Abstract: The observation error variances assumed in the data assimilation (DA) of remotely sensed near-surface soil moisture observations are known to have unrealistic spatial patterns. The temporal variability in the errors is also typically neglected. Soil moisture errors cannot be directly calculated at large scales, and the globally distributed errors are unknown. We apply several approaches to estimating the observation errors (R matrix) for near-surface soil moisture DA experiments, to establish...

Source: Observation Error Specification for Near-Surface Soil Moisture Assimilation: Does It Matter?


David Cottle

UBB Owner & Administrator