Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-16-0749.1 |
An Anomalous Genesis Potential Index for MJO Modulation of Tropical Cyclones | |
Wang, Bin1,2,3; Moon, Ja-Yeon1,2 | |
2017-06-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2017 |
卷号 | 30期号:11 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Peoples R China |
英文摘要 | Modulation of tropical cyclone (TC) genesis by the Madden-Julian oscillation (MJO) has been quantitatively diagnosed by using a climatological genesis potential index (GPI). Analysis of TC genesis during November-April of 1979-2014 indicates the most effective factors controlling intraseasonal TC genesis are 850-hPa relative vorticity weighted by the Coriolis parameter f zeta(r850) and 500-hPa vertical motion omega(500). The total vertical wind shear and maximum potential intensity are unimportant, and the role of 600-hPa relative humidity is greatly represented by omega 500. The MJO modulates TC genesis primarily through changing low-level vorticity induced by its Rossby wave gyres and meridional shears of equatorial zonal winds. A new intraseasonal GPI (ISGPI) is proposed to quantify the MJO's modulation of TC genesis. The ISGPI significantly improves representation of intraseasonal variation of TC genesis in the tropics and in each subregion of the southern Indian Ocean, Australian monsoon, and South Pacific. In the hot spots of the Southern Hemisphere TC genesis zone, the probability of TC genesis can differ by a factor of 5-19 as a result of MJO modulation. The results suggest that the large-scale factors controlling TC genesis may vary with different time scales, and the climatological GPI may not be quite applicable for diagnoses of climate variability and future change of TC genesis potential. To simulate realistic impacts of theMJOon TC genesis, general circulation models must reproduce not only realistic eastward propagation but also the MJO low-level circulation structure. Application of the new ISGPI may have a large potential to improve dynamical subseasonal prediction of TC genesis. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000401007500005 |
WOS关键词 | MADDEN-JULIAN OSCILLATION ; WESTERN NORTH PACIFIC ; FREQUENCY EQUATORIAL WAVES ; GLOBAL ATMOSPHERIC MODEL ; SHEARED ZONAL FLOW ; EASTERN PACIFIC ; NONDEVELOPING DISTURBANCES ; HURRICANE ACTIVITY ; ATLANTIC ; CLIMATE |
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/20064 |
专题 | 气候变化 |
作者单位 | 1.Univ Hawaii Manoa, Dept Atmospher Sci, Int Pacific Res Ctr, Honolulu, HI 96822 USA; 2.Univ Hawaii Manoa, Atmosphere Ocean Res Ctr, Honolulu, HI 96822 USA; 3.Nanjing Univ Informat Sci & Technol, Earth Syst Modeling Ctr, Nanjing, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Bin,Moon, Ja-Yeon. An Anomalous Genesis Potential Index for MJO Modulation of Tropical Cyclones[J]. JOURNAL OF CLIMATE,2017,30(11). |
APA | Wang, Bin,&Moon, Ja-Yeon.(2017).An Anomalous Genesis Potential Index for MJO Modulation of Tropical Cyclones.JOURNAL OF CLIMATE,30(11). |
MLA | Wang, Bin,et al."An Anomalous Genesis Potential Index for MJO Modulation of Tropical Cyclones".JOURNAL OF CLIMATE 30.11(2017). |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
查看访问统计 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[Wang, Bin]的文章 |
[Moon, Ja-Yeon]的文章 |
百度学术 |
百度学术中相似的文章 |
[Wang, Bin]的文章 |
[Moon, Ja-Yeon]的文章 |
必应学术 |
必应学术中相似的文章 |
[Wang, Bin]的文章 |
[Moon, Ja-Yeon]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论