DOI: 10.1029/2018JD028502
Scopus记录号: 2-s2.0-85051081576
论文题名: Liquid-Vapor-Air Flow in the Frozen Soil
作者: Yu L. ; Zeng Y. ; Wen J. ; Su Z.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 14 起始页码: 7393
结束页码: 7415
语种: 英语
英文关键词: freeze-thaw process
; frozen soil
; liquid-vapor-air flow
; parameterizations
Scopus关键词: Calluna vulgaris
英文摘要: Accurate representing freeze-thaw (FT) process is of great importance in cold region hydrology and climate studies. With the STEMMUS-FT model (Simultaneous Transfer of Energy, Mass and Momentum in Unsaturated Soil), we investigated the coupled water and heat transfer in the variably saturated frozen soil and the mechanisms of water phase change along with both evaporation and FT process, at a typical meadow ecosystem on the Tibetan Plateau. The STEMMUS-FT showed its capability of depicting the simultaneous movement of soil moisture and heat flow in frozen soil. The comparison of different parameterizations of soil thermal conductivity indicated that the de Vries parameterization performed better than others in reproducing the hydrothermal dynamics of frozen soils. The analysis of water/vapor fluxes indicated that both the liquid water and vapor fluxes move upward to the freezing front and highlighted the crucial role of vapor flow during soil FT cycles as it connects the water/vapor transfer beneath the freezing front and above the evaporation front. The liquid/vapor advective fluxes make a negligible contribution to the total mass transfer. Nevertheless, the interactive effect of soil ice and air can be found on the spatial and temporal variations of advective fluxes in frozen soils. ©2018. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113512
Appears in Collections: 气候减缓与适应
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作者单位: Faculty of Geo-information and Earth Observation (ITC), University of Twente, Enschede, Netherlands; College of Atmospheric Sciences, the Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, Chengdu University of Information Technology, Chengdu, China
Recommended Citation:
Yu L.,Zeng Y.,Wen J.,et al. Liquid-Vapor-Air Flow in the Frozen Soil[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(14)