globalchange  > 影响、适应和脆弱性
DOI: 10.1002/jgrd.50868
论文题名:
The hydrological impact of geoengineering in the Geoengineering Model Intercomparison Project (GeoMIP)
作者: Tilmes S.; Fasullo J.; Lamarque J.-F.; Marsh D.R.; Mills M.; Alterskjær K.; Muri H.; Kristjánsson J.E.; Boucher O.; Schulz M.; Cole J.N.S.; Curry C.L.; Jones A.; Haywood J.; Irvine P.J.; Ji D.; Moore J.C.; Karam D.B.; Kravitz B.; Rasch P.J.; Singh B.; Yoon J.-H.; Niemeier U.; Schmidt H.; Robock A.; Yang S.; Watanabe S.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期:19
起始页码: 11036
结束页码: 11058
语种: 英语
英文关键词: climate change ; geoengineering ; GeoMIP ; hydrological cycle ; monsoon ; solar radiation management
Scopus关键词: Atmospheric radiation ; Atmospheric thermodynamics ; Climate change ; Computer simulation ; Evaporation ; Evapotranspiration ; Experiments ; Precipitation (meteorology) ; Solar radiation ; Sun ; Water supply ; Geoengineering ; GeoMIP ; Hydrological cycles ; monsoon ; Radiation management ; Carbon dioxide ; carbon dioxide ; climate modeling ; evapotranspiration ; global climate ; radiative forcing ; seasonal variation ; simulation ; solar radiation
英文摘要: The hydrological impact of enhancing Earth's albedo by solar radiation management is investigated using simulations from 12 Earth System models contributing to the Geoengineering Model Intercomparison Project (GeoMIP). We contrast an idealized experiment, G1, where the global mean radiative forcing is kept at preindustrial conditions by reducing insolation while the CO 2 concentration is quadrupled to a 4×CO2 experiment. The reduction of evapotranspiration over land with instantaneously increasing CO2 concentrations in both experiments largely contributes to an initial reduction in evaporation. A warming surface associated with the transient adjustment in 4×CO2 generates an increase of global precipitation by around 6.9% with large zonal and regional changes in both directions, including a precipitation increase of 10% over Asia and a reduction of 7% for the North American summer monsoon. Reduced global evaporation persists in G1 with temperatures close to preindustrial conditions. Global precipitation is reduced by around 4.5%, and significant reductions occur over monsoonal land regions: East Asia (6%), South Africa (5%), North America (7%), and South America (6%). The general precipitation performance in models is discussed in comparison to observations. In contrast to the 4×CO2 experiment, where the frequency of months with heavy precipitation intensity is increased by over 50% in comparison to the control, a reduction of up to 20% is simulated in G1. These changes in precipitation in both total amount and frequency of extremes point to a considerable weakening of the hydrological cycle in a geoengineered world. Key Points Geoengineering leads to a weakening of the hydrologic cycle Evapotranspiration changes important for initial reduction of precipitation Considerable reduction of monsoonal precipitation over land with SRM ©2013. American Geophysical Union. All Rights Reserved.
资助项目: NNG06GB91G
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63236
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: National Center for Atmospheric Research, 1850 Table Mesa Dr., 3450 Mitchell Lane, Boulder, CO 80305, United States; Department of Geosciences, Meteorology and Oceanography Section, University of Oslo, Oslo, Norway; Laboratoire de Météorologie Dynamique, IPSL, CNRS/UPMC, Paris, France; Canadian Centre for Climate Modeling and Analysis, Environment Canada, Toronto ON, Canada; School of Earth and Ocean Sciences, University of Victoria, Victoria BC, Canada; Met Office Hadley Centre, Exeter, United Kingdom; Exeter Climate Systems, University of Exeter, Exeter, United Kingdom; 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; Laboratoire des Sciences du Climat et l'Environnement, CEA, CNRS, UVSQ, Gif-sur-Yvette, France; Pacific Northwest National Laboratory, Richland WA, United States; Max Planck Institute for Meteorology, Hamburg, Germany; Department of Environmental Sciences, Rutgers University, New Brunswick NJ, United States; Danish Meteorological Institute, Copenhagen, Denmark; Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan

Recommended Citation:
Tilmes S.,Fasullo J.,Lamarque J.-F.,et al. The hydrological impact of geoengineering in the Geoengineering Model Intercomparison Project (GeoMIP)[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(19)
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