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Comments on 'Current GCMs' unrealistic negative feedback in the Artic'

MPG-Autoren

Pithan,  Felix
Climate Dynamics, The Atmosphere in the Earth System, MPI for Meteorology, Max Planck Society;
IMPRS on Earth System Modelling, MPI for Meteorology, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons37260

Mauritsen,  Thorsten
Climate Dynamics, The Atmosphere in the Earth System, MPI for Meteorology, Max Planck Society;

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90398431.pdf
(Verlagsversion), 607KB

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Zitation

Pithan, F., & Mauritsen, T. (2013). Comments on 'Current GCMs' unrealistic negative feedback in the Artic'. Journal of Climate, 26, 7783-7788. doi:10.1175/JCLI-D-12-00331.1.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0014-654E-D
Zusammenfassung
In contrast to prior studies showing a positive lapse-rate feedback associated with the Arctic inversion, Boe et al. reported that strong present-day Arctic temperature inversions are associated with stronger negative longwave feedbacks and thus reduced Arctic amplification in the model ensemble from phase 3 of the Coupled Model Intercomparison Project (CMIP3). A permutation test reveals that the relation between longwave feedbacks and inversion strength is an artifact of statistical self-correlation and that shortwave feedbacks have a stronger correlation with intermodel spread. The present comment concludes that the conventional understanding of a positive lapse-rate feedback associated with the Arctic inversion is consistent with the CMIP3 model ensemble.