卫星遥感结合地面观测估算非均匀地表区域能量通量

ESTIMATION OF FLUX DENSITIES OVER THE HETEROGENEOUS LAND SURFACE WITH THE AID OF SATELLITE REMOTE SENSING AND FIELD OBSERVATION

  • 摘要: 卫星遥感在研究非均匀陆面上地-气间能量和水循环过程时有其独到的作用。文中介绍了一种利用LANDSATTM资料进行非均匀陆面上区域能量平衡研究的参数化方案。并以夏季和深秋两个景的TM资料为个例,结合“黑河实验”(HEIFE)期间的地面观测资料分析了实验区非均匀陆面上地表特征参数及能量平衡各分量的区域分布及季节差异,同时将所得的结果与地面观测的“真值”作了比较,所得的这些结果是基本可信的。这种方法仍然处于发展的初始阶段,对此也进行了讨论。

     

    Abstract: To improve underst anding of the processes of heterog eneous land surface-atmosphere interaction, the utilization of satellite remote sensing is indispensable. The distribution charact eristics of surface heat fluxes in the heterog eneous landscape of HEIFE were analyzed with the aido fsatellite remote sensing and field obser vatio nin this paper. The results show that the reasonable regional distribution of surface albedo, NDVI and surface temperature, net radiation, soil heat flux, sensible and latent heat flux can be derived with the aid of remote sensing and the field observation. This technique is still in a developing stage, it was also discussed in this paper.

     

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