藏北高原地区辐射收支和季节变化与卫星遥感的对比分析

The Contrast Between the Radiation Budget Plus Seasonal Variation and Remote Sensing Over the Northern TibetanPlateau

利用“全球能量与水循环亚洲季风之青藏高原试验”GAME/Tibet(GEWEXAsianMonsoonExperimentintheTibetanPlateau) 1 998年加强期 (IOP)观测资料 ,分析研究了藏北高原地区草甸下垫面在季风前、季风中、季风后的太阳短波向下辐射、大气长波向下辐射、地面长波向上辐射、地面短波向上辐射、净辐射及地表反射率等特征 ,得到了一些藏北高原地区草甸下垫面的辐射特征的新认识。利用文献的结果对其中的某些地表辐射平衡分量做了对比 ,结果显示遥感参数化得到的结果与地表观测值有很好的一致。

Using GAME/Tibet (GEWEX Asian Monsoon Experiment in the Tibetan Plateau) IOP data of 1998, K.(Downward Shortwave Radiation), K.(Upward Shortwave Radiation), L.(Upward Longwave Radiation), L.(Downward Longwave Radiation), R n (net radiation flux) and surface reflectance of pre-monsoon, mid-monsoon and after-monsoon in the northern Tibetan plateau were analyzed in this research. Some new results were gotten in the northern Tibet plateau area. Some land surface variables were analyzed by referenceresults. It is seen that the derived net radiation and surface albedo for the whole mesoscale area were in good accordance with the land surface status.