globalchange  > 气候变化事实与影响
DOI: 10.1175/JCLI-D-11-00201.1
Scopus记录号: 2-s2.0-84858190911
论文题名:
Late-twentieth-century simulation of arctic sea ice and ocean properties in the CCSM4
作者: Jahn A.; Sterling K.; Holland M.M.; Kay J.E.; Maslanik J.A.; Bitz C.M.; Bailey D.A.; Stroeve J.; Hunke E.C.; Lipscomb W.H.; Pollak D.A.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期:5
起始页码: 1431
结束页码: 1452
语种: 英语
Scopus关键词: Arctic ocean ; Arctic Sea ; Arctic sea ice ; Arctic shelf ; Community climate system model ; Deep-water formation ; Ensemble members ; Ensemble simulation ; Ice cover ; Internal variability ; Multi-model ensemble ; Ocean properties ; Ocean state ; Sea ice extent ; Sea ice motion ; Sea-ice edge ; Sea-ice thickness ; Temporal evolution ; Climate change ; Climate models ; Computer simulation ; Sea level ; Sea ice ; climate modeling ; computer simulation ; continental shelf ; ensemble forecasting ; gyre ; ice cover ; ice mechanics ; ice thickness ; sea ice ; sea level pressure ; trend analysis ; twentieth century ; water temperature ; Arctic Ocean ; Beaufort Sea
英文摘要: To establish how well the new Community Climate System Model, version 4 (CCSM4) simulates the properties of the Arctic sea ice and ocean, results from six CCSM4 twentieth-century ensemble simulations are compared here with the available data. It is found that the CCSM4 simulations capture most of the important climatological features of the Arctic sea ice and ocean state well, among them the sea ice thickness distribution, fraction of multiyear sea ice, and sea ice edge. The strongest bias exists in the simulated spring-tofall sea ice motion field, the location of the Beaufort Gyre, and the temperature of the deep Arctic Ocean (below 250 m), which are caused by deficiencies in the simulation of the Arctic sea level pressure field and the lack of deep-water formation on the Arctic shelves. The observed decrease in the sea ice extent and the multiyear ice cover is well captured by the CCSM4. It is important to note, however, that the temporal evolution of the simulated Arctic sea ice cover over the satellite era is strongly influenced by internal variability. For example, while one ensemble member shows an even larger decrease in the sea ice extent over 1981-2005 than that observed, two ensemble members show no statistically significant trend over the same period. It is therefore important to compare the observed sea ice extent trend not just with the ensemble mean or a multimodel ensemble mean, but also with individual ensemble members, because of the strong imprint of internal variability on these relatively short trends. © 2012 American Meteorological Society.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52498
Appears in Collections:气候变化事实与影响

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作者单位: National Center for Atmospheric Research, Boulder, CO, United States; International Arctic Research Center, University of Alaska at Fairbanks, Fairbanks, AK, United States; NOAA/NWS/West Coast and Alaska Tsunami Warning Center, Palmer, AK, United States; Colorado Center for Astrodynamics Research, University of Colorado, Boulder, CO, United States; Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States; National Snow and Ice Data Center, Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, United States; Climate, Ocean and Sea Ice Modeling Program, Los Alamos National Laboratory, Los Alamos, NM, United States; College of Earth and Mineral Sciences, The Pennsylvania State University, University Park, PA, United States

Recommended Citation:
Jahn A.,Sterling K.,Holland M.M.,et al. Late-twentieth-century simulation of arctic sea ice and ocean properties in the CCSM4[J]. Journal of Climate,2012-01-01,25(5)
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