Spatiotemporal patterns of evapotranspiration in response to multiple environmental factors simulated by the Community Land Model

摘要: Spatiotemporal patterns of evapotranspiration (ET) over the period from 1982 to 2008 are investigated and attributed multiple environmental factors using Community Land Model version 4 (CLM4). Our results show that CLM4 captures spatial distribution interannual variability ET well when compared observation-based estimates. We find climate dominates predicted in ET. Elevated atmospheric CO2 concentration also plays an important role modulating trend most land areas, replaces function as dominant factor controlling changes North America, South America Asia regions. Compared effect concentration, roles other such nitrogen deposition, use change aerosol deposition less pronounced regionally dependent. The contribution is third for trends Europe, while it has smallest impact As a component terrestrial water cycle, our suggest like elevated CO2, depositions, change, addition climate, could have significant on future projections resources cycle dynamics at global regional scales.