globalchange  > 全球变化的国际研究计划
DOI: 10.1002/joc.5873
Scopus ID: 2-s2.0-85054542662
Title:
Effects of snow cover on urban surface energy exchange: Observations in Harbin, China during the winter season
Author: Shui T.; Liu J.; Xiao Y.; Shi L.
Source Publication: International Journal of Climatology
ISSN: 8998418
Publishing Year: 2019
Volume: 39, Issue:3
pages begin: 1230
pages end: 1242
Language: 英语
Keyword: eddy covariance ; energy balance ; snow cover ; urban climate
Scopus Keyword: Energy balance ; Heat flux ; Interfacial energy ; Latent heat ; Melting ; Eddy covariance ; Eddy covariance measurements ; Energy exchanges ; Most available energies ; Sensible heat flux ; Severe cold regions ; Snow covers ; Urban climates ; Snow
English Abstract: The surface energy balance over Harbin, one of the major cities in severe cold regions of China, is examined during the snow-covered and snow-melt periods (January 11 to April 20, 2017) using radiation and eddy covariance measurements. Comparisons of radiation and energy fluxes from fresh snow, cold snow, melting snow, and snow-free periods revealed that the presence of snow cover has a considerable impact on the radiation and energy balances. The daytime net radiation was mostly dissipated as sensible heat flux with a fraction of 43% during the fresh snow periods. During the cold snow periods, the daytime fraction of sensible heat flux decreased to 31% and most available energy was stored in the urban surfaces. During the melting snow periods, since the snowmelt process consumed a considerable portion of available energy, the daytime fraction of sensible heat flux decreased about 20% when compared to the cold snow periods, while the daytime fraction of latent heat flux increased about 50% due to the evaporation of melt water. After the snow melted, the ratio of daytime latent heat flux decreased because vegetation was not yet active during the snow-free periods and the Bowen ratio increased from 2.3 (melting snow periods) to 5.9 (snow-free periods). © 2018 Royal Meteorological Society
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被引频次[WOS]:5   [查看WOS记录]     [查看WOS中相关记录]
Document Type: 期刊论文
Identifier: http://119.78.100.158/handle/2HF3EXSE/116555
Appears in Collections:全球变化的国际研究计划

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Affiliation: College of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, China; School of Architecture, Harbin Institute of Technology, Harbin, China; Key Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology, Ministry of Industry and Information Technology, Harbin, China

Recommended Citation:
Shui T.,Liu J.,Xiao Y.,et al. Effects of snow cover on urban surface energy exchange: Observations in Harbin, China during the winter season[J]. International Journal of Climatology,2019-01-01,39(3)
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