Abstract: AbstractIn this paper we outline the ozone model and analysis system used in the ECMWF 45‐year reanalysis project, and take a first look at the quality of the resulting ozone fields. The analysed ozone, both profiles and total‐column ozone field, generally compares well with independent observations. However, there are certain problematic situations when the profile is not correct even if the analysed total ozone is close to observations. These situations appear when there is a bias between the model and the observations used in the assimil...
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Topics: 
Meteorology
Atmospheric sciences
Climatology