DOI: 10.1175/JCLI-D-15-0540.1
Scopus记录号: 2-s2.0-84957827968
论文题名: Climatology of wind, kinetic energy, and temperature spectra using a high-resolution climate model for mid-Europe
作者: Zentek R. ; Heinemann G. ; Sachs E.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2016
卷: 29, 期: 3 起始页码: 963
结束页码: 974
语种: 英语
Scopus关键词: Boundary layers
; Cosine transforms
; Fourier analysis
; Fourier transforms
; Kinetic energy
; Kinetics
; Spectroscopy
; Spectrum analysis
; Model output statistics
; Numerical analysis/modeling
; Seasonal variability
; Spectral analysis/models/distribution
; Statistical techniques
; Variability
; Climate models
; air temperature
; climate modeling
; climatology
; kinetic energy
; numerical model
; regional climate
; seasonal variation
; spectral analysis
; wind
; Europe
英文摘要: Spectra of wind, kinetic energy, and temperature are investigated for a dataset of 10 years of regional climate simulations for mid-Europe. The nonhydrostatic Consortium for Small-Scale Modeling (COSMO) model in Climate Mode [COSMO-CLM (CCLM)] climate model is used in a hindcast mode for 1991-2000. The three-step nesting chain starts with a CCLM run with 18-km resolution covering all of Europe nested in ERA-40 reanalyses and then a run with a resolution of 4.4 km is performed for mid-Europe. Finally, the 1.3-km run focuses on the region of mid-Germany and Luxembourg. In the present study, only results for the 4.4- and 1.3-km runs are shown. Different methods based on the Fourier and cosine transformations for the computation of the spectra are evaluated. The kinetic energy spectra show the expected -5/3 slope in the mesoscale (up to the effective resolution), while the spectrum of the vertical wind shows a zero-slope behavior. The spectra of the horizontal wind components and temperature compare well to the observations. The effective model resolution was found to be about 7-10 (5-7) times the horizontal grid spacing for the one-dimensional (two-dimensional) spectral methods. A comparison between the different model resolutions shows a benefit of the 1.3-km simulations for the boundary layer for horizontal scales up to 25 km. The multiyear time-scale simulations allow for a climatological study of the seasonal cycle. The kinetic energy spectrum is found to have the largest values in summer. © 2016 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50143
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Department of Environmental Meteorology, University of Trier, Trier, Germany; Department of Mathematics, University of Trier, Trier, Germany
Recommended Citation:
Zentek R.,Heinemann G.,Sachs E.. Climatology of wind, kinetic energy, and temperature spectra using a high-resolution climate model for mid-Europe[J]. Journal of Climate,2016-01-01,29(3)