SEA-ICE LOSS
; POLAR AMPLIFICATION
; VERTICAL STRUCTURE
; BLACK CARBON
; MULTIMODEL ASSESSMENT
; ATMOSPHERIC RESPONSE
; STRATOSPHERIC OZONE
; TEMPERATURE
; AEROSOL
; PRECIPITATION
WOS学科分类:
Meteorology & Atmospheric Sciences
WOS研究方向:
Meteorology & Atmospheric Sciences
英文摘要:
The Arctic is experiencing rapid climate change in response to changes in greenhouse gases, aerosols, and other climate drivers. Emission changes in general, as well as geographical shifts in emissions and transport pathways of short-lived climate forcers, make it necessary to understand the influence of each climate driver on the Arctic. In the Precipitation Driver Response Model Intercomparison Project, 10 global climate models perturbed five different climate drivers separately (CO2, CH4, the solar constant, black carbon, and SO4). We show that the annual mean Arctic amplification (defined as the ratio between Arctic and the global mean temperature change) at the surface is similar between climate drivers, ranging from 1.9 ( an intermodel standard deviation of 0.4) for the solar to 2.3 (0.6) for the SO4 perturbations, with minimum amplification in the summer for all drivers. The vertical and seasonal temperature response patterns indicate that the Arctic is warmed through similar mechanisms for all climate drivers except black carbon. For all drivers, the precipitation change per degree global temperature change is positive in the Arctic, with a seasonality following that of the Arctic amplification. We find indications that SO4 perturbations produce a slightly stronger precipitation response than the other drivers, particularly compared to CO2.
1.CICERO Ctr Int Climate & Environm Res, Oslo, Norway 2.Univ Leeds, Leeds, W Yorkshire, England 3.Met Off Hadley Ctr, Exeter, Devon, England 4.Univ Paris 06, Inst Pierre Simon Lapl, CNRS, Paris, France 5.Columbia Univ, Ctr Climate Syst Res, New York, NY USA 6.NASA, Goddard Inst Space Studies, New York, NY 10025 USA 7.Max Planck Inst Meteorol, Hamburg, Germany 8.Norwegian Meteorol Inst, Oslo, Norway 9.Imperial Coll London, London, England 10.Canadian Ctr Climate Modelling & Anal, Victoria, BC, Canada 11.NCAR UCAR, Boulder, CO USA 12.Duke Univ, Nicholas Sch Environm, Durham, NC 27708 USA 13.Kyushu Univ, Fukuoka, Fukuoka, Japan
Recommended Citation:
Stjern, Camilla Weum,Lund, Marianne Tronstad,Samset, Bjorn Hallvard,et al. Arctic Amplification Response to Individual Climate Drivers[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019-01-01,124(13):6698-6717