DOI: 10.1175/JCLI-D-17-0620.1
Scopus记录号: 2-s2.0-85050240623
论文题名: Climate response to aerosol geoengineering: A multimethod comparison
作者: Muri H. ; Tjiputra J. ; Otterå O.H. ; Adakudlu M. ; Lauvset S.K. ; Grini A. ; Schulz M. ; Niemeier U. ; Kristjánsson J.E.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期: 16 起始页码: 6319
结束页码: 6340
语种: 英语
英文关键词: Atmosphere
; Carbon cycle
; Clouds
; General circulation models
; North Atlantic Oscillation
; Ocean
Scopus关键词: Aerosols
; Atmospheric pressure
; Budget control
; Clouds
; Earth atmosphere
; Global warming
; Sea ice
; Sea level
; Anthropogenic climate changes
; Anthropogenic global warming
; Carbon cycles
; General circulation model
; Global-mean temperature
; North Atlantic oscillations
; Ocean
; Three different techniques
; Climate models
; aerosol
; carbon cycle
; carbon dioxide
; cirrus
; climate change
; climate forcing
; climate modeling
; cloud microphysics
; general circulation model
; global warming
; North Atlantic Oscillation
英文摘要: Considering the ambitious climate targets of the Paris Agreement to limit global warming to 2°C, with aspirations of even 1.5°C, questions arise on how to achieve this. Climate geoengineering has been proposed as a potential tool to minimize global harm from anthropogenic climate change. Here, an Earth system model is used to evaluate the climate response when transferring from a high CO2 forcing scenario, RCP8.5, to a middle-of-the-road forcing scenario, like RCP4.5, using aerosol geoengineering. Three different techniques are considered: stratospheric aerosol injections (SAI), marine sky brightening (MSB), and cirrus cloud thinning (CCT). The climate states appearing in the climate geoengineering cases are found to be closer to RCP4.5 than RCP8.5 and many anthropogenic global warming symptoms are alleviated. All three techniques result in comparable global mean temperature evolutions. However, there are some notable differences in other climate variables due to the nature of the forcings applied. CCT acts mainly on the longwave part of the radiation budget, as opposed to MSB and SAI acting in the shortwave. This yields a difference in the response, particularly in the hydrological cycle. The responses in sea ice, sea level, ocean heat, and circulation, as well as the carbon cycle, are furthermore compared. Sudden termination of the aerosol injection geoengineering shows that the climate very rapidly (within two decades) reverts to the path of RCP8.5, questioning the sustainable nature of such climate geoengineering, and simultaneous mitigation during any such form of climate geoengineering would be needed to limit termination risks. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111442
Appears in Collections: 气候减缓与适应
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作者单位: Section for Meteorology and Oceanography, Department of Geosciences, University of Oslo, Oslo, Norway; Industrial Ecology Program, Department of Energy and Process Engineering, Norwegian University of Science and Technology, Trondheim, Norway; Uni Research Climate, Bjerknes Centre for Climate Research, Bergen, Norway; Meteorological Institute, Oslo, Norway; Max Planck Institute for Meteorology, Hamburg, Germany
Recommended Citation:
Muri H.,Tjiputra J.,Otterå O.H.,et al. Climate response to aerosol geoengineering: A multimethod comparison[J]. Journal of Climate,2018-01-01,31(16)