Inorganic nitrogen and phosphorus in Western European aerosol and the significance of dry deposition flux into stratified shelf waters
Inorganic nitrogen and phosphorus in Western European aerosol and the significance of dry deposition flux into stratified shelf waters
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西欧气溶胶中的无机氮和磷以及分层陆架水域干沉降通量的意义
DOI：
10.1016/j.atmosenv.2021.118391
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发表时间：
2021
影响因子：
5
通讯作者：
White C
中科院分区：
文献类型：
--
作者：
White C
来自气溶胶阶段的氮(N)和磷(P)的干沉降代表了海洋表层水营养物质的潜在来源。为了研究这一沉积途径的意义，在英国英格兰西南部的Penlee Point大气观测站收集了6个月（2015年2月至7月）的气溶胶样本，覆盖了春季开花。分析了样品中的硝酸盐、铵和磷酸盐，并计算了这些营养物的干沉降通量，以评估其对附近表层海水初级生产的潜在影响。气溶胶引起的N和P沉积通量分别为2.7 ~ 620 μmol N m−2d−1和0.16 ~ 1.6 μmol P m−2d−1。气团反轨迹分析表明，最高的N通量与受污染的欧洲气团有关，突出了对气溶胶N含量的显著人为影响。气溶胶通量和水柱浓度的氮磷比表明，该地区的磷沉降不太可能具有显著的生物学意义。相比之下，气溶胶沉降是水柱分层开始后海洋浮游植物新氮的重要偶发性来源。碳固定估算表明，气溶胶- n沉降维持的新初级产量的最大比例为22.4%，比研究平均值高10倍。这些数据表明，在溶解态氮耗竭期间，来自受污染大陆气团的氮沉降增强可以维持表层海洋生物生产力的脉动。
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−2d−1and 0.16–1.6 μmol P m−2d−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.
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影响因子：
5.2
作者：
J. Sharples;C. Moore;Anna Hickman;P. Holligan;J. F. Tweddle;M. Palmer;J. Simpson
通讯作者：
J. Sharples;C. Moore;Anna Hickman;P. Holligan;J. F. Tweddle;M. Palmer;J. Simpson
影响因子：
6.3
作者：
Mingxi Yang;T. Bell;Frances E. Hopkins;V. Kitidis;P. Cazenave;P. Nightingale;M. Yelland;R. Pascal;J. Prytherch;I. Brooks;T. Smyth
通讯作者：
Mingxi Yang;T. Bell;Frances E. Hopkins;V. Kitidis;P. Cazenave;P. Nightingale;M. Yelland;R. Pascal;J. Prytherch;I. Brooks;T. Smyth
比利时海岸大气氮通量：2004-2006 年
DOI：
--
发表时间：
2009
期刊：
影响因子：
--
作者：
Laszlo Bencs;A. Krata;B. Horemans;A. Buczyńska;A. Dirtu;A. Godoi;R. Godoi;S. Potgieter;R. Grieken
通讯作者：
R. Grieken
影响因子：
4.1
作者：
Morvan K. Barnes;G. Tilstone;D. Suggett;C. Widdicombe;J. Bruun;V. Martínez-Vicente;T. Smyth
通讯作者：
Morvan K. Barnes;G. Tilstone;D. Suggett;C. Widdicombe;J. Bruun;V. Martínez-Vicente;T. Smyth
使用气体分段流和芯片实验室技术进行海洋常量营养素测量的实际测量不确定性。
影响因子：
6.1
作者：
Birchill AJ
通讯作者：
Birchill AJ