Antarctic sea ice region as a source of biogenic organic nitrogen in aerosols.

Antarctic sea ice region as a source of biogenic organic nitrogen in aerosols.
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DOI:
10.1038/s41598-017-06188-x
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发表时间:
2017-07-20
期刊:
影响因子:
4.6
通讯作者:
Simó R
Simó R
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Dall'Osto M;Ovadnevaite J;Paglione M;Beddows DCS;Ceburnis D;Cree C;Cortés P;Zamanillo M;Nunes SO;Pérez GL;Ortega-Retuerta E;Emelianov M;Vaqué D;Marrasé C;Estrada M;Sala MM;Vidal M;Fitzsimons MF;Beale R;Airs R;Rinaldi M;Decesari S;Cristina Facchini M;Harrison RM;O'Dowd C;Simó R

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气候变暖影响着海冰的发育和分布,但目前极地生态系统通过大气变化反馈气候的证据很少。通过南极洲附近南大洋的大气和海洋协同测量,我们提出了证据,表明海冰和受海冰影响的海洋的微生物群是以前未知的大气有机氮的重要来源,包括低分子量烷基胺。鉴于氮化合物在气溶胶形成、生长和中和中的关键作用,我们的研究结果呼吁在将海洋生态系统与南大洋气溶胶介导的气候影响联系起来的模拟工作中增加化学和来源的多样性。
Climate warming affects the development and distribution of sea ice, but at present the evidence of polar ecosystem feedbacks on climate through changes in the atmosphere is sparse. By means of synergistic atmospheric and oceanic measurements in the Southern Ocean near Antarctica, we present evidence that the microbiota of sea ice and sea ice-influenced ocean are a previously unknown significant source of atmospheric organic nitrogen, including low molecular weight alkyl-amines. Given the keystone role of nitrogen compounds in aerosol formation, growth and neutralization, our findings call for greater chemical and source diversity in the modelling efforts linking the marine ecosystem to aerosol-mediated climate effects in the Southern Ocean.
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