珠峰复杂地表区域能量通量的卫星遥感  

Determinating the Regional Distributions of Surface Heat Fluxes over Heterogeneous Landscape of Mt. Qomolangma Area Using the Satellite Remote Sensing and Field Observations

作　　者：马耀明[1] 王永杰[1] 马伟强[2] 仲雷[1] 苏中波 

机构地区：[1]中国科学院青藏高原研究所,北京100085 [2]中国科学院寒区旱区环境与工程研究所西部气候环境与灾害实验室,甘肃兰州730000 [3]International Institute for Geo-Information Science and Earth Observation,Enschede,the Netherlands

出　　处：《高原气象》2007年第6期1231-1236,共6页Plateau Meteorology

基　　金：中国科学院知识创新工程重要方向项目(KZCX3-SW-231);国家重点基础研究发展规划项目(2005CB422003);国家自然科学基金项目(40520140126);国家自然科学基金委重点项目(40533018)共同资助

摘　　要：珠峰地区地表状况十分复杂,既有冰川(雪山)、高寒草垫,又有裸露山地及荒漠戈壁。如何确定这样复杂下垫面上的地气间的区域能量通量,一直是困扰国内外科学家的难题。本文提出了一个利用卫星遥感资料结合地面观测求取珠峰地区区域地表特征参数(地表反射率与地表温度)、植被参数(NDVI、植被覆盖度、修正的土壤调整植被指数MSAVI及叶面指数LAI)和地表能量通量(净辐射通量、土壤热通量、感热通量及潜热通量)的参数化方案,并讨论了此方案的优缺点。The land surface over Mt. Qomolangma area is very heterogeneous. There are glacier, snow mountains, grassland, exposed mountains and Gobi desert etc. over this area. It is a very difficult issue to determine the regional land surface heat fluxes for the researchers for many years. In this study, a parameterization methodology based on satellite remote sensing data and field observations has been proposed for the determination of the regional distribution of surface parameters（surface reflectance and surface temperature）, vegetation index （Normalized Difference Vegetation Index-NDVI, Modified Soil Adjusted Vegetation Index-MSAVI, vegetation fractional cover Pvand Leaf Area Index-LAD and land surface heat fluxes （net radiation fluxes, soil heat fluxes, sensible heat flux and latent heat flux）. The advantage and the shortcoming of the methodology were also discussed.

关 键 词：珠峰地区 复杂地表 地表特征参数 植被参数 区域地表能量通量 

分 类 号：P412.27[天文地球—大气科学及气象学]