Can Asian dust trigger phytoplankton blooms in the oligotrophic northern South China Sea?

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题名:	Can Asian dust trigger phytoplankton blooms in the oligotrophic northern South China Sea?
作者:	王聖翔;Wang, Sheng-Hsiang;Hsu, N. Christina;Tsay, Si-Chee;Lin, Neng-Huei;Sayer, Andrew M.;Huang, Shih-Jen;Lau, William K. M.
贡献者:	地球科學學院大氣科學學系
关键词:	Aerosols;Air pollution;Asian dust;Atmospheric sciences;biogeochemistry;Biological oceanography;Chemical oceanography;chlorophyll;Dust;dust flux;Earth sciences;Earth, ocean, space;Exact sciences and technology;Geobiology;Geochemistry;Ocean-atmosphere interaction;Particulate matter;Phytoplankton;Remote sensing;SeaWiFS;South China Sea
日期:	2012-03-01
上传时间:	2026-04-21 13:35:10 (UTC+8)
出版者:	Wiley-Blackwell;Washington, DC: Blackwell Publishing Ltd
摘要:	摘要： Satellite data estimate a high dust deposition flux (∼18 g m−2 a−1) into the northern South China Sea (SCS). However, observational evidence concerning any biological response to dust fertilization is sparse. In this study, we combined long‐term aerosol and chlorophyll‐a (Chl‐a) measurements from satellite sensors (MODIS and SeaWiFS) with a 16‐year record of dust events from surface PM10observations to investigate dust transport, flux, and the changes in Chl‐a concentration over the northern SCS. Our result revealed that readily identifiable strong dust events over this region, although relatively rare (6 cases since 1994) and accounting for only a small proportion of the total dust deposition (∼0.28 g m−2 a−1), do occur and could significantly enhance phytoplankton blooms. Following such events, the Chl‐a concentration increased up to 4‐fold, and generally doubled the springtime background value (0.15 mg m−3). We suggest these heavy dust events contain readily bioavailable iron and enhance the phytoplankton growth in the oligotrophic northern SCS. 其他題名： Geophys. Res. Lett 出版者： Washington, DC: Blackwell Publishing Ltd 出版日期： 2012-03 出處： Geophysical Research Letters, 2012-03, Vol.39 (5), p.L05811--n/a 資源來源： Wiley Journals 版權： Copyright 2012 by the American Geophysical Union 版權： 2015 INIST-CNRS 識別號： ISSN: 0094-8276 識別號： ISSN: 1944-8007 識別號： EISSN: 1944-8007 識別號： DOI: 10.1029/2011GL050415 識別號： CODEN: GPRLAJ
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