DOI: 10.1007/s00382-016-3394-y
Scopus记录号: 2-s2.0-84992061044
论文题名: Impact of the internal variability on the cyclone tracks simulated by a regional climate model over the Med-CORDEX domain
作者: Sanchez-Gomez E. ; Somot S.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2018
卷: 51, 期: 3 起始页码: 1005
结束页码: 1021
语种: 英语
英文关键词: Internal variability
; Mediterranean cyclones
; Regional climate modelling
; Uncertainties
Scopus关键词: climate effect
; climate modeling
; climate variation
; cyclone
; regional climate
; storm track
; uncertainty analysis
; Mediterranean Region
英文摘要: Regional climate models (RCMs) constitute a powerful tool to study and understand climate variability and change at local scales. Nevertheless, to correctly interpret regional climate simulations, a number of uncertainties need to be considered. In this study, we investigate the so-called Internal Variability (IV) of an RCM. The IV can be defined as the degree of irreproducibility in an RCM solution observed when it is conducted by the same lateral boundary conditions (LBCs) but initialised from different initial states. The main goal of this work is to investigate how the IV affects the cyclone tracks simulated by an RCM over a Mediterranean domain. For standard variables such as sea level pressure, 2 m temperature and precipitation, our results over the Mediterranean region are consistent with studies conducted over other geographical domains: the IV is stronger at the easternmost part of the domain, where the control exerted by the LBCs is weaker; the IV shows a strong seasonal dependence, reaching larger values in summer than in winter. We show here that the IV values associated with the density of cyclone tracks are much stronger than for the other documented variables, reaching more than 50 % of the estimated total variability. Concerning the cyclone characteristics, long travelling tracks are associated to a greatest IV. Within the latter cyclone category, the fast moving cyclones seems to exhibit also larger IV values. A secondary IV maximum is observed for static cyclones with short travelling distances (thermal lows) during the warm season. © 2016, The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109190
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: CERFACS/CNRS-CECI, 42 Av. G. Coriolis, Toulouse Cedex, 31057, France; Meteo-France/CNRS, CNRM, 42, Av. G. Coriolis, Toulouse, France
Recommended Citation:
Sanchez-Gomez E.,Somot S.. Impact of the internal variability on the cyclone tracks simulated by a regional climate model over the Med-CORDEX domain[J]. Climate Dynamics,2018-01-01,51(3)