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DOI | 10.1175/JCLI-D-18-0257.1 |
The Response of the Midlatitude Jet to Regional Polar Heating in a Simple Storm-Track Model | |
Ruggieri, Paolo1; Kucharski, Fred2; Novak, Lenka3 | |
2019-05-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2019 |
卷号 | 32期号:10页码:2869-2885 |
文章类型 | Article |
语种 | 英语 |
国家 | Italy; USA |
英文摘要 | Given the recent changes in the Arctic sea ice, understanding the effects of the resultant polar warming on the global climate is of great importance. However, the interaction between the Arctic and midlatitude circulation involves a complex chain of mechanisms, which leaves state-of-the-art general circulation models unable to represent this interaction unambiguously. This study uses an idealized general circulation model to provide a process-based understanding of the sensitivity of the midlatitude circulation to the location of high-latitude warming. A simplified atmosphere is simulated with a single zonally localized midlatitude storm track, which is analogous to the storm tracks in the Northern Hemisphere. It is found that even small changes in the position of the forcing relative to that storm track can lead to very different responses in the midlatitude circulation. More specifically, it is found that heating concentrated in one region may cause a substantially stronger global response compared to when the same amount of heating is distributed across all longitudes at the same latitude. Linear interference between climatological and anomalous flow is an important component of the response, but it does not explain differences between different longitudes of the forcing. Feedbacks from atmospheric transient eddies are found to be associated with this strong response. A dependence between the climatological jet latitude and the jet response to polar surface heating is found. These results can be used to design and interpret experiments with complex state-of-the-art models targeted at Arctic-midlatitude interactions. |
英文关键词 | Atmosphere Teleconnections Climate variability Seasonal variability |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000466129500001 |
WOS关键词 | SEA-ICE VARIABILITY ; ATMOSPHERIC CIRCULATION ; TELECONNECTIONS ; BARENTS ; IMPACT |
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/183006 |
专题 | 气候变化 |
作者单位 | 1.Ctr Euromediterraneo Cambiamenti Climat, Bologna, Italy; 2.Abdus Salam Int Ctr Theoret Phys, Trieste, Italy; 3.CALTECH, Pasadena, CA 91125 USA |
推荐引用方式 GB/T 7714 | Ruggieri, Paolo,Kucharski, Fred,Novak, Lenka. The Response of the Midlatitude Jet to Regional Polar Heating in a Simple Storm-Track Model[J]. JOURNAL OF CLIMATE,2019,32(10):2869-2885. |
APA | Ruggieri, Paolo,Kucharski, Fred,&Novak, Lenka.(2019).The Response of the Midlatitude Jet to Regional Polar Heating in a Simple Storm-Track Model.JOURNAL OF CLIMATE,32(10),2869-2885. |
MLA | Ruggieri, Paolo,et al."The Response of the Midlatitude Jet to Regional Polar Heating in a Simple Storm-Track Model".JOURNAL OF CLIMATE 32.10(2019):2869-2885. |
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