Seasonal and spatial distributions of phytoplankton biomass associated with monsoon and oceanic environments in the South China Sea

作     者：GAO Shan WANG Hui 

作者机构：Chinese Academy of Meteorological Sciences China Meteorological Administration Beijing 100081 China College of Environmental Science and Engineering Ocean University of China Qingdao 266100 China National Marine Environmental Forecasting Center State Oceanic Administration Beijing 100081 China 

出 版 物：《Acta Oceanologica Sinica》 (海洋学报（英文版）)

年 卷 期：2008年第27卷第6期

页      面：17-32页

核心收录：

学科分类：07[理学] 070601[理学-气象学] 09[农学] 0903[农学-农业资源与环境] 0706[理学-大气科学] 0713[理学-生态学] 

基　　金：The National Natural Science Foundation of China from key programunder contact No.40531006 The National Natural Science Foundation of China from general programunder contact No.40576012 

主　　题：phytoplankton biomass chlorophyll-a monsoon upwelling South China Sea 

摘      要：Seasonal variations of phytoplankton/chlorophyll-a （Chl-a） distribution, sea surface wind, sea height anomaly, sea surface temperature and other oceanic environments for long periods are analyzed in the South China Sea （SCS）, especially in the two typical regions off the east coast of Vietnam and off the northwest coast of Luzon, using remote sensing data and other oceanographic data. The results show that seasonal and spatial distributions of phytoplankton biomass in the SCS are primarily influenced by the monsoon winds and oceanic environments. Off the east coast of Vietnam, Chl-a concentration is a peak in August, a jet shape extending into the interior SCS, which is associated with strong southwesterly monsoon winds, the coastal upwetling induced by offshore Ekman transport and the strong offshore current in the western SCS. In December, high Chl-a concentration appears in the upwelling region off the northwest coast of Luzon and spreads southwestward. Strong mixing by the strong northeasterly monsoon winds, the cyclonic circulation, southwestward coastal currents and river discharge have impacts on distribution of phytoplankton, so that the high phytoplankton biomass extends from the coastal areas over the northern SCS to the entire SCS in winter. These research activities could be important for revealing spatial and temporal patterns of phytoplankton and their interactions with physical environments in the SCS.