Articles | Volume 16, issue 7
https://doi.org/10.5194/gmd-16-1857-2023
https://doi.org/10.5194/gmd-16-1857-2023
Methods for assessment of models
 | 
04 Apr 2023
Methods for assessment of models |  | 04 Apr 2023

Nudging allows direct evaluation of coupled climate models with in situ observations: a case study from the MOSAiC expedition

Felix Pithan, Marylou Athanase, Sandro Dahlke, Antonio Sánchez-Benítez, Matthew D. Shupe, Anne Sledd, Jan Streffing, Gunilla Svensson, and Thomas Jung

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Latest update: 06 Dec 2024
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Short summary
Evaluating climate models usually requires long observational time series, but we present a method that also works for short field campaigns. We compare climate model output to observations from the MOSAiC expedition in the central Arctic Ocean. All models show how the arrival of a warm air mass warms the Arctic in April 2020, but two models do not show the response of snow temperature to the diurnal cycle. One model has too little liquid water and too much ice in clouds during cold days.