DOI: 10.1007/s00382-012-1290-7
Scopus记录号: 2-s2.0-84867098143
论文题名: The ability of general circulation models to simulate tropical cyclones and their precursors over the North Atlantic main development region
作者: Daloz A.S. ; Chauvin F. ; Walsh K. ; Lavender S. ; Abbs D. ; Roux F.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2012
卷: 39, 期: 2017-07-08 起始页码: 1559
结束页码: 1576
语种: 英语
英文关键词: African Easterly Wave (AEW)
; General Circulation Model (GCM)
; Precursor
; Tropical cyclone (TC)
英文摘要: The ability of General Circulation Models (GCMs) to generate Tropical Cyclones (TCs) over the North Atlantic Main Development Region (MDR; 10-20°N, 20-80°W; Goldenberg and Shapiro in J Clim 9:1169-1187, 1996) is examined through a subset of ocean-atmosphere coupled simulations from the World Climate Research Programme (WCRP) Coupled Model Intercomparison Project phase 3 (CMIP3) multimodel data set and a high-resolution (0. 5°) Sea Surface Temperature (SST)-forced simulation from the Australian Conformal-Cubic Atmospheric Model GCM. The results are compared with National Center for Environmental Prediction (NCEP-2) and European Center for Medium Range Weather Forecasts Re-Analysis (ERA-40) reanalyses over a common period from 1980 to 1998. Important biases in the representation of the TC activity are encountered over the MDR. This study emphasizes the strong link in the GCMs between African Easterly Waves (AEWs) and TC activity in this region. However, the generation of AEWs is not a sufficient condition alone for the models to produce TCs. Precipitation over the Sahel, especially rainfall over the Fouta Djallon highlands (cf. Fig. 1), is playing a role in the generation of TCs over the MDR. The influence of large-scale fields such as SST, vertical wind shear and tropospheric humidity on TC genesis is also examined. The ability of TC genesis indices, such as the Genesis Potential Index and the Convective Yearly Genesis Potential, to represent TC activity over the MDR in simulations at low to high spatial resolutions is analysed. These indices are found to be a reasonable method for comparing cyclogenesis in different models, even though other factors such as AEW activity should also be considered. © 2012 Springer-Verlag. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/55147
Appears in Collections: 过去全球变化的重建
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作者单位: Groupe de Modélisation Grande Echelle et Climat, CNRM-GAME, Météo-France, 42 avenue G. Coriolis, 31057 Toulouse Cedex 1, France; School of Earth Sciences, University of Melbourne, Melbourne, VIC, Australia; CSIRO Atmospheric and Marine Research, Aspendale, VIC, Australia; Laboratoire d'Aérologie, Université de Toulouse and Centre National de la Recherche Scientifique, Toulouse, France
Recommended Citation:
Daloz A.S.,Chauvin F.,Walsh K.,et al. The ability of general circulation models to simulate tropical cyclones and their precursors over the North Atlantic main development region[J]. Climate Dynamics,2012-01-01,39(2017-07-08)