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No Cookie for climate change

Voigt, A.; Albern, N.

Abstract (englisch):
Climate change leads to changes in cloud‐radiative heating, which previous work showed have a substantial impact on the response of the atmospheric circulation to climate change. We here compare to what extent this cloud‐radiative impact in models can be diagnosed by the locking method and the Cookie method. We show that the locking method reliably diagnoses the cloud‐radiative impact. In contrast, the Cookie method, which is easier to use and valuable for studying how the presence of clouds affects the present‐day circulation, is inadequate in the context of climate change. It misdiagnoses the cloud‐radiative impact and misses robust aspects of it, including the poleward circulation expansion. We argue that this is related to strong changes in the control climate and water vapor that arise from making clouds transparent to radiation. Our results highlight the need for dedicated locking simulations in the context of climate change.

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Verlagsausgabe §
DOI: 10.5445/IR/1000104230
Veröffentlicht am 13.01.2020
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Forschungsbereich Troposphäre (IMK-TRO)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2019
Sprache Englisch
Identifikator ISSN: 0094-8276, 1944-8007
KITopen-ID: 1000104230
HGF-Programm 12.01.02 (POF III, LK 01)
Proc.res.f.multisc.predictab.of weather
Erschienen in Geophysical research letters
Band 46
Heft 24
Seiten 14751-14761
Projektinformation CONSTRAin (BMBF, 01LK1509A)
Vorab online veröffentlicht am 09.12.2019
Nachgewiesen in Scopus
Web of Science
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