卫星遥感结合地面观测确定珠穆朗玛峰地区复杂地表区域热通量

项目名称： 卫星遥感结合地面观测确定珠穆朗玛峰地区复杂地表区域热通量

项目编号： No.41275010

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 天文学、地球科学

项目作者： 马耀明

作者单位： 中国科学院青藏高原研究所

项目金额： 96万元

中文摘要： 喜马拉雅山的珠穆朗玛峰地区有着多样而独特的自然条件和复杂多样的下垫面、脆弱而敏感的生态环境。特别是该地区的高海拔导致其与自由对流层大气最为接近，使得其成为研究复杂地表与大气间能量交换的理想区域。本项目将利用不同分辨率的卫星遥感资料（主要是MODIS资料、Landsat-5 TM 资料和ASTER 资料）和珠峰地区台站观测资料，采用综合分析和参数化相结合的方法，推算得到珠峰地区区域上地表特征参数（地表反射率与地表温度）、植被参数（NDVI、植被覆盖度和修正的土壤调整植被指数MSAVI 等）、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）及地面加热场的区域分布图像及季节变化和年际变化特征，以期达到初步揭示地表状况十分复杂的珠峰地区地气间能量交换的实质的目的，进而对研究整个喜马拉雅山区和青藏高原的天气和气候变化有所贡献。

中文关键词： 珠穆朗玛峰地区；复杂地表；区域地表热通量；卫星遥感；地面观测

英文摘要： The high altitude over Mt.Qomolangma(Mt.Everest) area led to the region closest to the free troposphere and making the region is an exchange ideal area of the mass and energy for the ground atmosphere and the free atmosphere. Mt.Qomolangma's complex terrain and strong solar radiation make the climate, atmospheric circulation systems, and environmental characteristics over this area being very special. It is an ideal laboratory for the study of energy exchange between atmopshere and heterogenous landscape over there. The distribution of regional land surface variables (surface albedo and surface temperature), vegetation variables (NDVI, vegetation coverage and Modified Soil Adjusted Vegetation Index-MSAVI),land surface heat fluxes (net radiation heat flux, soil heat flux, sensible heat flux and latent heat flux) and surface heating field and their seasonal and annual variations over heterogeneous landscape of the Mt.Qomolangma area will be determinated by using the satellite data( MODIS, Landsat-TM and ASTER) and in-situ data.The goal of undersatanding the essence of energy exchange between heterogenous landscape and atmosphere over the Mt.Qomolangma area can be achieved through this process. Therefore it can be done some contributions to the study of weather and climatic change over Himalayan region even the wh

英文关键词： Qomolangma area；heterogenous；regional land surface heat fluxes；remote sensing；in-situ observation