Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-18-0113.1 |
Impact of the Extended Boreal Summer Intraseasonal Oscillation on Western North Pacific Tropical Cloud Cluster Genesis Productivity | |
Zhao, Haikun1,2,3,4; Chen, Shaohua1; Klotzbach, Philip J.5; Raga, G. B.6 | |
2018-11-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2018 |
卷号 | 31期号:22页码:9175-9191 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA; Mexico |
英文摘要 | Tropical cloud clusters (TCCs) are traditionally viewed as precursors of tropical cyclone (TC) genesis. Most studies have focused on the impact of the extended boreal summer intraseasonal oscillation (ISO) on TC activity over the western North Pacific (WNP), while the modulation of the ISO on WNP TCC genesis productivity (TCCGP), that is, the ratio of TC to TCC counts, has been investigated much less frequently. This study suggests that the extended boreal summer ISO modulates WNP TCCGP, with higher (lower) TCCGP during convectively active (inactive) ISO phases. Changes in TCCGP are found to be closely associated with changes of large-scale environmental factors. During the convectively active ISO phase, significantly increased TCCGP is associated with strengthened low-level cyclonic circulation anomalies and increased midlevel relative humidity anomalies over the WNP basin. The genesis potential index (GPI) contains several large-scale environmental variables demonstrated to relate to TCs and TCCs. The GPI can adequately depict the ISO modulation of WNP TCCGP through its alterations of large-scale parameters. Low-level vorticity makes the largest contribution to the change of TCCGP with a secondary contribution from midlevel relative humidity. Interestingly, the nonlinear GPI terms make comparable contributions, which can be partly explained by the synoptic-scale wave activity associated with the ISO mode. Stronger (weaker) 3-8-day synoptic-scale wave train intensity and increased (decreased) low-level eddy kinetic energy are found to be associated with the enhanced (weakened) monsoon circulation over the WNP basin during convectively active (inactive) ISO phases. |
英文关键词 | Madden-Julian oscillation Tropical cyclones Climate variability Intraseasonal variability |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000447530600004 |
WOS关键词 | MADDEN-JULIAN OSCILLATION ; MULTIVARIATE MJO INDEX ; CYCLONE ACTIVITY ; LATE-SEASON ; PART I ; MODULATION ; VARIABILITY ; CYCLOGENESIS ; CIRCULATION ; PREDICTION |
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/20311 |
专题 | 气候变化 |
作者单位 | 1.Nanjing Univ Informat Sci & Technol, Minist Educ, Key Lab Meteorol Disaster, Nanjing, Jiangsu, Peoples R China; 2.Nanjing Univ Informat Sci & Technol, Joint Int Res Lab Climate & Environm Change, Nanjing, Jiangsu, Peoples R China; 3.Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Nanjing, Jiangsu, Peoples R China; 4.Nanjing Univ Informat Sci & Technol, Pacific Typhoon Res Ctr, Nanjing, Jiangsu, Peoples R China; 5.Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA; 6.Univ Nacl Autonoma Mexico, Ctr Ciencias Atmosfera, Mexico City, DF, Mexico |
推荐引用方式 GB/T 7714 | Zhao, Haikun,Chen, Shaohua,Klotzbach, Philip J.,et al. Impact of the Extended Boreal Summer Intraseasonal Oscillation on Western North Pacific Tropical Cloud Cluster Genesis Productivity[J]. JOURNAL OF CLIMATE,2018,31(22):9175-9191. |
APA | Zhao, Haikun,Chen, Shaohua,Klotzbach, Philip J.,&Raga, G. B..(2018).Impact of the Extended Boreal Summer Intraseasonal Oscillation on Western North Pacific Tropical Cloud Cluster Genesis Productivity.JOURNAL OF CLIMATE,31(22),9175-9191. |
MLA | Zhao, Haikun,et al."Impact of the Extended Boreal Summer Intraseasonal Oscillation on Western North Pacific Tropical Cloud Cluster Genesis Productivity".JOURNAL OF CLIMATE 31.22(2018):9175-9191. |
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