DOI: 10.1175/JCLI-D-14-00050.1
Scopus记录号: 2-s2.0-84926060083
论文题名: A standardized global climate model study showing unique properties for the climate response to black carbon aerosols
作者: Sand M. ; Iversen T. ; Bohlinger P. ; Kirkevåg A. ; Seierstad I. ; Seland Ø. ; Sorteberg A.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期: 6 起始页码: 2512
结束页码: 2526
语种: 英语
Scopus关键词: Aerosols
; Atmospheric aerosols
; Atmospheric radiation
; Carbon
; Carbon dioxide
; Climatology
; Feedback
; Fog
; Atmospheric circulation
; Atmospheric feedbacks
; Atmospheric process
; Black carbon aerosol
; Climate variability
; Forcing
; Global climate model
; Intertropical convergence zone
; Climate models
; aerosol
; atmospheric circulation
; black carbon
; climate feedback
; climate forcing
; climate modeling
; climate variation
; global climate
; intertropical convergence zone
; radiative forcing
; top of atmosphere
; Southeast Asia
英文摘要: The climate response to an abrupt increase of black carbon (BC) aerosols is compared to the standard CMIP5 experiment of quadrupling CO2 concentrations in air. The global climate model NorESM with interactive aerosols is used. One experiment employs prescribed BC emissions with calculated concentrations coupled to atmospheric processes (emission-driven) while a second prescribes BC concentrations in air (concentration-driven) from a precalculation with the same model and emissions, but where the calculated BC does not force the climate dynamics. The difference quantifies effects of feedbacks between airborne BC and other climate processes. BC emissions are multiplied with 25, yielding an instantaneous top-of-atmosphere (TOA) radiative forcing (RF) comparable to the quadrupling of atmospheric CO2 . A radiative kernel method is applied to estimate the different feedbacks. In both BC runs, BC leads to a much smaller surface warming than CO2 . Rapid atmospheric feedbacks reduce the BC-induced TOA forcing by approximately 75% over the first year (10% for CO2 ). For BC, equilibrium is quickly re-established, whereas for CO2 equilibration requires a much longer time than 150 years. Emission-driven BC responses in the atmosphere are much larger than the concentration-driven. The northward displacement of the intertropical convergence zone (ITCZ) in the BC emission-driven experiment enhances both the vertical transport and deposition of BC from Southeast Asia. The study shows that prescribing BC concentrations may lead to seriously inaccurate conclusions, but other models with less efficient transport may produce results with smaller differences. © 2015 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50905
Appears in Collections: 气候变化事实与影响
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作者单位: Center for International Climate and Environmental Research-Oslo, Department of Geosciences, University of Oslo, Oslo, Norway; European Centre for Medium-Range Weather Forecasts, Reading, United Kingdom; Norwegian Meteorological Institute, Oslo, Norway; University of Bergen, Geophysical Institute, Bergen, Norway
Recommended Citation:
Sand M.,Iversen T.,Bohlinger P.,et al. A standardized global climate model study showing unique properties for the climate response to black carbon aerosols[J]. Journal of Climate,2015-01-01,28(6)