DOI: 10.1175/JCLI-D-11-00444.1
Scopus记录号: 2-s2.0-84867678115
论文题名: Coupled ocean-atmosphere variations over the South Atlantic Ocean
作者: Nobre P. ; De Almeida R.A. ; Malagutti M. ; Giarolla E.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期: 18 起始页码: 6349
结束页码: 6358
语种: 英语
Scopus关键词: Atmosphere-ocean interactions
; Atmospheric circulation
; Atmospheric data
; Atmospheric general circulation models
; Atmospheric model
; Climate studies
; Climate system
; Convergence zones
; Coupled mode
; Coupled models
; General circulation model
; Intertropical convergence zone
; Model evaluation
; Model results
; Moored arrays
; Ocean temperature
; Ocean-atmosphere
; Ocean-atmosphere interactions
; Ocean-atmosphere models
; Reanalysis
; Sea surface temperature (SST)
; Seasonal forecasting
; South Atlantic
; Summer rainfall
; Time-scales
; Tropical atlantic
; Uncoupled models
; Weather forecasts
; Climate change
; Computer simulation
; Meteorology
; Tropics
; Weather forecasting
; Oceanography
; air-sea interaction
; atmosphere-ocean coupling
; atmospheric general circulation model
; atmospheric modeling
; climate variation
; ensemble forecasting
; intertropical convergence zone
; rainfall
; sea surface temperature
; seasonal variation
; summer
; weather forecasting
; Atlantic Ocean
; Atlantic Ocean (South)
英文摘要: The impact of ocean-atmosphere interactions on summer rainfall over the South Atlantic Ocean is explored through the use of coupled ocean-atmosphere models. The Brazilian Center for Weather Forecast and Climate Studies (CPTEC) coupled ocean-atmosphere general circulation model (CGCM) and its atmospheric general circulation model (AGCM) are used to gauge the role of coupled modes of variability of the climate system over the South Atlantic at seasonal time scales. Twenty-six years of summer [December- February (DJF)] simulations were done with the CGCM in ensemble mode and the AGCM forced with both observed sea surface temperature (SST) and SST generated by the CGCM forecasts to investigate the dynamics/thermodynamics of the two major convergence zones in the tropical Atlantic: the intertropical convergence zone (ITCZ) and the South Atlantic convergence zone (SACZ). The results present both numerical model and observational evidence supporting the hypothesis that the ITCZ is a thermally direct, SSTdriven atmospheric circulation, while the SACZ is a thermally indirect atmospheric circulation controlling SST variability underneath-a consequence of ocean-atmosphere interactions not captured by the atmospheric model forced by prescribed ocean temperatures. Six CGCM model results of the Ensemble-based Predictions of Climate Changes and their Impacts (ENSEMBLES) project, NCEP-NCAR reanalysis data, and oceanic and atmospheric data from buoys of the Prediction and Research Moored Array in the Tropical Atlantic (PIRATA) Project over the tropical Atlantic are used to validate CPTEC's coupled and uncoupled model simulations. © 2012 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52235
Appears in Collections: 气候变化事实与影响
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作者单位: National Institute for Space Research (INPE), Cachoeira Paulista, Brazil
Recommended Citation:
Nobre P.,De Almeida R.A.,Malagutti M.,et al. Coupled ocean-atmosphere variations over the South Atlantic Ocean[J]. Journal of Climate,2012-01-01,25(18)