DOI: 10.1002/2016MS000700
Scopus记录号: 2-s2.0-85007293943
论文题名: Assessment of the simulation of Indian Ocean Dipole in the CESM—Impacts of atmospheric physics and model resolution
作者: Yao Z ; , Tang Y ; , Chen D ; , Zhou L ; , Li X ; , Lian T ; , Ul Islam S
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2016
卷: 8, 期: 4 起始页码: 1932
结束页码: 1952
语种: 英语
英文关键词: Atmospheric thermodynamics
; Feedback
; Geophysics
; Locks (fasteners)
; Rain
; Stream flow
; Wind
; Bjerknes feedback
; CESM
; Community atmosphere model
; Eastern equatorial Indian ocean
; Equatorial Indian Ocean
; Indian Ocean dipole
; Indian summer monsoon
; Subsurface temperature
; Oceanography
; air-sea interaction
; assessment method
; atmospheric modeling
; climate modeling
; El Nino-Southern Oscillation
; Indian Ocean Dipole
; Indian Ocean tsunami 2004
; physics
; rainfall
; sea surface temperature
; summer
; teleconnection
; thermocline
; Indian Ocean
; Indian Ocean (Equatorial)
; Indian Ocean (Tropical)
英文摘要: This study examines the possible impacts of coupling processes on simulations of the Indian Ocean Dipole (IOD). Emphasis is placed on the atmospheric model resolution and physics. Five experiments were conducted for this purpose, including one control run of the ocean-only model, four coupled experiments using two different versions of the Community Atmosphere Model (CAM4 and CAM5) and two different resolutions. The results show that the control run could effectively simulate various features of the IOD. The coupled experiments run at the higher resolution yielded more realistic IOD period and intensity than their counterparts at the low resolution. The coupled experiments using CAM5 generally showed a better simulation skill in the tropical Indian SST climatology and phase-locking than those using CAM4, but the wind anomalies were stronger and the IOD period were longer in the former experiments than in the latter. In all coupled experiments, the IOD intensity was much stronger than the observed intensity, which is attributable to wind-thermocline depth feedback and thermocline depth-subsurface temperature feedback. The CAM5 physics seems beneficial for the simulation of summer rainfall over the eastern equatorial Indian Ocean and the CAM4 physics tends to produce less biases over the western equatorial Indian Ocean, whereas the higher resolution tends to generate unrealistically strong meridional winds. The IOD-ENSO relationship was captured reasonably well in coupled experiments, with improvements in CAM5 relative to CAM4. However, the teleconnection of the IOD-Indian summer monsoon and ENSO-Indian summer monsoon was not realistically simulated in all experiments. © 2016. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75849
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: College of Ocean and Earth Sciences, Xiamen University, Xiamen, China; State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Hangzhou, China; Environmental Science and Engineering, University of Northern British Columbia, Prince George, BC, Canada
Recommended Citation:
Yao Z,, Tang Y,, Chen D,et al. Assessment of the simulation of Indian Ocean Dipole in the CESM—Impacts of atmospheric physics and model resolution[J]. Journal of Advances in Modeling Earth Systems,2016-01-01,8(4)