DOI: 10.1002/joc.5300
论文题名: Geomatic downscaling of temperatures in the Mont Blanc massif
作者: Joly D. ; Berger A. ; Buoncristiani J.-F. ; Champagne O. ; Pergaud J. ; Richard Y. ; Soare P. ; Pohl B.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2018
卷: 38, 期: 4 起始页码: 1846
结束页码: 1863
语种: 英语
英文关键词: Alps
; downscaling
; Mont Blanc massif
; mountain area
; temperature
Scopus关键词: Earth atmosphere
; Mean square error
; Rain
; Regression analysis
; Temperature
; Alps
; Atmospheric parameters
; Down-scaling
; Meteorological station
; Mont Blanc massif
; mountain area
; Regression coefficient
; Root mean square errors
; Atmospheric temperature
; air temperature
; climate effect
; downscaling
; model validation
; mountain region
; regional climate
; regression analysis
; spatial analysis
; topographic effect
; Alps
; Haute Savoie
; Mont Blanc
; Savoy Alps
; Western Alps
英文摘要: This article presents a novel downscaling method based on a geomatic spatial model. This model is constructed on the basis of regressions between topographical (explanatory) variables (digitized here at 200 m resolution) and climatic factors observed at meteorological stations. These regressions are used to calibrate the model in the form of two parameters: the frequency with which explanatory variables are significant at the 95% level, and the mean of the regression coefficient associated with each variable. One of the objectives of the article is to test the relevance of the method and the application made of it in this study bears on daily observed minimum (tn) and maximum (tx) temperatures in the Mont Blanc massif between 1979 and 2014. Estimations show weak statistical biases and the temperature variation from day to day is well represented. The root mean square errors of daily temperatures are of the order of 2 °C for tn and tx alike. The validation shows (1) the value of applying spatial models to two atmospheric configurations (weather regimes and local rainfall conditions) and (2) the limitations of the method. Eventually, this method shall be applied to the downscaling of large-scale atmospheric parameters provided by earth system models for projecting the temperature of the lower layers of the atmosphere over future decades. © 2017 Royal Meteorological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/117048
Appears in Collections: 气候减缓与适应
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作者单位: UMR 6049 THEMA, CNRS/Univ Bourgogne Franche-Comté, Besançon, France; Centre de Recherches de Climatologie, UMR 6282 Biogéosciences, CNRS/Univ Bourgogne Franche-Comté, Dijon, France; School of Geography and Earth Sciences, McMaster University, Hamilton, ON, Canada
Recommended Citation:
Joly D.,Berger A.,Buoncristiani J.-F.,et al. Geomatic downscaling of temperatures in the Mont Blanc massif[J]. International Journal of Climatology,2018-01-01,38(4)