Bounding Global Aerosol Radiative Forcing of Climate Change.
Journal
Reviews of geophysics (Washington, D.C. : 1985)
ISSN: 8755-1209
Titre abrégé: Rev Geophys
Pays: United States
ID NLM: 101137089
Informations de publication
Date de publication:
Mar 2020
Mar 2020
Historique:
received:
16
05
2019
revised:
30
09
2019
accepted:
03
10
2019
entrez:
1
8
2020
pubmed:
1
8
2020
medline:
1
8
2020
Statut:
ppublish
Résumé
Aerosols interact with radiation and clouds. Substantial progress made over the past 40 years in observing, understanding, and modeling these processes helped quantify the imbalance in the Earth's radiation budget caused by anthropogenic aerosols, called aerosol radiative forcing, but uncertainties remain large. This review provides a new range of aerosol radiative forcing over the industrial era based on multiple, traceable, and arguable lines of evidence, including modeling approaches, theoretical considerations, and observations. Improved understanding of aerosol absorption and the causes of trends in surface radiative fluxes constrain the forcing from aerosol-radiation interactions. A robust theoretical foundation and convincing evidence constrain the forcing caused by aerosol-driven increases in liquid cloud droplet number concentration. However, the influence of anthropogenic aerosols on cloud liquid water content and cloud fraction is less clear, and the influence on mixed-phase and ice clouds remains poorly constrained. Observed changes in surface temperature and radiative fluxes provide additional constraints. These multiple lines of evidence lead to a 68% confidence interval for the total aerosol effective radiative forcing of -1.6 to -0.6 W m
Identifiants
pubmed: 32734279
doi: 10.1029/2019RG000660
pii: ROG20214
pmc: PMC7384191
doi:
Types de publication
Journal Article
Review
Langues
eng
Pagination
e2019RG000660Informations de copyright
©2019. The Authors.
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