Suppressant effect of instantaneous CO2 doubling on global precipitation

Auteur(s) et Affiliation(s)



Description :
In this study, the energy balances that are responsible for the suppression of rainfall were quantitatively investigated based on 7 GCMs in which instantaneous doubling of CO2 experiments were conducted. Radiative heating induced by CO2 doubling warmed both the atmosphere and the surface, while the amount of the surface heating was smaller relative to that of the atmosphere. Consequently, the attenuated heating at the surface resulted in weakening of evaporation on the surface, which could explain the decrease of rainfall. As for the heat budget of the atmosphere, the attenuated heating was balanced with the less condensation heating, implicating radiative adjustment was a key element for the rainfall decrease.


Type de document :
Article de périodique

Source :
Tsukuba geoenvironmental sciences, issn : 1880-6252, 2009, vol. 5, p. 11-16, nombre de pages : 6, Références bibliographiques : 23 ref.

Date :
2009

Editeur :
Pays édition : Japon