DOI: 10.1007/s00382-012-1590-y
Scopus记录号: 2-s2.0-84891630937
论文题名: The meso-scale drivers of temperature extremes in high-latitude Fennoscandia
作者: Aalto J. ; le Roux P.C. ; Luoto M.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2014
卷: 42, 期: 2017-01-02 起始页码: 237
结束页码: 252
语种: 英语
英文关键词: Extreme temperatures
; Generalized additive models
; Subarctic Fennoscandia
; Variation partitioning
英文摘要: Extreme temperatures are key drivers controlling both biotic and abiotic processes, and may be strongly modified by topography and land cover. We modelled mean and extreme temperatures in northern Fennoscandia by combining digital elevation and land cover data with climate observations from northern Finland, Norway and Sweden. Multivariate partitioning technique was utilized to investigate the relative importance of environmental variables for the variation of the three temperature parameters: mean annual absolute minima and maxima, and mean annual temperature. Generalized additive modeling showed good performance, explaining 84-95 % of the temperature variation. The inclusion of remotely sensed variables improved significantly the modelling of thermal extremes in this system. The water cover variables and topography were the most important drivers of minimum temperatures, whereas elevation was the most important factor controlling maximum temperatures. The spatial variability of mean temperatures was clearly driven by geographical location and the effects of topography. Partitioning technique gave novel insights into temperature-environment relationship at the meso-scale and thus proved to be useful tool for the study of the extreme temperatures in the high-latitude setting. © 2012 Springer-Verlag Berlin Heidelberg. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54677
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Geosciences and Geography, University of Helsinki, Gustaf Hällströmin katu 2 a, BOX 64, 00014 Helsinki, Finland
Recommended Citation:
Aalto J.,le Roux P.C.,Luoto M.. The meso-scale drivers of temperature extremes in high-latitude Fennoscandia[J]. Climate Dynamics,2014-01-01,42(2017-01-02)