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| • |
Typically
observations of surface soil moisture
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must
have an accuracy of better than 5% v/v.
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| • |
If
model covariance forecasts are imperfect and
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observation
errors are large there may be a
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slight
degradation of the model forecast.
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| • |
To
achieve the best results, it is important that
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the
model, model forcing and observations be
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unbiased,
or the bias modeled as part of the
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assimilation
framework.
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