Evaluation of Assimilation
How can we evaluate the soil moisture assimilation?
Soil moisture – ideal but limited data available. United states
has 19 stations in Illinois, 6 stations in Iowa and transect of 89
points in New Mexico for SMMR period.
Analysis increments – only provides check for systematic
biases.
Runoff - data available but assumes that soil moisture is the
only reason for poor estimates.
Evapotranspiration – data not available and assumes that soil
moisture is the only reason for poor estimates.
Precipitation forecasts – assumes soil moisture is the only
reason for poor forecasts.
Other ?