关键词： AMSR-E 土壤湿度 ECWMF NECP
AMSR-E Soil Moisture Compared with ECWMF and NECP Soil Moisture Li Ang Lu Qifeng Yang Xiaofeng Zhang Jianwei
(1.Nanjing University of Information Science&Technology,Nanjing 210044,China; 2.National Satellite Meteorological Center,Beijing 100081,China)
Soil moisture is an important environmental factor and procedure parameter in fields of meteorology and climatology.Global and sequential products of satellite retrieval soil moisture were provided by AMSR-E.In this study,ECWMF and NECP reanalysis data and AMSR-E soil moisture were compared in time and space,the AMSR-E soil moisture was verified with consistency evaluation of three methods which mentioned above and the AMSR-E,ECWMF and NECP soil moisture in China were confirmed by observation data,such as soil moisture and precipitation.The result indicated that AMSR-E,ECWMF and the NECP soil moisture spatial distribution characteristics in globe or China have good consistency,but AMSR-E soil moisture was smaller than the others,especially when the value of the AMSR-E was low,the gap was bigger between them;Besides,the soil moisture and precipitation have perfect corresponding relation and there was better the corresponding relation between ECWMF and NECP relatively;Compared with the soil moisture of observation stations,ECWMF and NECP soil moisture was larger and AMSR-E soil moisture was smaller.Furthermore,the root mean square errors of ECWMF,NECP and observation station were all smaller than AMSR-E during 1 645 times data which acquired on a national scale.
Keywords： NECP Soil Moisture ECWMF AMSR-E