DOI: 10.1002/2013JD020524
论文题名: Hysteresis of glaciations in the Permo-Carboniferous
作者: Zhuang K. ; North G.R. ; Giardino J.R.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2014
卷: 119, 期: 5 起始页码: 2147
结束页码: 2155
语种: 英语
英文关键词: energy balance model
; hysteresis of glaciations
; Permo-Carboniferous
Scopus关键词: Carbon dioxide
; Computer simulation
; Energy balance
; Hysteresis
; Conceptual model
; Energy balance models
; Glacial maxima
; Orbital element
; Permo-Carboniferous
; Pre-industrial
; Pre-industrial levels
; Seasonal cycle
; Glacial geology
; carbon dioxide
; Carboniferous
; climate forcing
; conceptual framework
; deglaciation
; energy balance
; glaciation
; Gondwana
; hysteresis
; ice cover
; numerical model
; paleoclimate
; Permian
; seasonal variation
英文摘要: The hysteresis of glaciations in the Permo-Carboniferous is simulated in an iterative energy balance model with 84 scenarios of varied orbital elements, CO2 levels, and glacial modes. Gondwana attains its glacial maximum when CO2 is roughly the same or slightly higher than the preindustrial level. Once glaciated it maintains a large ice covered area under higher CO2 levels up to 4 to 6 times of the preindustrial value followed by an abrupt disappearance of ice beyond this threshold. The solutions arrived at by iteration indicate the existence of parameter thresholds of glaciations and deglaciations which lead to the alternating extremes of glacial coverage. Dominated by the large seasonal cycle over land, the concentrated geography of the Permo-Carboniferous is more sensitive to the CO 2 -forced climate than sparsely distributed land. Our conceptual modeling agrees well with the recent geological evidence of intercalations of three glaciations and two lacunae of deglaciations in this geologic time. © 2014. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63060
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Department of Earth Sciences, Dickinson College, Carlisle, PA, United States; Department of Atmospheric Sciences, Texas AandM University, College Station, TX, United States; Department of Geology and Geophysics, Texas AandM University, College Station, TX, United States
Recommended Citation:
Zhuang K.,North G.R.,Giardino J.R.. Hysteresis of glaciations in the Permo-Carboniferous[J]. Journal of Geophysical Research Atmospheres,2014-01-01,119(5)