GLOBAL TERRESTRIAL EVAPOTRANSPIRATION FROM OPTICAL AND MICROWAVE SATELLITE OBSERVATIONS

摘要

Terrestrial actual evapotranspiration (ET) is an importantrncomponent of the terrestrial water cycle and links thernhydrological, energy, and carbon cycles. Considering therndiverse landscapes and multi-climatic features, a hybridrnremotely sensed ET estimation model named ETMonitorrnwas developed to estimate the daily actualrnevapotranspiration globally at a spatial resolution of 1 km.rnThe ETMonitor model uses a variety of biophysicalrnparameters derived from microwave and optical remoternsensing observations as input data to estimate the dailyrnET for all sky conditions. This dataset provides importantrnsupport to the large-scale evaluation of the environment,rnand some preliminary applications were conducted forrnregional- to global-scale mapping and monitoring ofrnwater consumption and drought severity.