Articles | Volume 22, issue 6
https://doi.org/10.5194/acp-22-4019-2022
https://doi.org/10.5194/acp-22-4019-2022
Research article
 | 
28 Mar 2022
Research article |  | 28 Mar 2022

An assessment of tropopause characteristics of the ERA5 and ERA-Interim meteorological reanalyses

Lars Hoffmann and Reinhold Spang

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Latest update: 27 Mar 2024
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Short summary
We present an intercomparison of 2009–2018 lapse rate tropopause characteristics as derived from ECMWF's ERA5 and ERA-Interim reanalyses. Large-scale features are similar, but ERA5 shows notably larger variability, which we mainly attribute to UTLS temperature fluctuations due to gravity waves being better resolved by ECMWF's IFS forecast model. Following evaluation with radiosondes and GPS data, we conclude ERA5 will be a more suitable asset for tropopause-related studies in future work.
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