Phytoplankton bloom and sea surface cooling induced by Category 5 Typhoon Megi in the South China Sea: direct multi-satellite observations

Xiaoyan Chen; Delu Pan; Xianqiang He; Yan Bai; Difeng Wang

doi:10.1117/12.897853

13 October 2011 Phytoplankton bloom and sea surface cooling induced by Category 5 Typhoon Megi in the South China Sea: direct multi-satellite observations

Xiaoyan Chen, Delu Pan, Xianqiang He, Yan Bai, Difeng Wang

Author Affiliations +

Proceedings Volume 8175, Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2011; 817519 (2011) https://doi.org/10.1117/12.897853
Event: SPIE Remote Sensing, 2011, Prague, Czech Republic

Abstract

This study investigated upper ocean responses to Category 5 Typhoon Megi, the most intense typhoon in 2010, using MODIS ocean color data, GHRSST L4 data, sea level anomaly data and sea surface wind data. Remarkable sea surface cooling(~6-7°C) with large area was observed mainly to the right side of typhoon track on 22 October, which was mainly attributed to the vertical mixing and upwelling induced by typhoon Megi. However, the sea ace temperature along the typhoon track increased after the landfall of typhoon and then decreased again. Two cold water patches were observed on 29 October, which were well coincident with two cores with maximum SLA decline. Therefore, we attributed the second cooling along the typhoon track to cyclonic eddies which were triggered by typhoon Megi. On the other hand, Strong upwelling was induced by typhoon Megi, which provided perfect conditions for the growth of phytoplankton and caused a significant phytoplankton bloom in the SCS. Relative to historical levels over the same period, the maximum chlorophyll a concentration increased about 20-30 times.

Citation Download Citation

Xiaoyan Chen, Delu Pan, Xianqiang He, Yan Bai, and Difeng Wang "Phytoplankton bloom and sea surface cooling induced by Category 5 Typhoon Megi in the South China Sea: direct multi-satellite observations", Proc. SPIE 8175, Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2011, 817519 (13 October 2011); https://doi.org/10.1117/12.897853

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