| DOI: | 10.5194/cp-8-2061-2012
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| Scopus记录号: | 2-s2.0-84871816507
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| 论文题名: | A mechanism for dust-induced destabilization of glacial climates |
| 作者: | Farrell B.F.; Abbot D.S.
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| 刊名: | Climate of the Past
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| ISSN: | 18149324
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| 出版年: | 2012
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| 卷: | 8, 期:6 | | 起始页码: | 2061
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| 结束页码: | 2067
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| 语种: | 英语
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| Scopus关键词: | atmospheric forcing
; dust
; glacial environment
; hydrological cycle
; interstadial
; mathematical analysis
; radiation balance
; stabilization
; temporal distribution
; timescale
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| 英文摘要: | Abrupt transitions between cold/dry stadial and warm/wet interstadial states occurred during glacial periods in the absence of any known external forcing. The climate record preserved in polar glaciers, mountain glaciers, and widespread cave deposits reveals that these events were global in extent with temporal distribution implying an underlying memoryless process with millennial time scale. Here a theory is advanced implicating feedback between atmospheric dust and the hydrological cycle in producing these abrupt transitions. Calculations are performed using a radiative-convective model that includes the interaction of aerosols with radiation to reveal the mechanism of this dust/precipitation interaction feedback process and a Langevin equation is used to illustrate glacial climate destabilization by this mechanism. This theory explains the observed abrupt, bimodal, and memoryless nature of these transitions as well as their intrinsic connection with the hydrological cycle. © Author(s) 2012. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/49512
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| Appears in Collections: | 气候变化与战略
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| Recommended Citation: | |
Farrell B.F.,Abbot D.S.. A mechanism for dust-induced destabilization of glacial climates[J]. Climate of the Past,2012-01-01,8(6)
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