DOI: 10.1002/joc.5873
Scopus记录号: 2-s2.0-85054542662
论文题名: Effects of snow cover on urban surface energy exchange: Observations in Harbin, China during the winter season
作者: Shui T. ; Liu J. ; Xiao Y. ; Shi L.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2019
卷: 39, 期: 3 起始页码: 1230
结束页码: 1242
语种: 英语
英文关键词: eddy covariance
; energy balance
; snow cover
; urban climate
Scopus关键词: 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
英文摘要: 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 Citation statistics:
资源类型: 期刊论文
标识符: 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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作者单位: 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)