DOI: 10.1175/JCLI-D-11-00711.1
Scopus记录号: 2-s2.0-84871821911
论文题名: Surface energy balance framework for Arctic amplification of climate change
作者: Lesins G. ; Duck T.J. ; Drummond J.R.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期: 23 起始页码: 8277
结束页码: 8288
语种: 英语
Scopus关键词: Amplification factors
; Arctic
; Conductive heat flux
; Contributing factor
; Long-wave radiation
; Seasonal dependence
; Sensible and latent heat fluxes
; Skin temperatures
; Surface air temperatures
; Surface energy fluxes
; Surface temperatures
; Surface warming
; Surface-based
; Surface-based inversion
; Temperature inversion strength
; Amplification
; Atmospheric temperature
; Boundary layers
; Climate change
; Energy balance
; Heat flux
; Interfacial energy
; Surface properties
; Factor analysis
; air temperature
; climate change
; energy balance
; global warming
; latent heat flux
; radiosonde
; sensible heat flux
; surface energy
; temperature anomaly
; trend analysis
; Arctic
; Canada
英文摘要: Using 22 Canadian radiosonde stations from 1971 to 2010, the annually averaged surface air temperature trend amplification ranged from 1.4 to 5.2 relative to the global average warming of 0.17°C decade-1. The amplification factors exhibit a stronglatitudinal dependence varying from 2.6 to 5.2 as the latitude increases from 50° to 80°N. The warming trend has a strong seasonal dependence with the greatest warming taking place from September to April. The monthly variations in the warming trend are shown to be related to the surfacebased temperature inversion strength and the mean monthly surface air temperatures. The surface energy balance (SEB) equation is used to relate the response of the surface temperature to changes in the surface energy fluxes. Based on the SEB analysis, there are four contributing factors to Arctic amplification: 1) a larger change in net downward radiation at the Arctic surface compared to the global average; 2) a larger snow and soil conductive heat flux change than the global average; 3) weaker sensible and latent heat flux responses that result in a larger surface temperature response in the Arctic; and 4) a colder skin temperature compared to the global average, which forces a larger surface warming to achieve the same increase in upward longwave radiation. The observed relationships between the Canadian station warming trends and both the surface-based inversion strength and the surface air temperature are shown to be consistent with the SEB analysis. Measurements of conductive flux were not available at these stations. © 2012 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52109
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Physics and Atmospheric Science, Dalhousie University, Halifax, NS, Canada
Recommended Citation:
Lesins G.,Duck T.J.,Drummond J.R.. Surface energy balance framework for Arctic amplification of climate change[J]. Journal of Climate,2012-01-01,25(23)