Efficacy of Climate Forcings in PDRMIP Models.
Climate Sensitivity
Efficacy
PDRMIP
Radiative Forcing
Surface temperature
Journal
Journal of geophysical research. Atmospheres : JGR
ISSN: 2169-897X
Titre abrégé: J Geophys Res Atmos
Pays: United States
ID NLM: 9882986
Informations de publication
Date de publication:
16 Dec 2019
16 Dec 2019
Historique:
received:
03
03
2019
revised:
15
11
2019
accepted:
16
11
2019
entrez:
7
2
2020
pubmed:
7
2
2020
medline:
7
2
2020
Statut:
ppublish
Résumé
Quantifying the efficacy of different climate forcings is important for understanding the real-world climate sensitivity. This study presents a systematic multimodel analysis of different climate driver efficacies using simulations from the Precipitation Driver and Response Model Intercomparison Project (PDRMIP). Efficacies calculated from instantaneous radiative forcing deviate considerably from unity across forcing agents and models. Effective radiative forcing (ERF) is a better predictor of global mean near-surface air temperature (GSAT) change. Efficacies are closest to one when ERF is computed using fixed sea surface temperature experiments and adjusted for land surface temperature changes using radiative kernels. Multimodel mean efficacies based on ERF are close to one for global perturbations of methane, sulfate, black carbon, and insolation, but there is notable intermodel spread. We do not find robust evidence that the geographic location of sulfate aerosol affects its efficacy. GSAT is found to respond more slowly to aerosol forcing than CO
Identifiants
pubmed: 32025453
doi: 10.1029/2019JD030581
pii: JGRD55914
pmc: PMC6988499
doi:
Types de publication
Journal Article
Langues
eng
Pagination
12824-12844Informations de copyright
©2019. The Authors.
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