Changes of pan evaporation and reference evapotranspiration in the Yangtze River basin
Changes of pan evaporation and reference evapotranspiration in the Yangtze River basin
复制标题
DOI：
10.1007/s00704-006-0276-y
复制
发表时间：
2007-09
影响因子：
3.4
通讯作者：
Yuefeng Wang;Yuefeng Wang;T. Jiang;O. Bothe;K. Fraedrich
中科院分区：
文献类型：
--
作者：
Yuefeng Wang;Yuefeng Wang;T. Jiang;O. Bothe;K. Fraedrich
利用1961 ~ 2000年长江流域115个测站的逐日蒸发皿蒸发量和参考蒸散量资料，分析了长江上、中下游地区蒸发皿蒸发量和参考蒸散量的变化趋势。蒸发皿蒸发量和参考蒸散量在夏季减少，贡献最大的年度总减少。这种趋势在长江中下游比在长江上游更为显著。减少的趋势可能与净辐射和风速的趋势有关。并与大气环流模式（GCM，ECHAM 5/MPI-OM）模拟的世纪蒸发量进行了比较。此外，大气环流模式的实际蒸发量减少，与空气温度的总体增加形成对比。
For the upper and mid-lower Yangtze River basin trends of pan evaporation and reference evapotranspiration are analysed from 1961 to 2000 using daily data of 115 stations. Both pan evaporation and reference evapotranspiration decreased during the summer months contributing most to the total annual reduction. This trend is more significant in the mid-lower than in the upper Yangtze reaches. The decreasing trends can be associated with trends in net radiation and wind speed. Results are compared with the 20th century evaporation simulated by the general circulation model (GCM, ECHAM5/MPI-OM). Also the GCM’s actual evaporation decreases contrasting an overall increase in air temperature.