DOI: 10.1175/JCLI-D-11-00091.1
Scopus记录号: 2-s2.0-84155180312
论文题名: The CCSM4 ocean component
作者: Danabasoglu G. ; Bates S.C. ; Briegleb B.P. ; Jayne S.R. ; Jochum M. ; Large W.G. ; Peacock S. ; Yeager S.G.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期: 5 起始页码: 1361
结束页码: 1389
语种: 英语
Scopus关键词: Atmospheric model
; Community climate system model
; Control simulation
; Coupled systems
; Current structure
; General circulation model
; Model change
; Near-surface
; New solutions
; North Atlantic
; North Atlantic Currents
; Ocean circulation
; Ocean model
; Pacific ocean
; Parameterizations
; Parameterized
; Physical process
; Potential temperature
; Pre-industrial
; Sea surface temperature (SST)
; Spin-up
; C (programming language)
; Climate models
; Computer simulation
; Heat losses
; Parameterization
; Salinity measurement
; Oceanography
; climate change
; climate modeling
; computer simulation
; equatorial dynamics
; general circulation model
; oceanic circulation
; oceanic current
; parameterization
; potential temperature
; salinity
; sea surface temperature
; twentieth century
; water flow
; Atlantic Ocean
; Atlantic Ocean (North)
; Pacific Ocean
英文摘要: The ocean component of the Community Climate System Model version 4 (CCSM4) is described, and its solutions from the twentieth-century (20C) simulations are documented in comparison with observations and those of CCSM3. The improvements to the ocean model physical processes include new parameterizations to represent previously missing physics and modifications of existing parameterizations to incorporate recent new developments. In comparison with CCSM3, the new solutions show some significant improvements that can be attributed to these model changes. These include a better equatorial current structure, a sharper thermocline, and elimination of the cold bias of the equatorial cold tongue all in the Pacific Ocean; reduced sea surface temperature (SST) and salinity biases along the North Atlantic Current path; and much smaller potential temperature and salinity biases in the near-surface Pacific Ocean. Other improvements include a global-mean SST that is more consistent with the present-day observations due to a different spinup procedure from that used in CCSM3. Despite these improvements, many of the biases present in CCSM3 still exist in CCSM4. A major concern continues to be the substantial heat content loss in the ocean during the preindustrial control simulation from which the 20C cases start. This heat loss largely reflects the top of the atmospheric model heat loss rate in the coupled system, and it essentially determines the abyssal ocean potential temperature biases in the 20C simulations. There is also a deep salty bias in all basins. As a result of this latter bias in the deep North Atlantic, the parameterized overflow waters cannot penetrate much deeper than in CCSM3. © 2012 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52493
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; Woods Hole Oceanographic Institution, Woods Hole, MA, United States; National Center for Atmospheric Research, Boulder, CO, United States
Recommended Citation:
Danabasoglu G.,Bates S.C.,Briegleb B.P.,et al. The CCSM4 ocean component[J]. Journal of Climate,2012-01-01,25(5)