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冰川冻土 ›› 2013, Vol. 35 ›› Issue (2): 310-319.doi: 10.7522/j.issn.1000-0240.2013.0037

• 冰冻圈与全球变化 • 上一篇    下一篇

TRMM多卫星降水数据在黑河流域的验证与应用

吴雪娇1,2, 杨梅学1, 吴洪波1,2, 吴玉伟1,2, 王学佳1,2   

  1. 1. 中国科学院 寒区旱区环境与工程研究所 冰冻圈科学国家重点实验室, 甘肃 兰州 730000;
    2. 中国科学院大学, 北京 100049
  • 收稿日期:2012-08-24 修回日期:2013-01-25 出版日期:2013-04-25 发布日期:2013-05-14
  • 作者简介:吴雪娇(1986-), 女, 黑龙江五大连池人, 2012年在中国科学院寒区旱区环境与工程研究所获硕士学位, 现为在读博士研究生, 主要从事寒区旱区遥感与地理信息系统应用研究. E-mail:wxjiao608@126.com
  • 基金资助:

    全球变化研究国家重大科学研究计划项目(2010CB951404); 国家自然科学基金项目(40930526; 41190084; 41201063); 中国科学院"百人计划"项目(29O827B11)资助

Verifying and Applying the TRMM TMPA in Heihe River Basin

WU Xue-jiao1,2, YANG Mei-xue1, WU Hong-bo1,2, WU Yu-wei1,2, WANG Xue-jia1,2   

  1. 1. State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and EngineeringResearch Institute, Chinese Academy of Sciences, Lanzhou Gansu 730000, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2012-08-24 Revised:2013-01-25 Online:2013-04-25 Published:2013-05-14

摘要:

利用黑河流域9个气象台站降水数据, 在不同时间尺度和空间分布上分析了2008-2011年TRMM多卫星降水数据(TMPA 3B43)在黑河流域的适用性.结果表明: 用TMPA估测的年降水量在黑河流域平均高估27.3%, 对上游降水量大的山区估测相对好于降水稀少的黑河下游地区; TMPA与气象站降水量的拟合优度夏季(R2=0.851)高于冬季(R2=0.332); TMPA可以较好反映各测站降水量年变化、 月变化趋势, 用TMPA估测的黑河流域平均年降水量变化趋势为30 mm·(10 a)-1. 黑河流域年降水量体现出随海拔高度的递增规律(11.1 mm·(100 m)-1)、 从东向西降水量逐渐减少的分布以及最大降水高度带出现在上游偏东地区(海拔2 800~4 900 m).

关键词: 多卫星降水数据, 黑河, 祁连山, 时空变化

Abstract:

The Tropical Rainfall Measuring Mission (TRMM) Multi-Satellite Precipitation Analysis (TMPA) 3B43 product is evaluated using the gauge precipitations from 9 weather stations in Heihe River basin at different time steps and spatial distribution. It is found that TMPA-3B43 performing result at time step and spatial scale is not so satisfactory. Regional average annual precipitation evaluated by TMPA is overvalued by 27.3%. At the same temporal resolution, in the humid region, such as the upstream of the Heihe River, TMPA performs better than that in the arid regiones, such as downstream of the river. Specially, during summer the overvalued precipitation is obvious in the downstream of the river. The goodness of fit between TMPA precipitation and observed precipitation is better in summer (R2=0.851) than in winter (R2=0.332). TMPA can express annual and month variation trends of precipitation well. Regional average linear trends of annual mean precipitation is estimated to be 30 mm·(10a)-1 from TMPA. In addition, TMPA estimated data can express the spatial distribution of precipitation in the basin. Annual precipitation increases with height with a rate of 11.1 mm·(100m-1). Precipitation decreases from east to west and the zone of maximum precipitation lies between 2800 to 4 900 m a.s.l.

Key words: Multi-satellite Precipitation Analysis (TMPA), Heihe River basin, Qilian Mountains, temporal and spatial variation

中图分类号: 

  • P426.6