globalchange  > 气候变化事实与影响
DOI: 10.1175/JCLI-D-12-00845.1
Scopus记录号: 2-s2.0-84890193101
论文题名:
Examining internal and external contributors to greenland climate variability using CCSM3
作者: Andres H.J.; Peltier W.R.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2013
卷: 26, 期:24
起始页码: 9745
结束页码: 9773
语种: 英语
Scopus关键词: Climate variability ; Decadal variability ; General circulation model ; Ice sheet ; Multidecadal variability ; Paleoclimates ; Atmospheric aerosols ; Atmospheric pressure ; Climate models ; Climatology ; Computer simulation ; Incident solar radiation ; Regression analysis ; Sea ice ; Volcanoes ; Oceanography ; Atlantic Multidecadal Oscillation ; climate forcing ; climate modeling ; climate variation ; El Nino-Southern Oscillation ; ice sheet ; meridional circulation ; multivariate analysis ; North Atlantic Oscillation ; overturn ; Pacific Decadal Oscillation ; paleoclimate ; paleotemperature ; precipitation assessment ; Arctic ; Greenland
英文摘要: Greenland climate variability is connected to internal and external sources of global climate forcing in six millennium simulations using Community Climate System Model, version 3. The external forcings employed are consistent with the protocols of PaleoclimateModelling Intercomparison Project Phase 3.Many simulated internal climatemodes are characterized over the years 850-1850, including theAtlanticmeridional overturning circulation (AMOC), the Atlantic multidecadal oscillation (AMO), the east Atlantic pattern (EA), the El Ni~no-Southern Oscillation, the North Atlantic Oscillation (NAO), the North Atlantic sea ice extent, and the Pacific decadal oscillation (PDO). Lagged correlation and multivariate regression methods connect Greenland temperatures and precipitation to these internal modes and external sources of climate variability. Greenland temperature and precipitation are found to relate most strongly to North Atlantic sea ice extent, the AMO, and the AMOC, that are themselves strongly interconnected. Furthermore, approximately half of the multidecadal variability in Greenland temperature and precipitation are captured through linear relationships with volcanic aerosol optical depth, solar insolation (including total solar irradiance and local orbital variability), the NAO, the EA, and the PDO. Relationships are robust with volcanic aerosol optical depth, solar insolation, and an index related to latitudinal shifts of the North Atlantic jet. Differences attributable to model resolution are also identified in the results, such as lower variability in the AMOC and Greenland temperature in the higher-resolution simulations. Finally, a regression model is applied to simulations of the industrial period to show that natural sources alone only explain the variability in simulated Greenland temperature and precipitation up to the 1950s and 1970s, respectively. © 2013 American Meteorological Society.
资助项目: NOAA, National Oceanic and Atmospheric Administration
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51481
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作者单位: Department of Physics, University of Toronto, Toronto, ON, Canada

Recommended Citation:
Andres H.J.,Peltier W.R.. Examining internal and external contributors to greenland climate variability using CCSM3[J]. Journal of Climate,2013-01-01,26(24)
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