background field

From Glossary of Meteorology
(Redirected from First-guess field)
In objective analysis and data assimilation, an a priori estimate of the atmospheric state.

In most data assimilation systems, the background field is a forecast from the previous analysis time. Note that the term "first-guess field" has been used for the background field, but "background field" is currently the preferred usage.


In objective analysis and data assimilation, an a priori estimate of the atmospheric state.

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