太平洋海域海气热通量地理分布和时间变化的研究

应用美国宇航局Goddard地球观测系统四维资料同化系统计算和分析了太平洋海域感热通量和潜热通量随时间的变化规律和地理分布特征.研究结果表明,太平洋西北部海域热通量有明显的季节性变化,其余海域这种现象不明显.在太平洋海域总是存在潜热通量最高值区域,而感热通量除冬季20°N以北海域数值稍高外,其余海域数值都很小,没有出现最高值区域.纬度不同热通量随经度的变化规律不同,经度不同,热通量随纬度的分布规律也不同,同时各断面热通量随纬度的分布趋势随季节而改变.

Research of the geographical distributions and temporal variations of air-sea heat fluxes over the Pacific

The temporal variations and geographical distributions of sensible and Latent heat fluxes over the Pacific were calculated and analyzed by using the Goddard Earth Observing System(GEOS)-four-dimensional Data Assimilation System(DAS).The calculated results show that the heat flux over the northwestern Pacific varies obviously with seasons,but over the other ocean areas of the Pacific there are no such phenomena.There is always the highest value region of latent heat fluxes over the Pacific,but the values of sensible heat fluxes are often very small except over the ocean area north of 20°N and there is no highest value region at all.The latent heat fluxes have different distributions with longitude in different latitudes.And the variation of latent heat fluxes with latitude is not the same in different longitude and also it varies with seasoivs.