DOI: 10.1175/JCLI-D-11-00282.1
Scopus记录号: 2-s2.0-84870013856
论文题名: Investigation of the surface and circulation impacts of cloud-brightening geoengineering
作者: Baughman E. ; Gnanadesikan A. ; Degaetano A. ; Adcroft A.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期: 21 起始页码: 7527
结束页码: 7543
语种: 英语
Scopus关键词: Arctic warming
; Climate system
; Cloud albedo
; Cloud condensation nuclei
; Cloud forcing
; Cloud modification
; ENSO
; Equatorial Pacific
; Geoengineering
; Global climate changes
; Global coupled model
; Pacific ocean
; Precipitation change
; South China sea
; Surface temperatures
; Tropical atlantic
; Vertical wind shear
; Walker circulation
; Western Pacific
; Atmospheric temperature
; Carbon dioxide
; Climate change
; Clouds
; Greenhouse gases
; Nickel compounds
; Solar radiation
; Precipitation (meteorology)
; albedo
; carbon dioxide
; climate change
; climate modeling
; cloud condensation nucleus
; El Nino-Southern Oscillation
; global climate
; greenhouse gas
; hurricane
; precipitation (climatology)
; surface temperature
; typhoon
; Walker circulation
; wind shear
; Atlantic Ocean
; Atlantic Ocean (Tropical)
; Japan
; Pacific Ocean
; Pacific Ocean (Equatorial)
; Pacific Ocean (West)
; South China Sea
英文摘要: Projected increases in greenhouse gases have prompted serious discussion on geoengineering the climate system to counteract global climate change. Cloud albedo enhancement has been proposed as a feasible geoengineering approach, but previous research suggests undesirable consequences of globally uniform cloud brightening. The present study uses GFDL's Climate Model version 2G (CM2G) global coupled model to simulate cloud albedo enhancement via increases in cloud condensation nuclei (CCN) to 1000 cm-3 targeted at the marine stratus deck of the Pacific Ocean, where persistent lowclouds suggest a regional approach to cloud brightening. The impact ofthis regional geoengineering on global circulationand climate in the presence of a 1% annual increase of CO2 was investigated. Surface temperatures returned to nearpreindustrial levels over much of the globe with cloud modifications in place. In the first 40 years and over the 140-yr mean, significant cooling over the equatorial Pacific, continued Arctic warming, large precipitation changes over the western Pacific, and a westward compression and intensification of the Walker circulation were observed in response to cloud brightening. The cloud brightening caused a persistent La Nin~ a condition associated with an increase in hurricane maximumpotential intensity and genesis potential index, and decreased vertical wind shear between July and November in the tropical Atlantic, South China Sea, and to the east of Japan. Responses were similar with CCN=500 cm-3. © 2012 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52141
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States; Department of Earth and Planetary Sciences, The Johns Hopkins University, Baltimore, MD, United States; Department of Earth and Atmospheric Sciences, Cornell University, Ithaca, NY, United States; Atmospheric and Oceanic Sciences Program, Princeton University, Princeton, NJ, United States
Recommended Citation:
Baughman E.,Gnanadesikan A.,Degaetano A.,et al. Investigation of the surface and circulation impacts of cloud-brightening geoengineering[J]. Journal of Climate,2012-01-01,25(21)