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DOI	10.1007/s12665-015-4975-5
	Radiation and energy balance characteristics of asphalt pavement in permafrost regions
	Zhang, Zhongqiong; Wu, Qingbai; Xun, Xueyi
发表日期	2016
ISSN	1866-6280
EISSN	1866-6299
卷号	75 期号:3
英文摘要	Solar radiation and energy balance between the atmosphere and asphalt pavement directly affect the heat absorption of the pavement, resulting in a temperature increase and possible thawing of the permafrost beneath embankments in permafrost regions. The study area is located in the eastern side of the Qiangtang large continuous permafrost on the Qinghai-Tibet Plateau. By in situ field testing about radiation and energy transfer, the heat absorption of asphalt pavement in the experimental section of high-grade highway in the Beiluhe area was analyzed. The energy exchange between the atmosphere and asphalt pavement differs from the natural surface. Compared with natural surface, the asphalt pavement shows an increased radiation capacity of downward longwave radiation, upward longwave radiation, and downward shortwave radiation, as well as a reduced radiation capacity of upward shortwave radiation. These changes in radiation capacity substantiate the increase in the heat absorption of asphalt pavement. Overall, the net radiation amount of asphalt pavement is 6.45 % higher than that of a natural surface. Sensible heat and latent heat dominated the energy transportation. However, in contrast to that of the natural surface, the sensible heat flux of the asphalt pavement was reduced by 15.95 %, whereas the latent heat flux was reduced by 32.1 %. The increase in solar radiation energy absorption and the decrease in energy transfer caused the asphalt pavement to absorb more heat than the natural surface. This difference in energy balance was a driving force in the thermal effects of asphalt pavement. Analysis of heat sources of asphalt pavement will help to take appropriate engineering measures for the normal operation of road construction in cold regions.
英文关键词	Asphalt pavement; Radiation; Energy balance; Endothermic
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Water Resources
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS关键词	EMBANKMENT ; HIGHWAY
WOS记录号	WOS:000370241400043
来源期刊	ENVIRONMENTAL EARTH SCIENCES
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/240207
作者单位	[Zhang, Zhongqiong; Wu, Qingbai] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China; [Zhang, Zhongqiong; Wu, Qingbai] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Beiluhe Observat Stn Frozen Soil Environm & Engn, Golmud 816000, Peoples R China; [Xun, Xueyi] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Land Surface Proc & Climate Change Cold &, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Zhongqiong,Wu, Qingbai,Xun, Xueyi. Radiation and energy balance characteristics of asphalt pavement in permafrost regions[J]. 中国科学院西北生态环境资源研究院,2016,75(3).
APA	Zhang, Zhongqiong,Wu, Qingbai,&Xun, Xueyi.(2016).Radiation and energy balance characteristics of asphalt pavement in permafrost regions.ENVIRONMENTAL EARTH SCIENCES,75(3).
MLA	Zhang, Zhongqiong,et al."Radiation and energy balance characteristics of asphalt pavement in permafrost regions".ENVIRONMENTAL EARTH SCIENCES 75.3(2016).