DOI: 10.1175/JCLI-D-11-00301.1
Scopus记录号: 2-s2.0-84858607677
论文题名: ENSO and pacific decadal variability in the community climate system model version 4
作者: Deser C. ; Phillips A.S. ; Tomas R.A. ; Okumura Y.M. ; Alexander M.A. ; Capotondi A. ; Scott J.D. ; Kwon Y.-O. ; Ohba M.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期: 8 起始页码: 2622
结束页码: 2651
语种: 英语
Scopus关键词: Atmosphere-ocean interactions
; EL Nino
; ENSO
; La nina
; Pacific decadal oscillation
; Atmospheric pressure
; Climate control
; Climatology
; Computer simulation
; Nickel compounds
; Climate models
; amplitude
; atmosphere-ocean coupling
; atmospheric circulation
; climate modeling
; El Nino
; El Nino-Southern Oscillation
; La Nina
; Pacific Decadal Oscillation
; precipitation (climatology)
; sea surface temperature
; zonal wind
英文摘要: This study presents an overview of the El Niño-Southern Oscillation (ENSO) phenomenon and Pacific decadal variability (PDV) simulated in a multicentury preindustrial control integration of the NCAR Community Climate System Model version 4 (CCSM4) at nominal 1° latitude-longitude resolution. Several aspects of ENSO are improved in CCSM4 compared to its predecessor CCSM3, including the lengthened period (3-6 yr), the larger range of amplitude and frequency of events, and the longer duration of La Niña compared to El Niño. However, the overall magnitude of ENSO in CCSM4 is overestimated by ~30%. The simulated ENSO exhibits characteristics consistent with the delayed/recharge oscillator paradigm, including correspondence between the lengthened period and increased latitudinal width of the anomalous equatorial zonal wind stress. Global seasonal atmospheric teleconnections with accompanying impacts on precipitation and temperature are generally well simulated, although the wintertime deepening of the Aleutian low erroneously persists into spring. The vertical structure of the upper-ocean temperature response to ENSO in the north and south Pacific displays a realistic seasonal evolution, with notable asymmetries between warm and cold events. The model shows evidence of atmospheric circulation precursors over the North Pacific associated with the "seasonal footprinting mechanism," similar to observations. Simulated PDV exhibits a significant spectral peak around 15 yr, with generally realistic spatial pattern and magnitude. However, PDV linkages between the tropics and extratropics are weaker than observed. © 2012 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52449
Appears in Collections: 气候变化事实与影响
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作者单位: Climate and Global Dynamics Division, NCAR, Boulder, CO, United States; NOAA/Earth System Research Laboratory, Boulder, CO, United States; Woods Hole Oceanographic Institution, Woods Hole, MA, United States; Central Research Institute of Electric Power Industry, Abiko, Japan
Recommended Citation:
Deser C.,Phillips A.S.,Tomas R.A.,et al. ENSO and pacific decadal variability in the community climate system model version 4[J]. Journal of Climate,2012-01-01,25(8)