DOI: 10.5194/tc-12-741-2018
Scopus记录号: 2-s2.0-85042702599
论文题名: Effects of short-term variability of meteorological variables on soil temperature in permafrost regions
作者: Beer C ; , Porada P ; , Ekici A ; , Brakebusch M
刊名: Cryosphere
ISSN: 19940416
出版年: 2018
卷: 12, 期: 2 起始页码: 741
结束页码: 757
语种: 英语
英文关键词: active layer
; bryophyte
; climate change
; data set
; diffusivity
; lichen
; permafrost
; soil temperature
; warming
; Arctic
; bryophytes
英文摘要: Effects of the short-term temporal variability of meteorological variables on soil temperature in northern high-latitude regions have been investigated. For this, a process-oriented land surface model has been driven using an artificially manipulated climate dataset. Short-term climate variability mainly impacts snow depth, and the thermal diffusivity of lichens and bryophytes. These impacts of climate variability on insulating surface layers together substantially alter the heat exchange between atmosphere and soil. As a result, soil temperature is 0.1 to 0.8 °C higher when climate variability is reduced. Earth system models project warming of the Arctic region but also increasing variability of meteorological variables and more often extreme meteorological events. Therefore, our results show that projected future increases in permafrost temperature and active-layer thickness in response to climate change will be lower (i) when taking into account future changes in short-term variability of meteorological variables and (ii) when representing dynamic snow and lichen and bryophyte functions in land surface models. © Author(s) 2018. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75408
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: Department of Environmental Science and Analytical Chemistry (ACES), Stockholm University, Stockholm, Sweden; Bolin Centre for Climate Research, Stockholm University, Stockholm, Sweden; Uni Research Climate, Bjerknes Centre for Climate Research, Bergen, Norway
Recommended Citation:
Beer C,, Porada P,, Ekici A,et al. Effects of short-term variability of meteorological variables on soil temperature in permafrost regions[J]. Cryosphere,2018-01-01,12(2)