DOI: 10.1016/j.atmosres.2017.11.023
Scopus记录号: 2-s2.0-85039552534
论文题名: PBL parameterization schemes sensitivity analysis on WRF modeling of a tornadic event environment in Skala Lakonia in September 2015
作者: Mylonas M.P. ; Nastos P.T. ; Matsangouras I.T.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2018
卷: 208 起始页码: 116
结束页码: 131
语种: 英语
英文关键词: Mesoscale modeling
; Model parameterizations
; Planetary boundary layer
; Thermodynamic indices
; Tornado
Scopus关键词: Atmospheric thermodynamics
; Boundary layers
; Image resolution
; Image segmentation
; Parameterization
; Potential energy
; Remote sensing
; Sensitivity analysis
; Thermodynamics
; Tornadoes
; Convective available potential energies
; Lateral boundary conditions
; Local and non-local closures
; Meso-scale modeling
; Parameterization schemes
; Planetary boundary layers
; Thermodynamic characteristics
; Weather research and forecasting
; Weather forecasting
; boundary layer
; mesoscale meteorology
; numerical model
; parameterization
; sensitivity analysis
; thermodynamics
; tornado
; weather forecasting
; Greece
; Laconia
; Peloponnisos
英文摘要: The aim of the present study is the evaluation of the thermodynamic characteristics of a high impact tornadic event in Skala Lakonia, southern Peloponnese, on September 21, 2015. The study was carried out using the Weather Research and Forecasting (AR-WRF) mesoscale model allowing high spatial resolution for the analysis. For the particular model setup used in this study, different planetary boundary layer (PBL) parameterization schemes were tested. The current study downscales ECMWF reanalysis initial and lateral boundary conditions to 1 km spatial resolution to assess the mixing layer convective available potential energy (MLCAPE – MCAPE hereafter), the reflectivity perceived by radar (dBZ), the storm relative helicity (SRH) and the energy helicity index (EHI) for the different PBL schemes. The validation was conducted using in situ and remote sensing observations of the surrounding area. The results illustrate deep convective activity with MCAPE values indicating a strong instability in the region of interest using both local and non-local closure PBL schemes. The study evaluates the affectability of the PBL physical processes with regard to the thermodynamic variables on the model performance. Finally, Mellor Yamada Janjic local (MYJ) closure PBL scheme is the best PBL scheme for studying this tornado since its simulation results display deep convection activity along with the highest validation scores. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/108879
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: Laboratory of Climatology and Atmospheric Environment, Faculty of Geology and Geoenvironment, National and Kapodistrian University of Athens, University Campus, Athens, GR 15784, Greece; Hellenic National Meteorological Service, Athens, Greece
Recommended Citation:
Mylonas M.P.,Nastos P.T.,Matsangouras I.T.. PBL parameterization schemes sensitivity analysis on WRF modeling of a tornadic event environment in Skala Lakonia in September 2015[J]. Atmospheric Research,2018-01-01,208