DOI: 10.1002/joc.5672
论文题名: Winter hoar frost conditions on Swedish roads in a warming climate
作者: Hu Y. ; Ou T. ; Huang J. ; Gustavsson T. ; Bogren J.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2018
卷: 38, 期: 12 起始页码: 4345
结束页码: 4354
语种: 英语
英文关键词: climate change
; hoar frost risk
; North Atlantic oscillation
; relative humidity
; road surface temperature
; Sweden
Scopus关键词: Atmospheric humidity
; Atmospheric pressure
; Atmospheric temperature
; Roads and streets
; Snow and ice removal
; Surface properties
; Adaptation strategies
; Hoar frosts
; In-situ observations
; North Atlantic oscillations
; Road surface temperature
; Road weather information system
; Sweden
; Winter North Atlantic Oscillation
; Climate change
; climate change
; hoar frost
; North Atlantic Oscillation
; relative humidity
; road
; surface temperature
; warming
; winter
; Sweden
英文摘要: As one of the most common reasons for slippery roads in wintertime, hoar frost can reduce surface friction and affect traffic safety. The risk of winter road hoar frost is subjected to changes in the warming climate. A better understanding of these changes could lead to improved forecasting of hoar frost risk and provide information to policymakers in making climate adaptation strategies. In this work, the decadal variation in winter road hoar frost risk between 2000 and 2016 in Sweden was examined by using in situ observations from 244 stations in the Swedish Road Weather Information System. Results show that hoar frost risks have decreased in the south of Sweden (south of 59°N), whilst increasing in central Sweden (approximately 59°–65°N). Hoar frost risk tends to increase (decrease) in regions where there is a relatively high (low) mean number of hoar frost risk days. Further analysis indicates that the strengthened winter North Atlantic Oscillation (NAO) over the last few decades, which resulted in warmer and wetter winters in Sweden, is the main cause of the changes. During strong positive NAO winters, the frequency of blocking anticyclones centred to the south-west of Sweden significantly decreased and led to more warm and moist air from south-west being transported to Sweden. The reduction in hoar frost risk in the southern part of Sweden is mainly due to an increase in road surface temperature, while the increasing hoar frost risk in central Sweden is dominated by the increase in relative humidity, which favours the occurrence of hoar frost. © 2018 Royal Meteorological Society
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116788
Appears in Collections: 气候减缓与适应
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作者单位: Department of Earth Sciences, University of Gothenburg, Gothenburg, Sweden; Department of Earth System Sciences, Tsinghua University, Beijing, China
Recommended Citation:
Hu Y.,Ou T.,Huang J.,et al. Winter hoar frost conditions on Swedish roads in a warming climate[J]. International Journal of Climatology,2018-01-01,38(12)