建立了一种基于植被冠层辐射传输模型SAILH 的参数化模型。该模型首先对SAILH 模型中用到的9 个\n中间变量的计算过程进行简化, 然后用一个明确的表达式计算光照冠层的单次散射贡献。分别用模拟数据和2008\n年黑河地区星-机-地同步实验中获取的地面测量数据对该参数化模型的反演精度和效率进行了评价。评价结果表明\n该参数化模型能在保证反演精度的基础上极大的提高反演效率; 利用模拟数据进行的模型稳定性评价表明, 参数\n化模型的稳定性优于SAILH 模型。

The paper proposes a parameterized model based on the vegetation canopy radiative transfer model SAILH. This\nmodel simplifies the calculation of the nine intermediate variables of the SAILH model, and adapts an explicit formula to\ncalculate the contribution of the single scattering in the illuminated canopy. We evaluate the retrieval accuracy and efficiency of\nthe parameterized model with simulated data and ground-based measurements which are taken in the satellite-aircraft-ground\nsynchronous experiment over the Heihe river basin in 2008.The results shows that the retrieval efficiency is improved greatly by\nthe parameterized models but the retrieval accuracy is kept. It is also found that the stability of the parameterized model is better\nthan the SAILH model.