CMADS Verification
CMADS+SWAT Verification in Xinjiang

  In the northwest China, the terrain is complex and the environment is terrible so that the levelof perennial meteorological observation is limited, and the observation data are lacking especially in highaltitude mountainous area. Reanalysis datasets (products) based onmeteorological satellite, numerical simulation, combined with rigorous screening of the measured data. Due to its high temporal resolution, higher reliability, reanalysis datasets are widely used in research work. In thispaper, we choose a typical alpine mountain watersheds located in the northwestas the object of study, and three representative reanalysis meteorological dataproducts (CMADS, ITPCAS and TRMM 3B42) are used to simulate the precipitation to drive the distributed hydrological model SWAT, and compare the results ofthe model simulation with the runoff data measured by the hydrological station.The simulated results of CMADS dataset driven hydrological model are the arebetter than others, and the ENS efficiency coefficient of month and day is reached 0.53, 0.71.The ITPCAS and TRMM 3B42 datasets’resultis unsatisfactory. We discover that because of being based on TRMM 3B42, ITPCAS have the same result in modeling precipitation as TRMM 3B42 in Minfeng station, west China.

Fig.1 Observed monthly runoffs  VS simulated data from CMADS, ITPCAS andTRMM 3B42 in ** hydrologic Station

Fig2 Monthly time series ofprecipitation from gauge station and three datasets (CMADS, ITPCAS, TRMM 3B42) for 2008-2013

Table 1 Evaluation of runoff simulation from Three Precipitation Datasets

Table2  Statistical imformation of Monthly time series of precipitation from Minfeng gauge station and three databases for 2008-2013

          Validation by Dr.Jun Liu

Director:Prof. Shiyin Liu & Dr.Xianyong Meng