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| DOI | 10.1175/JCLI-D-19-0682.1 |
| Climate sensitivity and the direct effect of carbon dioxide in a limited-area cloud-resolving model | |
| Romps D.M. | |
| 发表日期 | 2020 |
| ISSN | 0894-8755 |
| 起始页码 | 3413 |
| 结束页码 | 3429 |
| 卷号 | 33期号:9 |
| 英文摘要 | Even in a small domain, it can be prohibitively expensive to run cloud-resolving greenhouse gas warming experiments due to the long equilibration time. Here, a technique is introduced that reduces the computational cost of these experiments by an order of magnitude: instead of fixing the carbon dioxide concentration and equilibrating the sea surface temperature (SST), this technique fixes the SST and equilibrates the carbon dioxide concentration. Using this approach in a cloud-resolving model of radiative-convective equilibrium (RCE), the equilibrated SST is obtained as a continuous function of carbon dioxide concentrations spanning 1 ppmv to nearly 10 000 ppmv, revealing a dramatic increase in equilibriumclimate sensitivity (ECS) at higher temperatures. This increase in ECS is due to both an increase in forcing and a decrease in the feedback parameter. In addition, the technique is used to obtain the direct effects of carbon dioxide (i.e., the rapid adjustments) over a wide range of SSTs. Overall, the direct effect of carbon dioxide offsets a quarter of the increase in precipitation from warming, reduces the shallow cloud fraction by a small amount, and has no impact on convective available potential energy (CAPE). © 2020 American Meteorological Society. |
| 英文关键词 | Climate models; Greenhouse gases; Oceanography; Potential energy; Precipitation (meteorology); Surface waters; Carbon dioxide concentrations; Climate sensitivity; Cloud resolving model; Computational costs; Continuous functions; Convective available potential energies; Radiative-convective equilibrium; Sea surface temperature (SST); Carbon dioxide; atmospheric chemistry; carbon dioxide; climate modeling; concentration (composition); convective system; greenhouse gas; potential energy; sea surface temperature |
| 语种 | 英语 |
| 来源期刊 | Journal of Climate
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/171508 |
| 作者单位 | Department of Earth and Planetary Science, University of California, Berkeley, United States; Climate and Ecosystem Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, United States |
| 推荐引用方式 GB/T 7714 | Romps D.M.. Climate sensitivity and the direct effect of carbon dioxide in a limited-area cloud-resolving model[J],2020,33(9). |
| APA | Romps D.M..(2020).Climate sensitivity and the direct effect of carbon dioxide in a limited-area cloud-resolving model.Journal of Climate,33(9). |
| MLA | Romps D.M.."Climate sensitivity and the direct effect of carbon dioxide in a limited-area cloud-resolving model".Journal of Climate 33.9(2020). |
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