Journal
GEOPHYSICAL RESEARCH LETTERS
Volume 35, Issue 3, Pages -Publisher
AMER GEOPHYSICAL UNION
DOI: 10.1029/2007GL032858
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The serial remote sensing based imageries clearly revealed large scale of upwelling within large regional enhancement of chlorophyll-a (Chl-a) concentration in the southern East China Sea (ECS) after the passage of super typhoon Hai-Tang in July 2005. After the typhoon on 22 July, the upwelling area (<26 degrees C) expanded rapidly to 9146 km 2 on the shelf-break. The large increased upwelling persisted for more than a week. Ocean color images also reveled that high Chl-a concentration of >3.0 mg/m(3) appeared in the shelf region, where the high Chl-a pattern matched the upwelling in terms of location and time. On the other hand, a large offshore SST cooling was also observed mainly to the right of typhoon track on 20 July, it lasted in a period of 2-3 days. This paper provides clear and high-resolution evidence that typhoon significant increased upwelling and Chl-a concentration in the southern ECS.
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