Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT

Freigegeben

Zeitschriftenartikel

Maximum entropy production, cloud feedback, and climate change

MPG-Autoren
/persons/resource/persons62359

Cuntz,  M.
Department Biogeochemical Systems, Prof. M. Heimann, Max Planck Institute for Biogeochemistry, Max Planck Society;

Externe Ressourcen
Volltexte (beschränkter Zugriff)
Für Ihren IP-Bereich sind aktuell keine Volltexte freigegeben.
Volltexte (frei zugänglich)
Es sind keine frei zugänglichen Volltexte in PuRe verfügbar
Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar
Zitation

Paltridge, G. W., Farquhar, G. D., & Cuntz, M. (2007). Maximum entropy production, cloud feedback, and climate change. Geophysical Research Letters, 34(14), L14708. doi:10.1029/2007gl029925.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-000E-D59C-5
Zusammenfassung
A steady-state energy-balance climate model based on a global constraint of maximum entropy production is used to examine cloud feedback and the response of surface temperature T to doubled atmospheric CO2. The constraint ensures that change in zonal cloud amount theta necessarily involves change in the convergence KX of meridional energy flow. Without other feedbacks, the changes in q, KX and T range from about 2%, 2 Wm(-2) and 1.5 K respectively at the equator to -2%, -2 Wm(-2) and 0.5 K at the poles. Global-average cloud effectively remains unchanged with increasing CO2 and has little effect on global-average temperature. Global-average cloud decreases with increasing water vapour and amplifies the positive feedback of water vapour and lapse rate. The net result is less cloud at all latitudes and a rise in T of the order of 3 K at the equator and 1 K at the poles. Ice-albedo and solar absorption feedbacks are not considered.