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DOI | 10.1007/s00382-019-04864-4 |
Changes of MJO propagation characteristics under global warming | |
Cui, Jingxuan1; Li, Tim1,2,3 | |
2019-11-01 | |
发表期刊 | CLIMATE DYNAMICS |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2019 |
卷号 | 53页码:5311-5327 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | The change of Madden-Julian Oscillation (MJO) propagation and periodicity characteristics under global warming is investigated using two selected CMIP5 models. It is found that the MJO period tends to be shorter, while its eastward propagation tends to be accelerated. Meanwhile the main MJO activity center shifts eastward toward the central equatorial Pacific. Two factors are possibly responsible for the increased eastward phase speed of the MJO. The first is attributed to the increase of atmospheric static stability that accelerates equatorial Kelvin wave speed. The second is attributed to the increase of zonal asymmetry of MJO-scale moist static energy (MSE) tendency, which is contributed to the combined effect of anomalous circulation and mean MSE gradient. A theoretical framework is constructed to understand the relative role of anomalous heating and mean static stability changes in determining MJO-scale circulation change. It is found that their effect is phase dependent. During the initial warming phase the circulation change is primarily controlled by the heating change, whereas during the later warming phase it is primarily controlled by the static stability change. The eastward shift of the main MJO activity center is possibly caused by the occurrence of an El Nino-like mean SST change and associated vertical overturning circulation change in the tropical Pacific. |
英文关键词 | Global warming MJO future projection MSE tendency asymmetry Eastward phase propagation |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000493469900011 |
WOS关键词 | MADDEN-JULIAN OSCILLATION ; INTRASEASONAL OSCILLATION ; DYNAMICS ; MODEL ; WAVE ; TEMPERATURE ; VARIABILITY ; EVENTS ; ROSSBY |
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/187899 |
专题 | 气候变化 |
作者单位 | 1.Nanjing Univ Informat Sci & Technol, CIC FEMD, Joint Int Res Lab Climate & Environm Change ILCEC, Key Lab Meteorol Disaster,Minist Educ KLME, Nanjing, Jiangsu, Peoples R China; 2.Univ Hawaii Manoa, Int Pacific Res Ctr, Honolulu, HI 96822 USA; 3.Univ Hawaii Manoa, Sch Ocean & Earth Sci & Technol, Dept Atmospher Sci, Honolulu, HI 96822 USA |
推荐引用方式 GB/T 7714 | Cui, Jingxuan,Li, Tim. Changes of MJO propagation characteristics under global warming[J]. CLIMATE DYNAMICS,2019,53:5311-5327. |
APA | Cui, Jingxuan,&Li, Tim.(2019).Changes of MJO propagation characteristics under global warming.CLIMATE DYNAMICS,53,5311-5327. |
MLA | Cui, Jingxuan,et al."Changes of MJO propagation characteristics under global warming".CLIMATE DYNAMICS 53(2019):5311-5327. |
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