摘要
空气动力学阻抗的准确估算是目前卫星反演地表显热通量的关键,为了准确反演藏东南地区的地表显热通量,利用2013年6月10日西藏林芝地区的草地、麦田、河滩、林地阴坡和阳坡5种下垫面的边界层观测数据,分析常用的Thom_1975,Thom_1977和Choudhury空气动力学阻抗估算模型的适应性。结果表明:林地阴坡Choudhury模型估算值与涡动相关测量的结果有较好的一致性,其他下垫面建议采用Thom(1975)模型。
The accurate estimation ofaerodynamic resistanceis the key tosatellite retrieval of surfacesensible heat flux at present. In order toaccurately retrieve surface heat fluxin the Southeast Tibet, the validity of the commonly usedaerodynamic resistance models which are Thom（1975, 1977） and Choudhurymodels are analyzed by using the boundary layer observation data of grass, wheat, beach, forest shady and sunny slope in Linzhi on June 10, 2013. The results show that the estimated values of Choudhury model are consistent with the results of eddy correlation measurements on the forest shady slop and Thom（1975） model is recommended for the other underlying surfaces.
出处
《长江流域资源与环境》
CAS
CSSCI
CSCD
北大核心
2016年第4期606-612,共7页
Resources and Environment in the Yangtze Basin
基金
公益性行业(气象)科研专项(GYHY201206041和GYHY201406001)~~
关键词
空气动力学阻抗
估算模型
适应性
西藏
aerodynamic resistance
estimation model
adaptability
Tibet
