DOI: 10.1007/s00382-016-3055-1
Scopus记录号: 2-s2.0-84960374743
论文题名: Small global-mean cooling due to volcanic radiative forcing
作者: Gregory J.M. ; Andrews T. ; Good P. ; Mauritsen T. ; Forster P.M.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2016
卷: 47, 期: 12 起始页码: 3979
结束页码: 3991
语种: 英语
英文关键词: Aerosol
; Climate sensitivity
; Ocean heat uptake
; Radiative forcing
; Transient climate response
; Volcano
英文摘要: In both the observational record and atmosphere-ocean general circulation model (AOGCM) simulations of the last ∼ 150 years, short-lived negative radiative forcing due to volcanic aerosol, following explosive eruptions, causes sudden global-mean cooling of up to ∼ 0.3 K. This is about five times smaller than expected from the transient climate response parameter (TCRP, K of global-mean surface air temperature change per W m−2 of radiative forcing increase) evaluated under atmospheric CO2 concentration increasing at 1 % yr−1. Using the step model (Good et al. in Geophys Res Lett 38:L01703, 2011. doi:10.1029/2010GL045208), we confirm the previous finding (Held et al. in J Clim 23:2418–2427, 2010. doi:10.1175/2009JCLI3466.1) that the main reason for the discrepancy is the damping of the response to short-lived forcing by the thermal inertia of the upper ocean. Although the step model includes this effect, it still overestimates the volcanic cooling simulated by AOGCMs by about 60 %. We show that this remaining discrepancy can be explained by the magnitude of the volcanic forcing, which may be smaller in AOGCMs (by 30 % for the HadCM3 AOGCM) than in off-line calculations that do not account for rapid cloud adjustment, and the climate sensitivity parameter, which may be smaller than for increasing CO2 (40 % smaller than for 4 × CO2 in HadCM3). © 2016, The Author(s). 资助项目: ERC, European Research Council
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53454
Appears in Collections: 过去全球变化的重建
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作者单位: NCAS-Climate, University of Reading, Reading, United Kingdom; Met Office Hadley Centre, Exeter, United Kingdom; Max Planck Institute for Meteorology, Hamburg, Germany; School of Earth and Environment, University of Leeds, Leeds, United Kingdom
Recommended Citation:
Gregory J.M.,Andrews T.,Good P.,et al. Small global-mean cooling due to volcanic radiative forcing[J]. Climate Dynamics,2016-01-01,47(12)