卫星遥感结合地面资料对区域表面动量粗糙度的估算  

Estimation of Area Roughness Length for Momentum Using Remote Sensing Data and Measurements in Field

作　　者：贾立[1] 王介民[1] MassimoMenenti 

机构地区：[1]中国科学院兰州高原大气物理研究所,兰州730000 [2]荷兰陆面,土壤和水综合研究中心

出　　处：《大气科学》1999年第5期632-640,T002,共10页Chinese Journal of Atmospheric Sciences

基　　金：国家自然科学基金

摘　　要：利用地面湍流观测资料估算了黑河实验区几个典型下垫面的局地地表动量粗糙度， 与卫星观测 Ｌａｎｄｓａｔ Ｔ Ｍ 资料相结合得到了由标准化差值植被指数 （ Ｎ Ｄ Ｖ Ｉ） 计算地表动量粗糙度的经验关系式， 进而估算了实验区夏季和近冬季的地表粗糙度的区域分布， 并对所得关系式进行了合理性检验。Data collected at several observation sites of HEIFE were used to estimate local roughness length for momentum. Combining of remote sensing data, an experienced formula for calculating roughness length for momentum was obtained from normalized difference vegetation index I NDV .Further, area roughness length for momentum for summer and early winter were estimated by this relationship, which was validated by measurements in the field.

关 键 词：动量粗糙度 植被指数 区域分布 卫星遥感 角动量 

分 类 号：P434.5[天文地球—大气科学及气象学]