globalchange  > 影响、适应和脆弱性
DOI: 10.1002/jgrd.50856
论文题名:
Sea spray geoengineering experiments in the geoengineering model intercomparison project (GeoMIP): Experimental design and preliminary results
作者: Kravitz B.; Forster P.M.; Jones A.; Robock A.; Alterskjær K.; Boucher O.; Jenkins A.K.L.; Korhonen H.; Kristjánsson J.E.; Muri H.; Niemeier U.; Partanen A.-I.; Rasch P.J.; Wang H.; Watanabe S.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期:19
起始页码: 11175
结束页码: 11186
语种: 英语
英文关键词: Geoengineering ; Marine Clouds ; Model Intercomparison
Scopus关键词: Aerosols ; Atmospheric radiation ; Carbon dioxide ; Climate change ; Experiments ; Solar radiation ; Aerosol-cloud interaction ; Aerosol-radiation interactions ; Annual mean precipitation ; Anthropogenic climate changes ; Cloud droplet number concentrations ; Geoengineering ; Marine boundary layers ; Model inter comparisons ; Climate models ; aerosol property ; albedo ; boundary layer ; climate change ; climate modeling ; cloud droplet ; experimental design ; geotechnical engineering ; marine atmosphere ; radiative forcing ; sea salt ; spray ; warming ; Arctic Ocean
英文摘要: Marine cloud brightening through sea spray injection has been proposed as a method of temporarily alleviating some of the impacts of anthropogenic climate change, as part of a set of technologies called geoengineering. We outline here a proposal for three coordinated climate modeling experiments to test aspects of sea spray geoengineering, to be conducted under the auspices of the Geoengineering Model Intercomparison Project (GeoMIP). The first, highly idealized, experiment (G1ocean-albedo) involves a uniform increase in ocean albedo to offset an instantaneous quadrupling of CO2 concentrations from preindustrial levels. Results from a single climate model show an increased land-sea temperature contrast, Arctic warming, and large shifts in annual mean precipitation patterns. The second experiment (G4cdnc) involves increasing cloud droplet number concentration in all low-level marine clouds to offset some of the radiative forcing of an RCP4.5 scenario. This experiment will test the robustness of models in simulating geographically heterogeneous radiative flux changes and their effects on climate. The third experiment (G4sea-salt) involves injection of sea spray aerosols into the marine boundary layer between 30°S and 30°N to offset 2 W m-2 of the effective radiative forcing of an RCP4.5 scenario. A single model study shows that the induced effective radiative forcing is largely confined to the latitudes in which injection occurs. In this single model simulation, the forcing due to aerosol-radiation interactions is stronger than the forcing due to aerosol-cloud interactions. Key Points Outline of three marine cloud brightening experiments Land-sea contrast is an important feature of marine cloud brightening Direct effect of sea salt injection may be greater than indirect effect ©2013. American Geophysical Union. All Rights Reserved.
资助项目: AGS-1157525 ; CBET-1240507
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63268
Appears in Collections:影响、适应和脆弱性
气候减缓与适应

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作者单位: Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, MSIN K9-24, P. O. Box 999, Richland, WA 99352, United States; School of Earth and Environment, University of Leeds, Leeds, United Kingdom; Met Office Hadley Centre, Exeter, United Kingdom; Department of Environmental Sciences, Rutgers University, New Brunswick NJ, United States; Department of Geosciences, University of Oslo, Oslo, Norway; Laboratoire de Météorologie Dynamique, IPSL, CNRS/UPMC, Paris, France; Kuopio Unit, Finnish Meteorological Institute, Kuopio, Finland; Max Planck Institute for Meteorology, Hamburg, Germany; Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan

Recommended Citation:
Kravitz B.,Forster P.M.,Jones A.,et al. Sea spray geoengineering experiments in the geoengineering model intercomparison project (GeoMIP): Experimental design and preliminary results[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(19)
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