Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018JD029262 |
Evaluating Climate Sensitivity to CO2 Across Earth's History | |
Wolf, E. T.1,2; Haqq-Misra, J.2,3; Toon, O. B.1 | |
2018-11-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2018 |
卷号 | 123期号:21页码:11861-11874 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | CO2-driven changes to climate have occurred during many epochs of Earth's history when the solar insolation, atmospheric CO2 concentration, and surface temperature of the planet were all significantly different than today. Each of these aspects affects the implied radiative forcings, climate feedbacks, and resultant changes in global mean surface temperature. Here we use a three-dimensional climate system model to study the effects of increasing CO2 on Earth's climate, across many orders of magnitude of variation, and under solar inputs relevant for paleo, present, and future Earth scenarios. We find that the change in global mean surface temperature from doubling CO2 (i.e., the equilibrium climate sensitivity) may vary between 2.6 and 21.6 K over the course of Earth's history. In agreement with previous studies, we find that the adjusted radiative forcing from doubling CO2 increases at high concentrations up to about 1.5 bars partial pressure, generally resulting in larger changes in the surface temperature. We also find that the cloud albedo feedback causes an abrupt transition in climate for warming atmospheres that depends both on the mean surface temperature and the total solar insolation. Climate sensitivity to atmospheric CO2 has probably varied considerably across Earth's history. Plain Language Summary It is evident that climate sensitivity to changing CO2 varies if the amount of solar energy received by Earth is different, if the starting CO2 amount is different, or if the mean temperature of the planet is significantly different. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000452001400005 |
WOS关键词 | CARBON-DIOXIDE CONCENTRATIONS ; EQUABLE CLIMATE ; GREENHOUSE ; RUNAWAY ; OXYGEN ; EVOLUTION ; FUTURE ; MODEL ; CONSEQUENCES ; ATMOSPHERE |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/32209 |
专题 | 气候变化 |
作者单位 | 1.Univ Colorado, Lab Atmospher & Space Phys, Dept Atmospher & Ocean Sci, Boulder, CO 80309 USA; 2.NASA, Astrobiol Inst Virtual Planetary Lab, Seattle, WA 98195 USA; 3.Blue Marble Space Inst Sci, Seattle, WA USA |
推荐引用方式 GB/T 7714 | Wolf, E. T.,Haqq-Misra, J.,Toon, O. B.. Evaluating Climate Sensitivity to CO2 Across Earth's History[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(21):11861-11874. |
APA | Wolf, E. T.,Haqq-Misra, J.,&Toon, O. B..(2018).Evaluating Climate Sensitivity to CO2 Across Earth's History.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(21),11861-11874. |
MLA | Wolf, E. T.,et al."Evaluating Climate Sensitivity to CO2 Across Earth's History".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.21(2018):11861-11874. |
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