In situ data are employed to evaluate five gridded surface heat flux datasets over the South China Sea. The surface heat budgets for these gridded datasets are computed. The authors find that the gridded datasets tend...In situ data are employed to evaluate five gridded surface heat flux datasets over the South China Sea. The surface heat budgets for these gridded datasets are computed. The authors find that the gridded datasets tend to underestimate both the solar radiation and sensible heat flux in general, while the latent heat fluxes are close to the observations, except for that of NOC unadjusted version 2 (NOC2), which overestimates both the latent and sensible heat flux. The underestimation of solar radiation also indicates that the gridded datasets might underestimate the surface heat budget. The net surface heat flux of the five gridded datasets is always positive. However, the net surface heat flux of COADS, NOC1, NOC2, and OAFlux, in the range 48-56 W m-2, is around twofold more than that of NOC1 a (22 W m-2). The budget for NOC2 is smaller than that of NOC1 and OAFlux, by approximately 49 W m-2, because of the large release of latent heat flux. Based on the comparison, the authors believe that the net surface heat flux over the South China Sea should be higher than 56 W m-2, which is significantly larger (around 10%-20%) than previous estimations.展开更多
基金supported by the National Key Basic Research Program of China[grant number 2013CB956204]the National Natural Science Foundation of China[grant number 41576025],[grant number 41275084],[grant number 41075059]the Strategic Priority Research Program entitled‘Western Pacific Ocean System:Structure,Dynamics and Consequences’of the Chinese Academy of Sciences[grant number XDA11010304]
文摘In situ data are employed to evaluate five gridded surface heat flux datasets over the South China Sea. The surface heat budgets for these gridded datasets are computed. The authors find that the gridded datasets tend to underestimate both the solar radiation and sensible heat flux in general, while the latent heat fluxes are close to the observations, except for that of NOC unadjusted version 2 (NOC2), which overestimates both the latent and sensible heat flux. The underestimation of solar radiation also indicates that the gridded datasets might underestimate the surface heat budget. The net surface heat flux of the five gridded datasets is always positive. However, the net surface heat flux of COADS, NOC1, NOC2, and OAFlux, in the range 48-56 W m-2, is around twofold more than that of NOC1 a (22 W m-2). The budget for NOC2 is smaller than that of NOC1 and OAFlux, by approximately 49 W m-2, because of the large release of latent heat flux. Based on the comparison, the authors believe that the net surface heat flux over the South China Sea should be higher than 56 W m-2, which is significantly larger (around 10%-20%) than previous estimations.