Error Propagation in Microwave Soil Moisture and Vegetation Optical Depth Retrievals.

ABSTRACT: Satellite soil moisture and vegetation optical depth [(VOD); related to the total vegetation water mass per unit area] are increasingly being used to study water relations in the soil-plant continuum across the globe. However, soil moisture and VOD are typically jointly estimated, where errors in the optimization approach can cause compensation between both variables and confound such studies. It is thus critical to quantify how satellite microwave measurement errors propagate into soil moisture and VOD. Such a study is especially important for VOD given limited investigations of whether VOD reflects in situ plant physiology. Furthermore, despite new approaches that constrain (or regularize) VOD dynamics to reduce soil moisture errors, there is limited study of whether regularizatio

SUBMITTER: Feldman AF 

PROVIDER: S-EPMC8740529 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature