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arXiv 0906.4686physics.geo-ph
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岩石对土壤湿质岩辐射测量微区影响的模拟。空间任务应用Smos

Modelisation Des Effets De la Rugosite Sur L'Etude De L'Humidite Des Sols Par Radiometrie Micro-Ondes. Application a la Mission Spatiale Smos

François Demontoux, Heather Lawrence, Jean Pierre Wigneron

摘要:

作为SMOS(土壤湿度和海洋盐度)飞行任务的一部分,国际监测系统和地球物理学和地球物理学实验室参与了反演算法LMEB的研究和验证。在本研究的框架下,我们使用数值模拟软件HFSS ANSOFT开发了一个模型。它允许计算多层系统的发射率(例如,土壤凋落物)。我们已经改进了我们的方法,以纳入新的参数,可以对测量产生显着影响。事实上,到目前为止,与凋落物相关的土壤粗糙度的影响尚未研究。此外,枯枝落叶层的厚度从来都不是恒定的,因此我们必须引入一个实际的枯枝落叶层厚度分布。本文介绍了我们的工作,将这些配置文件在我们的数值模型。这些剖面图可通过测量(凋落物厚度剖面图或土壤粗糙度剖面图)或计算(粗糙度剖面图)得出。在这两种情况下,我们模型的输入数据都是代表我们轮廓的XYZ点文件。

英文摘要:

As part of the SMOS mission (Soil Moisture and Ocean Salinity) IMS and EPHYSE laboratories are involved in the study and validation of the inversion algorithm LMEB. In the framework of this study, we developed a model using the numerical modeling software-HFSS ANSOFT. It allows the computation of the emissivity of multilayer systems (soil-litter for example). We have improved our approach to incorporate new parameters that can have a significant effect on the measurements. Indeed, so far the effect of soil roughness associated with the litter has not been studied. Moreover, the thickness of litter is never constant and we must therefore introduce a realistic profile of litter thickness. This article presents our work to integrate these profiles in our numerical model. These profiles may be derived from measurements (litter thickness profiles or soil roughness profiles) or calculations (roughness profile). In both cases the input data of our model are files of XYZ points representing our profile.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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