GSTDTAP  > 气候变化
DOI10.1002/joc.6295
Inter-decadal and inter-annual variability of meridional tropical cyclone activity during September-October in the northwestern North Pacific after 1998
Tu, Jien-Yi1; Chen, Jau-Ming2; Wu, Liang3; Chi, Chia-Zhen4
2019-10-01
发表期刊INTERNATIONAL JOURNAL OF CLIMATOLOGY
ISSN0899-8418
EISSN1097-0088
出版年2019
文章类型Article;Early Access
语种英语
国家Taiwan; Peoples R China
英文摘要

This study examines inter-decadal and inter-annual variability of meridional tropical cyclone (TC) activity during September-October (SO) in the northwestern North Pacific (NWNP) around Taiwan after 1998. From inter-decadal period 1 (1980-1997) to period 2 (1998-2017), the Pacific Decadal Oscillation (PDO) changes its phase from positive to negative, characterizing cold sea surface temperature (SST) anomalies in the tropical eastern Pacific and warm SST anomalies in the tropical western Pacific. An induced low-level convergent centre around the Maritime Continent evokes a cyclonic anomaly on its northwestern side overlying Taiwan that facilitates TC formation in the region north of 20 degrees N. These TCs later move northwards/northwestwards in association with a westwards extension of the western Pacific subtropical high, leading to inter-decadal increase of northwards TC movements in the 120 degrees-130 degrees E region. For inter-annual variability, TC passage frequency in the NWNP tends to decrease during El Nino events but to increase or decrease in La Nina-related events. In La Nina-related conditions, the low-level anomalous convergent centre situating to the west of 130 degrees E (east of 135 degrees E) tends to increase (decrease) TC passage frequency in the NWNP around Taiwan. This region is influenced by an anomalous anticyclone (cyclone) on its eastern side that induces anomalous southeasterly (northeasterly) steering flows to facilitate (hinder) TC movement from the tropical western Pacific into this region. Inter-annual and inter-decadal variability of TC passage frequency in the NWNP is highly and positively connected with TC passage frequency and TC counts affecting Taiwan. More (less) TC passage frequency in the NWNP thus tends to relate to increased (decreased) TC rainfall in Taiwan.


英文关键词climate convection dynamic processes physical phenomenon scale tools and methods
领域气候变化
收录类别SCI-E
WOS记录号WOS:000488365300001
WOS关键词LARGE-SCALE CIRCULATION ; WESTERN PACIFIC ; TYPHOON ACTIVITY ; INTERDECADAL VARIABILITY ; RAINFALL VARIABILITY ; INDIAN-OCEAN ; OSCILLATION ; LANDFALL ; IMPACTS ; JAPAN
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/187411
专题气候变化
作者单位1.Natl Changhua Univ Educ, Dept Geog, Changhua, Taiwan;
2.Natl Kaohsiung Univ Sci & Technol, Dept Maritime Informat & Technol, 482,Jhongjhou 3rd Rd, Kaohsiung 805, Taiwan;
3.Chinese Acad Sci, Inst Atmospher Phys, Ctr Monsoon Syst Res, Beijing, Peoples R China;
4.Chinese Culture Univ, Grad Inst Earth Sci, Taipei, Taiwan
推荐引用方式
GB/T 7714
Tu, Jien-Yi,Chen, Jau-Ming,Wu, Liang,et al. Inter-decadal and inter-annual variability of meridional tropical cyclone activity during September-October in the northwestern North Pacific after 1998[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2019.
APA Tu, Jien-Yi,Chen, Jau-Ming,Wu, Liang,&Chi, Chia-Zhen.(2019).Inter-decadal and inter-annual variability of meridional tropical cyclone activity during September-October in the northwestern North Pacific after 1998.INTERNATIONAL JOURNAL OF CLIMATOLOGY.
MLA Tu, Jien-Yi,et al."Inter-decadal and inter-annual variability of meridional tropical cyclone activity during September-October in the northwestern North Pacific after 1998".INTERNATIONAL JOURNAL OF CLIMATOLOGY (2019).
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