TRMM卫星降水数据在淮河息县流域径流模拟的适用性

Journal of Water Resources Research 水资源研究, 2017, 6(2), 148-155 Published Online April 2017 in Hans. /journal/jwrr https:///10.12677/jwrr.2017.62018

文章引用: 张鹏举, 江善虎, 陈宏新, 赵敏, 李敏娟. TRMM 卫星降水数据在淮河息县流域径流模拟的适用性[J]. 水资源研究,

Hydrological Simulation Capability of TRMM Satellite Precipitation Data in Xixian Catchment, Huai River Basin

Pengju Zhang 1, Shanhu Jiang 1,2, Hongxin Chen 1, Min Zhao 1, Minjuan Li 1

1

College of Hydrology and Water Resources, Hohai University, Nanjing Jiangsu 2

State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing Jiangsu

Received: Mar. 25th , 2017; accepted: Apr. 11th , 2017; published: Apr. 14th , 2017

Abstract Satellite precipitation products with high temporal-spatial resolution provide strong data support for modern hydrological simulation and forecast. Combining with the ground observation data, this study aims to evaluate the accuracy and hydrological simulation capability of the latest Tropical Rainfall Measuring Mission (TRMM) satellite precipitation product (TRMM 3B42RT and 3B42V7) in mid-latitude Xixian catchment, Huai River ba-sin. The Gridded Xinanjiang model was used for streamflow simulation. The results show that, TRMM satellite precipitation has different extent overestimation of the benchmark precipitation, with BIAS of 25.25% for 3B42RT and 14.88% for 3B42V7; in the absolute error sense, TRMM satellite precipitation has large values; for the correlation sense, TRMM satellite precipitation has good values more than 0.75. At the monthly time scale, the precision of the TRMM satellite precipitation has greatly been improved in terms of declined ABIAS values and increased CC values. With the model parameters first benchmarked by the rain gauge data, the behavior of the streamflow simulation from TRMM 3B42RT is poor, but it still could characterize the diurnal variation of the streamflow. When the model parameters were recalibrated by each individual satellite data, the perfor-mance of TRMM 3B42RT was significantly improved. Compared with the TRMM 3B42RT, the TRMM 3B42V7 has good streamflow simulations in both parameter calibration scenes, with NSCE values more than 0.62, BIAS values between ±10.48% and CC values more than 0.79, which demonstrated good hydrological simulation utility of the TRMM data. The present work will hopefully be a reference for future hydrological utilizations of TRMM and GPM (Global Precipitation Measurement) satellite precipitation products. Keywords

TRMM Satellite Precipitation, Precision Evaluation, Hydrological Simulation, Xinanjiang Model

TRMM 卫星降水数据在淮河息县流域径流模拟的适用性

张鹏举1，江善虎1,2，陈宏新1，赵 敏1，李敏娟1

作者简介：张鹏举(1995-)，男，本科生，主要从事水文过程模拟方面研究。