Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL091220 |
Assessment of equilibrium climate sensitivity of the Community Earth System Model version 2 through simulation of the Last Glacial Maximum | |
Jiang Zhu; Bette L. Otto‐; Bliesner; Esther C. Brady; Christopher J. Poulsen; Jessica E. Tierney; Marcus Lofverstrom; Pedro DiNezio | |
2021-01-12 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2021 |
英文摘要 | The upper end of the equilibrium climate sensitivity (ECS) has increased substantially in the latest Coupled Model Intercomparison Projects phase 6 with eight models (as of this writing) reporting an ECS > 5°C. The Community Earth System Model version 2 (CESM2) is one such high‐ECS model. Here we perform paleoclimate simulations of the Last Glacial Maximum (LGM) using CESM2 to examine whether its high ECS is realistic. We find that the simulated LGM global mean temperature decrease exceeds 11°C, greater than both the cooling estimated from proxies and simulated by an earlier model version (CESM1). The large LGM cooling in CESM2 is attributed to a strong shortwave cloud feedback in the newest atmosphere model. Our results indicate that the high ECS of CESM2 is incompatible with LGM constraints and that the projected future warming in CESM2, and models with a similarly high ECS, is thus likely too large. |
领域 | 气候变化 |
URL | 查看原文 |
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/311390 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Jiang Zhu,Bette L. Otto‐,Bliesner,et al. Assessment of equilibrium climate sensitivity of the Community Earth System Model version 2 through simulation of the Last Glacial Maximum[J]. Geophysical Research Letters,2021. |
APA | Jiang Zhu.,Bette L. Otto‐.,Bliesner.,Esther C. Brady.,Christopher J. Poulsen.,...&Pedro DiNezio.(2021).Assessment of equilibrium climate sensitivity of the Community Earth System Model version 2 through simulation of the Last Glacial Maximum.Geophysical Research Letters. |
MLA | Jiang Zhu,et al."Assessment of equilibrium climate sensitivity of the Community Earth System Model version 2 through simulation of the Last Glacial Maximum".Geophysical Research Letters (2021). |
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