地表温度与气象站记录的气温不同，它是对卫星可观测范围内的地面可感温度的估测。
Land surface temperature is an estimate of how hot the surface within the satellite's field of view would seem to the touch; it is not the same as the air temperatures recorded at weather stations.
传统的步点法是一种用来统计和估测地面植被盖度的方法。
The step-piont method was traditionally used to measure the vegetative cover on the land surface.
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