DOI: 10.1175/JCLI-D-14-00374.1
Scopus记录号: 2-s2.0-84942877192
论文题名: The effect of atmospheric forcing resolution on delivery of ocean heat to the antarctic floating ice shelves
作者: Dinniman M.S. ; Klinck J.M. ; Bai L.-S. ; Bromwich D.H. ; Hines K.M. ; Holland D.M.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期: 15 起始页码: 6067
结束页码: 6085
语种: 英语
Scopus关键词: Atmospheric temperature
; Atmospheric thermodynamics
; Heat transfer
; Oceanography
; Sea ice
; Upper atmosphere
; Weather forecasting
; Wind
; Antarctica
; Atmosphere-ocean interactions
; Continental shelf/slope
; Ice shelves
; Ocean model
; Southern ocean
; Ice
; air-sea interaction
; atmosphere-ocean system
; atmospheric forcing
; basal ice
; continental shelf
; floating ice
; ice shelf
; Antarctica
英文摘要: Oceanic melting at the base of the floating Antarctic ice shelves is now thought to be a more significant cause of mass loss for the Antarctic ice sheet than iceberg calving. In this study, a 10-km horizontal-resolution circum-Antarctic ocean-sea ice-ice shelf model [based on the Regional Ocean Modeling System (ROMS)] is used to study the delivery of ocean heat to the base of the ice shelves. The atmospheric forcing comes from the ERA-Interim reanalysis (~80-km resolution) and from simulations using the polar-optimized Weather Research and Forecasting Model (30-km resolution), where the upper atmosphere was relaxed to the ERA-Interim reanalysis. The modeled total basal ice shelf melt is low compared to observational estimates but increases by 14% with the higher-resolution winds and just 3% with both the higher-resolution winds and atmospheric surface temperatures. The higher-resolution winds lead to more heat being delivered to the ice shelf cavities from the adjacent ocean and an increase in the efficiency of heat transfer between the water and the ice. The higher-resolution winds also lead to changes in the heat delivered from the open ocean to the continental shelves as well as changes in the heat lost to the atmosphere over the shelves, and the sign of these changes varies regionally. Addition of the higher-resolution temperatures to the winds results in lowering, primarily during summer, the wind-driven increase in heat advected into the ice shelf cavities due to colder summer air temperatures near the coast. © 2015 American Meteorological Society. 资助项目: NSF, National Science Foundation
; NSF, National Science Foundation
; NSF, National Science Foundation
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50581
Appears in Collections: 气候变化事实与影响
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作者单位: Center for Coastal Physical Oceanography, Old Dominion University, Norfolk, VA, United States; Polar Meteorology Group, Byrd Polar Research and Climate Center, The Ohio State University, Columbus, OH, United States; Courant Institute of Mathematical Sciences, New York University, New York, NY, United States
Recommended Citation:
Dinniman M.S.,Klinck J.M.,Bai L.-S.,et al. The effect of atmospheric forcing resolution on delivery of ocean heat to the antarctic floating ice shelves[J]. Journal of Climate,2015-01-01,28(15)