摘要
本文利用1987年1—6月的NOAA卫星AVHRR资料在37.66°—39.88°N,98.5°—101.5°E的范围内(包括黑河中、上游流域)推算出与地表特征密切相关的某些参数,如雪盖、植被指数和地面反射率等,从而对下垫面属性进行分类。并利用这些地表参数分析下垫面性质的时相变化,如雪盖和作物长势随时间的变化等。
In this paper, by using NOAA satellite AVHRR data from January to June 1987, in the region of over 37.66°-39.88° N and 98.5°-101.5°.E(including the upper and middle reaches of Heihe River), some surface parameters that concern surface properties, such as snow cover, vegetation index and surface reflectances, etc., have been estimated. According to these estimated results, the surface properties can be identified. Relying on these estimated surface parameters, we have analyzed the variation of time-space of surface properties, for example, the variation of snow cover and growing condition of crop with time, etc.
出处
《高原气象》
CSCD
北大核心
1992年第4期431-439,共9页
Plateau Meteorology
关键词
地表参数
黑河地区
气象卫星
Surface parameter
Satellite data
Heihe River region.
