科研之友
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摘要
Despite increases in global temperature, studies have observed a decrease in evaporation in the Northern Hemisphere. To examine whether a decrease in pan evaporation also indicates decreased evapotranspiration (ET), ET rates were modelled in a geographic information system by integrating climatic data and water-balance data from 1997 to 2007. Average monthly ET values were compared with National Climatic Data Center pan-evaporation (PE) data. PE and ET were significantly related, but the degree of significance and the direction of the relation (positive or negative) varied across eco-divisions and seasons. Thus, decreased pan evaporation does not necessarily imply that ET will decrease as well.
- 出版日期2013-5-1
