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DOI | 10.1002/joc.5220 |
Modulation of convectively coupled equatorial Rossby wave on the western North Pacific tropical cyclones activity | |
Zhao, Haikun1,2; Wu, Liguang2 | |
2018-02-01 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY
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ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2018 |
卷号 | 38期号:2页码:932-948 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | The convectively coupled equatorial Rossby waves (ERWs) how to quantitatively modulate the western North Pacific (WNP) tropical cyclones (TCs) are investigated systematically from observations in this study. Our results show that ERWs can exert a distinct modulation on the WNP TC genesis by altering large-scale conditions and thus significantly impact on the TC tracks and basin-wide TC intensity. During the convectively active ERW phase, more TCs and larger daily genesis rate (DGR) can be observed, while fewer TCs and lower DGR are found during the convectively inactive ERW phase. Such changes are mainly attributed to changes of large-scale parameters modulated by ERWs over the WNP. Budget terms of the total anomalous observed genesis potential index (GPI) indicate that the mid-level relative humidity and low-level vorticity are the two largest contributors to ERWs-composited GPI anomalies. Similar results are further obtained by analyses of the pattern correlations between the total anomalous GPI associated with ERWs and the anomalous GPI with varying environmental factors. Moreover, more TCs with north-westward tracks and more intense TCs over the WNP can be generally found during the convectively active phases of ERWs in contrast to that during the convectively inactive phases. This study enhances our understanding of intra-seasonal variability of WNP TC activity and has a substantial implication for its sub-seasonal prediction. |
英文关键词 | convectively coupled equatorial Rossby wave tropical cyclone activity genesis potential index intra-seasonal time scale western North Pacific |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000423816900029 |
WOS关键词 | MADDEN-JULIAN OSCILLATION ; LARGE-SCALE PATTERNS ; PART II ; EASTERN PACIFIC ; GLOBAL VIEW ; CYCLOGENESIS ; INTENSITY ; MONSOON ; ENSO ; GENESIS |
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/36644 |
专题 | 气候变化 |
作者单位 | 1.Nanjing Univ Informat Sci & Technol, Joint Int Res Lab Climate & Environm Change, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Key Lab Meteorol Disaster,Minist Educ, Nanjing, Jiangsu, Peoples R China; 2.Nanjing Univ Informat Sci & Technol, Earth Syst Modelling Ctr, Pacific Typhoon Res Ctr, Nanjing, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Zhao, Haikun,Wu, Liguang. Modulation of convectively coupled equatorial Rossby wave on the western North Pacific tropical cyclones activity[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2018,38(2):932-948. |
APA | Zhao, Haikun,&Wu, Liguang.(2018).Modulation of convectively coupled equatorial Rossby wave on the western North Pacific tropical cyclones activity.INTERNATIONAL JOURNAL OF CLIMATOLOGY,38(2),932-948. |
MLA | Zhao, Haikun,et al."Modulation of convectively coupled equatorial Rossby wave on the western North Pacific tropical cyclones activity".INTERNATIONAL JOURNAL OF CLIMATOLOGY 38.2(2018):932-948. |
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