Model calculation of air-sea heat fluxes over ocean area near Chinawith GEOS DAS system

The sensible and latent heat fluxes over the ocean area near China were calculated and analyzed by using the (ioddard Earth Observing System (GE0S)-four-dimensional Data Assimilation System (DAS).The calculated resuits showed that the sensible heat flux had its large value in winter and autumn,small value in spring and summer over the ocean area near China.In winter,the sensible heat flux increased distinctly with latitude,and its isolines were very crowded.Over the ocean area east of Taiwan Province and south of Japan,the direction of isoline was from southwest to northeast.In the South China Sea the sensible heat flux was lower than that of surrounding ocean areas,and its isoline was distributed into a type of an inverted trough.In autumn and winter,the maximum center of latent heat flux appeered over the ocean area northeast of Taiwan Province and south and southeast of Jepan,meanwhile,the isoline was in the direction of southwest to northeast.In spring and summer,the latent heat flux had minimum value in the Huanghai Sea.At the same time,the maximum value center of latent heat flux appeared over the ocean area south of Japan in spring.