| DOI: | 10.5194/cp-8-701-2012
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| Scopus记录号: | 2-s2.0-84859367616
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| 论文题名: | Comment on "clouds and the Faint Young Sun Paradox" by Goldblatt and Zahnle (2011) |
| 作者: | Rondanelli R.; Lindzen R.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:2 | | 起始页码: | 701
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| 结束页码: | 703
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| 语种: | 英语
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| Scopus关键词: | carbon dioxide
; cirrus
; climate feedback
; cloud radiative forcing
; convection
; greenhouse gas
; parameterization
; surface temperature
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| 英文摘要: | Goldblatt and Zahnle (2011) raise a number of issues related to the possibility that cirrus clouds can provide a solution to the faint young sun paradox. Here, we argue that: (1) climates having a lower than present mean surface temperature cannot be discarded as solutions to the faint young sun paradox, (2) the detrainment from deep convective clouds in the tropics is a well-established physical mechanism for the formation of high clouds that have a positive radiative forcing (even if the possible role of these clouds as a negative climate feedback remains controversial) and (3) even if some cloud properties are not mutually consistent with observations in radiative transfer parameterizations, the most relevant consistency (for the purpose of hypothesis testing) is with observations of the cloud radiative forcing. Therefore, we maintain that cirrus clouds, as observed in the current climate and covering a large region of the tropics, can provide a solution to the faint young sun paradox, or at least ease the amount of CO 2 or other greenhouse substances needed to provide temperatures above freezing during the Archean. © 2012 Author(s). |
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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/49594
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| Appears in Collections: | 气候变化与战略
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| Recommended Citation: | |
Rondanelli R.,Lindzen R.S.. Comment on "clouds and the Faint Young Sun Paradox" by Goldblatt and Zahnle (2011)[J]. Climate of the Past,2012-01-01,8(2)
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