DOI: 10.1007/s00382-016-3053-3
Scopus记录号: 2-s2.0-84960379981
论文题名: Mistral and Tramontane wind speed and wind direction patterns in regional climate simulations
作者: Obermann A. ; Bastin S. ; Belamari S. ; Conte D. ; Gaertner M.A. ; Li L. ; Ahrens B.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2018
卷: 51, 期: 3 起始页码: 1059
结束页码: 1076
语种: 英语
英文关键词: Bayesian network
; Evaluation
; Mistral
; Model intercomparison
; Regional climate models
; Tramontane
Scopus关键词: air-sea interaction
; Bayesian analysis
; climate modeling
; regional climate
; spatial variation
; wind direction
; wind velocity
; France
; Mediterranean Sea
; Mediterranean Sea (Northwest)
英文摘要: The Mistral and Tramontane are important wind phenomena that occur over southern France and the northwestern Mediterranean Sea. Both winds travel through constricting valleys before flowing out towards the Mediterranean Sea. The Mistral and Tramontane are thus interesting phenomena, and represent an opportunity to study channeling effects, as well as the interactions between the atmosphere and land/ocean surfaces. This study investigates Mistral and Tramontane simulations using five regional climate models with grid spacing of about 50 km and smaller. All simulations are driven by ERA-Interim reanalysis data. Spatial patterns of surface wind, as well as wind development and error propagation along the wind tracks from inland France to offshore during Mistral and Tramontane events, are presented and discussed. To disentangle the results from large-scale error sources in Mistral and Tramontane simulations, only days with well simulated large-scale sea level pressure field patterns are evaluated. Comparisons with the observations show that the large-scale pressure patterns are well simulated by the considered models, but the orographic modifications to the wind systems are not well simulated by the coarse-grid simulations (with a grid spacing of about 50 km), and are reproduced slightly better by the higher resolution simulations. On days with Mistral and/or Tramontane events, most simulations underestimate (by 13 % on average) the wind speed over the Mediterranean Sea. This effect is strongest at the lateral borders of the main flow—the flow width is underestimated. All simulations of this study show a clockwise wind direction bias over the sea during Mistral and Tramontane events. Simulations with smaller grid spacing show smaller biases than their coarse-grid counterparts. © 2016, The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109185
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: Institut für Atmosphäre und Umwelt, Goethe Universität Frankfurt, Altenhöferallee 1, Frankfurt am Main, 60438, Germany; LATMOS/IPSL, 11 bd d’Alembert, Guyancourt, 78280, France; CNRM/GAME, Météo-France/CNRS, Toulouse, France; CMCC, Via Augusto Imperatore 16, Lecce, 73100, Italy; UCLM, AVDA. CARLOS III, S/N E45071, Toledo, Spain; LMD/UPMC/CNRS, 4 Place Jussieu, Paris, 75005, France
Recommended Citation:
Obermann A.,Bastin S.,Belamari S.,et al. Mistral and Tramontane wind speed and wind direction patterns in regional climate simulations[J]. Climate Dynamics,2018-01-01,51(3)