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DOI | 10.1029/2019JD030732 |
The Impact of a Stochastic Parameterization Scheme on Climate Sensitivity in EC-Earth | |
Strommen, K.; Watson, P. A. G.; Palmer, T. N. | |
2019-12-08 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | England |
英文摘要 | Stochastic schemes, designed to represent unresolved subgrid-scale variability, are frequently used in short and medium-range weather forecasts, where they are found to improve several aspects of the model. In recent years, the impact of stochastic physics has also been found to be beneficial for the model's long-term climate. In this paper, we demonstrate for the first time that the inclusion of a stochastic physics scheme can notably affect a model's projection of global warming, as well as its historical climatological global temperature. Specifically, we find that when including the "stochastically perturbed parametrization tendencies" (SPPT) scheme in the fully coupled climate model EC-Earth v3.1, the predicted level of global warming between 1850 and 2100 is reduced by 10% under an RCP8.5 forcing scenario. We link this reduction in climate sensitivity to a change in the cloud feedbacks with SPPT. In particular, the scheme appears to reduce the positive low cloud cover feedback and increase the negative cloud optical feedback. A key role is played by a robust, rapid increase in cloud liquid water with SPPT, which we speculate is due to the scheme's nonlinear interaction with condensation. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000501463400001 |
WOS关键词 | ARCTIC AMPLIFICATION ; PART II ; ENSEMBLE ; PHYSICS ; STATE ; STRATOCUMULUS ; ATMOSPHERE ; FEEDBACKS ; WEATHER ; SPREAD |
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/225856 |
专题 | 环境与发展全球科技态势 |
作者单位 | Univ Oxford, Dept Phys, Oxford, England |
推荐引用方式 GB/T 7714 | Strommen, K.,Watson, P. A. G.,Palmer, T. N.. The Impact of a Stochastic Parameterization Scheme on Climate Sensitivity in EC-Earth[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019. |
APA | Strommen, K.,Watson, P. A. G.,&Palmer, T. N..(2019).The Impact of a Stochastic Parameterization Scheme on Climate Sensitivity in EC-Earth.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES. |
MLA | Strommen, K.,et al."The Impact of a Stochastic Parameterization Scheme on Climate Sensitivity in EC-Earth".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES (2019). |
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