论文标题
基于SMAP的植被不透明和反照率检索
SMAP-based retrieval of vegetation opacity and albedo
论文作者
论文摘要
在土地上，植被冠层通过发射，散射和表面土壤发射的衰减会影响微波亮度温度。这项研究中解决的问题是：1）在低频L频段下，全球不同生物群的植被冠层的透明度是什么？这些问题是根据NASA土壤水分主动被动（SMAP）测量的最近完成的全年周期测量来解决的。
Over land the vegetation canopy affects the microwave brightness temperature by emission, scattering and attenuation of surface soil emission. The questions addressed in this study are: 1) what is the transparency of the vegetation canopy for different biomes around the Globe at the low-frequency L-band?, 2) what is the seasonal amplitude of vegetation microwave optical depth for different biomes?, 3) what is the effective scattering at this frequency for different vegetation types?, 4) what is the impact of imprecise characterization of vegetation microwave properties on retrieval of soil surface conditions? These questions are addressed based on the recently completed one full annual cycle measurements by the NASA Soil Moisture Active Passive (SMAP) measurements.
