DOI: 10.1002/2017MS001155
Scopus记录号: 2-s2.0-85041330944
论文题名: A Mathematical Model of Melt Lake Development on an Ice Shelf
作者: Buzzard S ; C ; , Feltham D ; L ; , Flocco D
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2018
卷: 10, 期: 2 起始页码: 262
结束页码: 283
语种: 英语
英文关键词: Climate models
; Heat transfer
; Lakes
; Mathematical models
; Models
; Sea level
; Solvents
; Uncertainty analysis
; Dynamic-thermodynamic model
; Ice shelves
; Lake formation
; Ocean circulation
; Surface melting
; Surface meltwater
; Uncertain parameters
; Weather stations
; Ice
英文摘要: The accumulation of surface meltwater on ice shelves can lead to the formation of melt lakes. Melt lakes have been implicated in ice shelf collapse; Antarctica's Larsen B Ice Shelf was observed to have a large amount of surface melt lakes present preceding its collapse in 2002. Such collapse can affect ocean circulation and temperature, cause habitat loss and contribute to sea level rise through the acceleration of tributary glaciers. We present a mathematical model of a surface melt lake on an idealized ice shelf. The model incorporates a calculation of the ice shelf surface energy balance, heat transfer through the firn, the production and percolation of meltwater into the firn, the formation of ice lenses, and the development and refreezing of surface melt lakes. The model is applied to the Larsen C Ice Shelf, where melt lakes have been observed. This region has warmed several times the global average over the last century and the Larsen C firn layer could become saturated with meltwater by the end of the century. When forced with weather station data, our model produces surface melting, meltwater accumulation, and melt lake development consistent with observations. We examine the sensitivity of lake formation to uncertain parameters and provide evidence of the importance of processes such as lateral meltwater transport. We conclude that melt lakes impact surface melt and firn density and warrant inclusion in dynamic-thermodynamic models of ice shelf evolution within climate models, of which our model could form the basis for the thermodynamic component. © 2018. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75660
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: Centre for Polar Observation and Modelling, Department of Meteorology, University of Reading, Reading, United Kingdom
Recommended Citation:
Buzzard S,C,, Feltham D,et al. A Mathematical Model of Melt Lake Development on an Ice Shelf[J]. Journal of Advances in Modeling Earth Systems,2018-01-01,10(2)