DOI: 10.1175/JCLI-D-13-00559.1
Scopus记录号: 2-s2.0-84906883373
论文题名: Simulation of the global ENSO-tropical cyclone teleconnection by a high-resolution coupled general circulation model
作者: Bell R. ; Hodges K. ; Vidale P.L. ; Strachan J. ; Roberts M.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2014
卷: 27, 期: 17 起始页码: 6404
结束页码: 6422
语种: 英语
Scopus关键词: Atmospheric pressure
; Climate models
; Climatology
; Oceanography
; Atmospheric components
; Coupled atmosphere ocean general circulation model
; Coupled general circulation models
; Environmental conditions
; Environmental model
; Tropical cyclone activity
; Vertical wind shear
; Western North Pacific
; Hurricanes
英文摘要: This study assesses the influence of the El Niño-Southern Oscillation (ENSO) on global tropical cyclone activity using a 150-yr-long integration with a high-resolution coupled atmosphere-ocean general circulation model [High-Resolution Global Environmental Model (HiGEM); with N144 resolution:;90km in the atmosphere and 40km in the ocean]. Tropical cyclone activity is compared to an atmosphere-only simulation using the atmospheric component of HiGEM (HiGAM). Observations of tropical cyclones in the International Best Track Archive for Climate Stewardship (IBTrACS) and tropical cyclones identified in the Interim ECMWF Re-Analysis (ERA-Interim) are used to validate the models. Composite anomalies of tropical cyclone activity in El Niño and La Niña years are used. HiGEM is able to capture the shift in tropical cyclone locations to ENSO in the Pacific and Indian Oceans. However, HiGEM does not capture the expected ENSO-tropical cyclone teleconnection in the North Atlantic. HiGAM shows more skill in simulating the global ENSO-tropical cyclone teleconnection; however, variability in the Pacific is overpronounced.HiGAM is able to capture the ENSO-tropical cyclone teleconnection in the North Atlantic more accurately than HiGEM. An investigation into the large-scale environmental conditions, known to influence tropical cyclone activity, is used to further understand the response of tropical cyclone activity to ENSO in the North Atlantic and western North Pacific. The vertical wind shear response over the Caribbean is not captured in HiGEM compared to HiGAM and ERA-Interim. Biases in the mean ascent at 500 hPa in HiGEM remain in HiGAM over the western North Pacific; however, a more realistic low-level vorticity in HiGAM results in a more accurate ENSO-tropical cyclone teleconnection. © 2014 American Meteorological Society. 资助项目: NERC, Natural Environment Research Council
; NERC, Natural Environment Research Council
; NERC, Natural Environment Research Council
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51301
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Meteorology, University of Reading, Reading, United Kingdom; NERC Centre for Earth Observation, University of Reading, Reading, United Kingdom; National Centre for Atmospheric Science, Department of Meteorology, University of Reading, Reading, United Kingdom; Met Office Hadley Centre, Exeter, United Kingdom
Recommended Citation:
Bell R.,Hodges K.,Vidale P.L.,et al. Simulation of the global ENSO-tropical cyclone teleconnection by a high-resolution coupled general circulation model[J]. Journal of Climate,2014-01-01,27(17)