DOI: 10.5194/tc-11-3011-2017
Scopus记录号: 2-s2.0-85039064883
论文题名: The significance of vertical moisture diffusion on drifting snow sublimation near snow surface
作者: Huang N ; , Shi G
刊名: Cryosphere
ISSN: 19940416
出版年: 2017
卷: 11, 期: 6 起始页码: 3011
结束页码: 3021
语种: 英语
英文关键词: blowing snow
; heat balance
; ice drift
; ice sheet
; moisture
; relative humidity
; snow
; sublimation
; wind velocity
英文摘要: Sublimation of blowing snow is an important parameter not only for the study of polar ice sheets and glaciers, but also for maintaining the ecology of arid and semi-arid lands. However, sublimation of near-surface blowing snow has often been ignored in previous studies. To study sublimation of near-surface blowing snow, we established a sublimation of blowing snow model containing both a vertical moisture diffusion equation and a heat balance equation. The results showed that although sublimation of near-surface blowing snow was strongly reduced by a negative feedback effect, due to vertical moisture diffusion, the relative humidity near the surface does not reach 100 %. Therefore, the sublimation of near-surface blowing snow does not stop. In addition, the sublimation rate near the surface is 3-4 orders of magnitude higher than that at 10 m above the surface and the mass of snow sublimation near the surface accounts for more than half of the total snow sublimation when the friction wind velocity is less than about 0.55ms-1. Therefore, the sublimation of near-surface blowing snow should not be neglected. © 2017 Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75454
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
There are no files associated with this item.
作者单位: Key Laboratory of Mechanics On Disaster and Environment in Western China, Lanzhou University, Lanzhou, China; School of Mechanical Engineering, Lanzhou Jiaotong University, Lanzhou, China
Recommended Citation:
Huang N,, Shi G. The significance of vertical moisture diffusion on drifting snow sublimation near snow surface[J]. Cryosphere,2017-01-01,11(6)