El Niño-related offshore phytoplankton bloom events around the Spratley Islands in the South China Sea

Osamu Isoguchi, Hiroshi Kawamura, Ku Yaacob Ku-Kassim

研究成果: Article査読

8 被引用数 (Scopus)

抄録

Satellite chlorophyll-a (Chl-a) observations reveal offshore phytoplankton bloom events with high Chl-a (>1 mg m-3) spreading over 300 km off the coasts around the Spratley Islands in the South China Sea (SCS) during the spring of 1998. The bloom entails anomalous wind jet and sea surface temperature (SST) cooling, suggesting that the wind jet-induced mixing and/or offshore upwelling bring about the cooling and the bloom through the supply of nutrient-rich waters into the euphotic zone. The strong wind jet is orographically formed responding to shifts in wind direction over the eastern SCS. The wind shift is connected with the Philippine Sea anomalous anticyclone that is established during El Niño, indicating the El Niño-related offshore bloom. The long-term reanalysis winds over the eastern SCS demonstrates that wind jet formation and associated offshore cooling/ bloom are expected to occur in most cases of the subsequent El Niño years.

本文言語English
論文番号L21603
ページ(範囲)1-4
ページ数4
ジャーナルGeophysical Research Letters
32
21
DOI
出版ステータスPublished - 2005 11月 16

ASJC Scopus subject areas

  • 地球物理学
  • 地球惑星科学(全般)

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