中文摘要：

评价了最新发布的TRMM 3B43V7降水数据在赣江流域19个水文站集水区域的精度,然后采用新构建的两参数月水量平衡模型—WBM-DP（Water Balance Model With Double Parameters）模拟了各水文站月径流过程,并与TRMM 3B43V6进行了比较。结果表明：就面雨量而言,在各集水区域,3B43V7相对比较稠密的地面雨量站网观测数据的系统误差幅度在11.0%以内,确定性系数不低于0.86。3B43V7对19个水文站月径流模拟的水量相对误差均值为-8.6%,确定性系数均值为0.84。与3B43V6相比,3B43V7的精度得到进一步提高,对多个水文站月径流的模拟效果改善明显。

英文摘要：

This paper evaluates the accuracy of recently-released data of rainfall TRMM 3B43V7 over 19 catchments in the Gan river basin, and describes simulations of monthly runoff process in these catchments during 2003-2009, using a new water balance model with double parameters （WBM-DP）, with a comparison to the simulations of rainfall 3B43V6. Results suggested that in all the catchments, the systematic relative error （RE） of rainfall 3B43V7 was within ± 11.0% and its determination coefficient （DC） was not lower than 0.86. Using this rainfall, the mean RE and DC of simulated monthly runoff over all the catchments were -8.6% and 0.84 respectively. In comparison with 3B43V6, the accuracy of rainfall 3B43V7 is improved and the corresponding runoff simulations in several catchments are considerably better.