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Gewählte Publikation:

Lutsko, NJ; Popp, M; Nazarian, RH; Albright, AL.
(2021): Emergent Constraints on Regional Cloud Feedbacks
GEOPHYS RES LETT. 2021; 48(10), e2021GL092934 FullText FullText_BOKU

Abstract:
Low-cloud based emergent constraints have the potential to substantially reduce uncertainty in Earth's equilibrium climate sensitivity, but recent work has shown that previously developed constraints fail in the latest generation of climate models, suggesting that new approaches are needed. Here, we investigate the potential for emergent constraints to reduce uncertainty in regional cloud feedbacks, rather than the global-mean cloud feedback. Strong relationships are found between the monthly and interannual variability of tropical clouds, and the tropical net cloud feedback. These relationships are combined with observations to substantially narrow the uncertainty in the tropical cloud feedback and demonstrate that the tropical cloud feedback is likely >0Wm(-2)K(-1). Promising relationships are also found in the 90 degrees-60 degrees S and 30 degrees-60 degrees N regions, though these relationships are not robust across model generations and we have not identified the associated physical mechanisms.
Autor*innen der BOKU Wien:
Popp Max
BOKU Gendermonitor:


Find related publications in this database (Keywords)
Climate sensitivity
cloud feedbacks
emergent constraint
tropical clouds


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