西北干旱区水面蒸发的遥感研究  

Study on water surface evaporation within arid region of Northwest China with remote sensing

作　　者：陆桂华[1] 康燕霞[1] 吴志勇[1] 闫桂霞[1] 金君良[1] 

机构地区：[1]河海大学水文水资源与水利工程科学国家重点实验室,江苏南京210098

出　　处：《水利水电技术》2009年第8期31-35,共5页Water Resources and Hydropower Engineering

基　　金：水利部公益性行业专项(200701039);"十一五"国家科技支撑计划(2006BAC05B02和2007BAC03A060301)

摘　　要：利用ASTER数据和Penman公式,以黑河流域中下游为研究区域,估算黑河流域的水面蒸发量。结果表明,利用ASTER数据估算的水面蒸发量和实际水面蒸发量之间的绝对误差在1.1 mm/d以内,相对误差绝对值的平均值为8%,可以达到实际应用的精度。利用ASTER数据估算的水面蒸发量具有明显的空间分布特征,对于研究西北干旱区水面蒸发量的空间分布特征具有一定的应用价值。Based on the ASTER data and Penman formula, the water surface evaporation within Heihe River Basin is estimated by taking the mid-lower stream of the basin as the study area. The result shows that the absolute error between the water surface evaporation estimated with the Aster data and the actual evaporation therein is within 1. l mm/d and the average value of the absolute relative error is about 8% , which can reach the precision for the actual application. The evaporation estimated with the ASTER data has a feature of distinct spatial distribution and then has a certain applicable value for the study on the spatial distribu- tion feature of the water surface evaporation within the arid region of the Northwest China.

关 键 词：遥感 P—M模型 水面蒸发 黑河流域 西北干旱区 

分 类 号：P467[天文地球—大气科学及气象学]