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| DOI | 10.1029/2019GL085844 |
| Diagnosing Transient Response to CO2 Forcing in Coupled Atmosphere-Ocean Model Experiments Using a Climate Model Emulator | |
| Tsutsui J. | |
| 发表日期 | 2020 |
| ISSN | 0094-8276 |
| 卷号 | 47期号:7 |
| 英文摘要 | A climate model emulator that mimics an ensemble of state-of-the-art coupled climate models has been used for probabilistic climate projections. To emulate and compare the latest and previous multimodel ensembles, this study establishes a new method to diagnose a set of parameters of effective radiative forcing, feedback, and impulse response functions by fitting a minimal emulator to time series of individual models in response to step- and ramp-shaped CO2 forcing up to a quadrupling concentration level. The diagnosed CO2 forcing is scaled down to a doubling level, leading to an unbiased estimate of equilibrium climate sensitivity. The average climate sensitivity of the latest ensemble is 18% and 13% greater than that of the previous ensemble for equilibrium and transient states. Although these increases are subject to data availability, the latter smaller rate is significant and is consistent with the relationship between feedback strength and response timescales. ©2020. The Authors. |
| 英文关键词 | Atmospheric radiation; Carbon dioxide; Impulse response; Transient analysis; Atmosphere-ocean modeling; Climate sensitivity; Concentration levels; Coupled climate model; Impulse response functions; Multi-model ensemble; Probabilistic climate projections; Radiative forcings; Climate models |
| 语种 | 英语 |
| 来源期刊 | Geophysical Research Letters
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/170492 |
| 作者单位 | Central Research Institute of Electric Power Industry, Abiko, Chiba, Japan |
| 推荐引用方式 GB/T 7714 | Tsutsui J.. Diagnosing Transient Response to CO2 Forcing in Coupled Atmosphere-Ocean Model Experiments Using a Climate Model Emulator[J],2020,47(7). |
| APA | Tsutsui J..(2020).Diagnosing Transient Response to CO2 Forcing in Coupled Atmosphere-Ocean Model Experiments Using a Climate Model Emulator.Geophysical Research Letters,47(7). |
| MLA | Tsutsui J.."Diagnosing Transient Response to CO2 Forcing in Coupled Atmosphere-Ocean Model Experiments Using a Climate Model Emulator".Geophysical Research Letters 47.7(2020). |
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