DOI: 10.1029/2012GL054306
论文题名: Isentropic constraints by midlatitude surface warming on the Arctic midtroposphere
作者: Laliberté F. ; Kushner P.J.
刊名: Geophysical Research Letters
ISSN: 0094-9326
EISSN: 1944-9057
出版年: 2013
卷: 40, 期: 3 起始页码: 606
结束页码: 611
语种: 英语
英文关键词: Arctic
; global warming
; moist thermodynamics
; moisture
; troposphere
Scopus关键词: Global warming
; Moisture
; Thermodynamics
; Troposphere
; Arctic
; Arctic warming
; High Latitudes
; Midtroposphere
; Potential temperature
; Surface warming
; Tropical atmospheres
; Tropospheric warming
; Temperature
; global warming
; latent heat flux
; moisture
; potential temperature
; thermodynamics
; troposphere
; twenty first century
; Arctic
英文摘要: In simulations of 21st century climate, it is argued that changes in midlatitude near-surface moisture and temperature could explain the autumn midtropospheric Arctic warming. The argument is based on a comparison between the Arctic midtropospheric warming and theoretical estimates in which synoptic scale transient eddies propagate near-surface warming anomalies along either dry potential temperature surfaces or equivalent (moist) potential temperature surfaces. In most models, it is observed that the Arctic midtropospheric warming can be obtained from the propagation of midlatitude near-surface warming anomalies according to a dynamic that is intermediate between the dry and moist theories. While many models follow more closely the moist theory, few follow more closely the dry theory. This finding suggests that, as for the tropical atmosphere, theories of high-latitude midtropospheric warming based on changes in poleward heat fluxes should include a moist component. Key Points High latitude tropospheric warming is homogenized along moist isentropes It can constrain the CMIP5 inter model spread in Arctic midtropospheric warming Latent heat should be included in theories of high latitude tropospheric warming ©2012. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84878184521&doi=10.1029%2f2012GL054306&partnerID=40&md5=a68c8d3504f0d2e463a3c25003935b36
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6590
Appears in Collections: 气候减缓与适应
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作者单位: Department of Physics, University of Toronto, 60 St. George St., Toronto, ON M5S 1A7, Canada
Recommended Citation:
Laliberté F.,Kushner P.J.. Isentropic constraints by midlatitude surface warming on the Arctic midtroposphere[J]. Geophysical Research Letters,2013-01-01,40(3).