中文摘要：

以NCEP资料提供的水文气象参数作为输入量。利用4种块体空气动力算法重新计算了动量和热量通量，与相应的NCEP自身提供的湍通量进行了比较分析。发现再计算动量、感热和潜热通量的偏差值随风速增加而增大；在中高风速下。再计算动量通量的相对误差较小，其他情况下再计算动量、感热和潜热通量的相对误差最高能达到50％左右；相对误差一般随纬度的增大而增大，表明两者之间存在不协调性。研究还表明。改进后的NCEP2资料与NCEP1资料相比，这种不协调性并没有得到改善。

英文摘要：

Four kinds of bulk aerodynamic algorithms are used to calculate the turbulent fluxes with the hydrological and meteorological variables of NCEP reanalysis data. Comparisons of the recalculated turbulent flux with NCEP turbulent flux show that the bias of recalculated momentum, sensible and latent heat fluxes increases with increasing wind speed; the relative error of recalculated momentum flux is smaller in the middle-high wind speed range, but the largest relative error of recalculated momentum, sensible and latent heat fluxes are about 50 % in the other conditions. The relative error is increasing while the latitude varies from low to high. These analytical results indicate that there is an incompatibility between the recalculated turbulent flux and NCEP turbulent flux. This study also indicates that the improved NCEP2 data does not have a better compatibility than the NCEP1 data.