DOI: 10.1016/j.atmosres.2017.10.005
Scopus记录号: 2-s2.0-85032219455
论文题名: Assessment of the role of sea surface fluxes on eastern Mediterranean explosive cyclogenesis with the aid of the limited-area model COSMO.GR
作者: Kouroutzoglou J. ; Avgoustoglou E.N. ; Flocas H.A. ; Hatzaki M. ; Skrimizeas P. ; Keay K.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2018
卷: 208 起始页码: 132
结束页码: 147
语种: 英语
英文关键词: COSMO.GR model
; Diabatic heating
; Explosive cyclogenesis
; Mediterranean
; Sea surface roughness
Scopus关键词: Climate change
; Explosives
; Heat flux
; Sea level
; Storms
; Surface roughness
; Diabatic heating
; Eastern Mediterranean
; Explosive cyclogenesis
; Limited area models
; Mean sea level pressures
; Mediterranean
; Non-adiabatic dynamics
; Sea surface roughness
; Surface waters
; climate modeling
; cyclogenesis
; diabatic process
; extratropical cyclone
; extratropical environment
; heat flux
; Mediterranean environment
; sea surface
; storm track
; surface roughness
; synoptic meteorology
; Mediterranean Sea
; Mediterranean Sea (East)
英文摘要: Explosive cyclogenesis, being characterised by complex non adiabatic dynamics at low levels, is difficult to be predicted by operational models, especially in closed maritime regions such as the Mediterranean Sea. The objective of this study is to examine the sensitivity of the limited-area atmospheric model COSMO.GR, which runs operationally at the Hellenic National Meteorological Service (HNMS) as a forecast tool, in effectively simulating the deepening rate and to further explore the role of sea surface heat fluxes for two cases of explosive cyclogenesis in the eastern Mediterranean. Model runs were performed for six different values of the sea roughness model parameter, being proven, among others, to significantly affect the evolution of sea surface heat fluxes. The simulation justified the crucial role of sea surface heat fluxes in explosive cyclogenesis in the eastern Mediterranean by influencing the cyclone deepening rates and the respective minimum values of mean seal level pressure. The smaller values of the sea roughness parameter as compared to the default model value (equal to 20), leads to significant enhancement of the simulated sea surface heat fluxes and in turn produces higher deepening rates during the explosive deepening period. For both cases, the evaluation of the simulated mean sea level pressure values against observations demonstrated that values 10 and 1 better simulated the evolution of the mean sea level pressure along the cyclonic tracks. The results of this study act as a motivation to test the role of specific parameters in operational models associated with diabatic processes towards the improvement of local forecasts, mainly during severe phenomena. © 2017 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/108874
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: Hellenic National Meteorological Service, El. Benizelou 14, Hellinicon, Athens, GR16777, Greece; Sector of Environmental Physics and Meteorology, Department of Physics, National and Kapodistrian University of Athens, University Campus, Athens, GR15784, Greece; Sector of Geography and Climatology, Department of Geology of Geoenvironment, National and Kapodistrian University of Athens, University Campus, Athens, GR15784, Greece; Bureau of Meteorology, Melbourne, VIC 3001, Australia
Recommended Citation:
Kouroutzoglou J.,Avgoustoglou E.N.,Flocas H.A.,et al. Assessment of the role of sea surface fluxes on eastern Mediterranean explosive cyclogenesis with the aid of the limited-area model COSMO.GR[J]. Atmospheric Research,2018-01-01,208