globalchange  > 影响、适应和脆弱性
DOI: 10.1002/2013JD020502
论文题名:
An energetic perspective on hydrological cycle changes in the Geoengineering Model Intercomparison Project
作者: Kravitz B.; Rasch P.J.; Forster P.M.; Andrews T.; Cole J.N.S.; Irvine P.J.; Ji D.; Kristjánsson J.E.; Moore J.C.; Muri H.; Niemeier U.; Robock A.; Singh B.; Tilmes S.; Watanabe S.; Yoon J.-H.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期:23
起始页码: 13087
结束页码: 13102
语种: 英语
英文关键词: energetic perspective ; geoengineering ; hydrologic cycle ; model intercomparison
Scopus关键词: Carbon dioxide ; Climate change ; Heat flux ; Moisture ; Surface measurement ; energetic perspective ; Geoengineering ; Global-mean temperature ; Hydrologic cycles ; Model inter comparisons ; Moisture convergence ; Pre-industrial levels ; Simulating experiments ; Atmospheric temperature ; climate feedback ; energy budget ; evaporation ; general circulation model ; hydrological cycle ; irradiance ; latent heat flux ; numerical model ; sensible heat flux
英文摘要: Analysis of surface and atmospheric energy budget responses to CO 2 and solar forcings can be used to reveal mechanisms of change in the hydrological cycle. We apply this energetic perspective to output from 11 fully coupled atmosphere-ocean general circulation models simulating experiment G1 of the Geoengineering Model Intercomparison Project (GeoMIP), which achieves top-of-atmosphere energy balance between an abrupt quadrupling of CO2 from preindustrial levels (abrupt4xCO2) and uniform solar irradiance reduction. We divide the climate system response into a rapid adjustment, in which climate response is due to adjustment of the atmosphere and land surface on short time scales, and a feedback response, in which the climate response is predominantly due to feedback related to global mean temperature changes. Global mean temperature change is small in G1, so the feedback response is also small. G1 shows a smaller magnitude of land sensible heat flux rapid adjustment than in abrupt4xCO2 and a larger magnitude of latent heat flux adjustment, indicating a greater reduction of evaporation and less land temperature increase than abrupt4xCO2. The sum of surface flux changes in G1 is small, indicating little ocean heat uptake. Using an energetic perspective to assess precipitation changes, abrupt4xCO2 shows decreased mean evaporative moisture flux and increased moisture convergence, particularly over land. However, most changes in precipitation in G1 are in mean evaporative flux, suggesting that changes in mean circulation are small. Key Points Geoengineering feedback response is small Geoengineering can limit ocean heat uptake in a high CO2 climate Annual mean circulation changes under geoengineering may be small ©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/63112
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, 902 Battelle Boulevard, Richland, WA 99352, United States; School of Earth and Environment, University of Leeds, Leeds, United Kingdom; Met Office Hadley Centre, Exeter, United Kingdom; Canadian Centre for Climate Modelling and Analysis, Environment Canada, Toronto ON, Canada; Institute for Advanced Sustainability Studies, Potsdam, Germany; State Key Laboratory of Earth Surface Processes and Resource Ecology, College of Global Change and Earth System Science, Beijing Normal University, Beijing, China; Department of Geosciences, University of Oslo, Oslo, Norway; Max Planck Institute for Meteorology, Hamburg, Germany; Department of Environmental Sciences, Rutgers University, New Brunswick NJ, United States; National Center for Atmospheric Research, Boulder CO, United States; Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan

Recommended Citation:
Kravitz B.,Rasch P.J.,Forster P.M.,et al. An energetic perspective on hydrological cycle changes in the Geoengineering Model Intercomparison Project[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(23)
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