Recent Advances in Profile Soil Moisture Retrieval
نویسنده
چکیده
Remote sensing provides a capability to make frequent and spatially distributed measurements of surface soil moisture, whilst recent advances in affordable Time Domain Reflectometry probes allow continuous monitoring of profile soil moisture at specific points. We believe that reliable estimation of the spatial and temporal variation of profile soil moisture on a routine basis will require a combination of calibration and evaluation of an unsaturated soil moisture model using point measurements, and model updating using remote sensing observations to account for spatial inhomogeneities. This study investigates which of two commonly used assimilation techniques is most efficient for the retrieval of soil moisture and temperature profiles, over what depth soil moisture observations are required, and the effect of update interval on profile retrieval. These questions are addressed through a desktop study using synthetic data.
منابع مشابه
Recent Advances in Soil Moisture Estimation from Remote Sensing
Monitoring soil moisture dynamics from local to global scales is essential for a wide range of applications. The field of remote sensing of soil moisture has expanded greatly and the first dedicated soil moisture satellite missions (SMOS, SMAP) were launched, and new missions, such as SENTINEL-1 provide long-term perspectives for land surface monitoring. This special issue aims to summarize the...
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