The Mean And Seasonal Characters Of Sea Surface Fluxes In The China Adjacent Seas

Based on the Ocean-Atmosphere Heat,Momentum and fresh water Climatological Flux Atlas of Southampton Oceanography Center,the climatology and seasonal variation characters of the heat,fresh water flux and the wind stress curl in China adjacent seas,which is computed from the momentum flux data,are analyzed and studied by EOF method and statistical methods. And the East Japan Sea,East China Sea and South China Sea are discussed respectively.The results show that there are heat loss in Japan Sea and East China Sea by yearly average,respectively with -27Wm-2 and -25Wm-2. South China Sea gain heat by yearly average with 58Wm-2. A maximum of heat loss exists in Kuroshio area and it can get -330 Wm-2 in December. Another maximum of heat loss existing in Japan Sea is Tsushima Current area with -270Wm-2 in December. The seasonal variations of heat flux are similar in Japan and East China Sea. But the character in South China Sea is different and it gets the maximum of heat gain in April. Compared with former study,because the spatial and the temporal resolution of the data sets are different and the different bulk formulas are used to calculate the fluxes,the values of fluxes are different. But the seasonal variation processes of heat flux are similar as well as the space pattern in those studies. The variations of wind stress curl are dominated by the monsoons in Japan Sea and South China Sea and the value is stronger in winter than in Summer. As to the fresh water,it is fresh water loss-in Japan and East China Sea with annual - 267mm and - 391mm respectively. South China Sea gains fresh water with annual 222mm. There is a long and narrow maximum center off the West-northern Kalimantan coast in Indonesia,which gets 192mm in January and 1260mm yearly. At last cros-correlation analyses are computed between fluxes and the SST and wind speed.