雪粒径遥感反演研究进展  

Progress in the Research on Snow Grain Size Retrieved from Remote Sensing

作　　者：郭忠明[1] 王宁练[1] 

机构地区：[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

出　　处：《冰川冻土》2011年第3期539-545,共7页Journal of Glaciology and Geocryology

基　　金：国家自然科学基金重点项目"尘埃与黑碳对青藏高原冰雪反照率及其融水径流的影响研究"(40930526);全球变化研究国家重大科学研究计划项目"北半球冰冻圈变化及其对气候环境的影响与适应对策"(2010CB951404)资助

摘　　要：介绍了雪粒径遥感反演的研究历史,阐述了球形或非球形假设下基于雪在可见光波段高反射,在红外区雪面反射率显著下降且对雪粒径变化敏感原理的遥感反演基础,其中包括诸如温度、波长、颗粒形状等,并总结了目前研究中所应用的模型和算法,指出其优点和不足之处.此外,为了得到反演粒径的准确性,讨论了诸如温度、波长、颗粒形状等因素对粒径反演的影响以及其验证方法.In this paper,the significance and history of studying the snow grain size are introduced.Based on the assumption that highly reflectivity in the visible band and the reflectivity of snow surface decreasing significantly in the infrared band,the grain size of snow,spherical and non-spherical,is sensitive to the change in remote sensing retrieval foundation.Finally the models and algorithms applied in current studies are summed up,together with their advantage and shortage.In addition,in order to get the accuracy of the retrieval,some factors that may affect the grain size retrieved are also discussed,such as temperature,wavelength,particle shape,etc.,as well as the authentication method.

关 键 词：雪粒径 遥感反演 模型和算法 

分 类 号：P407[天文地球—大气科学及气象学]