polluted European air masses, highlighting a significant anthropogenic influence on N-content of aerosols. The N:P ratios of aerosol fluxes and water column concentrations indicated that P deposition was unlikely to be biologically significant in the region. In contrast, aerosol deposition was a significant episodic source of new N to marine phytoplankton after the onset of water column stratification. Carbon fixation estimates indicated that the maximum proportion of new primary production sustained by aerosol-N deposition was 22.4%, a factor of ten higher than the study average. These data suggest that enhanced N-deposition from polluted continental air masses could sustain pulses of surface ocean biological productivity during periods of dissolved N depletion. © 2021
关键词	Atmospheric nitrogen Atmospheric phosphorus Biogeochemistry Dry deposition fluxes European pollution Marine Marine productivity
语种	英语
scopus关键词	Binary alloys; Biogeochemistry; Deposition; Marine biology; Nitrogen; Nutrients; Phosphorus; Phytoplankton; Atmospheric nitrogen; Atmospheric phosphorus; Dry deposition fluxes; European pollution; Inorganic nitrogen; Marine; Marine productivity; N-deposition; Primary production; Water columns; Aerosols; ammonia; nitrogen; phosphate; phosphorus; sea water; surface water; aerosol; air mass; dissolved inorganic nitrogen; dry deposition; inorganic nitrogen; inorganic phosphorus; phytoplankton; primary production; shelf sea; stratification; aerosol; air pollution; Article; Atlantic Ocean; atmospheric deposition; biogeochemistry; carbon fixation; continental shelf; controlled study; dry deposition; England; English Channel; inorganic nutrient; marine environment; nitrogen concentration; nitrogen deposition; nutrient concentration; phytoplankton; productivity; sea surface waters; spring; stratification; time series analysis; United Kingdom; water transport; Western European; wind speed; England; United Kingdom
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248319
作者单位	Biogeochemistry Research Centre, School of Geography, Earth and Environmental Science, University of Plymouth, Drake Circus, Plymouth, PL4 8AA, United Kingdom; Plymouth Marine Laboratory, Prospect Place, Plymouth, PL1 3DH, United Kingdom
推荐引用方式 GB/T 7714	White C.,Ussher S.J.,Fitzsimons M.F.,et al. Inorganic nitrogen and phosphorus in Western European aerosol and the significance of dry deposition flux into stratified shelf waters[J],2021,261.
APA	White C..,Ussher S.J..,Fitzsimons M.F..,Atkinson S..,Woodward E.M.S..,...&Bell T.G..(2021).Inorganic nitrogen and phosphorus in Western European aerosol and the significance of dry deposition flux into stratified shelf waters.ATMOSPHERIC ENVIRONMENT,261.
MLA	White C.,et al."Inorganic nitrogen and phosphorus in Western European aerosol and the significance of dry deposition flux into stratified shelf waters".ATMOSPHERIC ENVIRONMENT 261(2021).