Different Pacific Ocean Warming Decaying Types and Northwest Pacific Tropical Cyclone Activity

Yao, Huajian; Zhong, Zhong; Yang, Xiu‐Qun; Sun, Yifei

doi:10.1175/jcli-d-13-00097.1

Cited by 20 publications

(6 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3a). This result agrees well with the previous studies on the TC landfall activity in La Niña summers [7,26]. Corresponding to the maximum cold SSTA, the anomalous descending dry air of Walker circulation dominates the central Pacific from 140°E to 140°W (Fig.…”

Section: Methodssupporting

confidence: 93%

Features of tropical cyclone landfalls over East Asia corresponding to three types of Pacific warming decaying phase

Yao

Zhong

2014

Chin. Sci. Bull.

Self Cite

View full text Add to dashboard Cite

This study examines the tropical cyclone (TC) landfall activities over the East Asia in three types of decaying phase of warm sea surface temperature anomalies (SSTAs) over the equatorial central-eastern Pacific: eastern Pacific warming decaying to La Niña, eastern Pacific warming decaying to a neutral El Niño-Southern Oscillation phase, and a central Pacific warming decaying year. Results show that, for the type of eastern Pacific warming decaying to La Niña, more TCs make landfall over Hainan Island and Beibu Gulf, whereas fewer TCs reach eastern China coast. In particular, the number of landfalling TCs remarkably decreases in the decaying phase of eastern Pacific El Niño to a neutral year. During the decaying phase of central Pacific El Niño events, more TCs tend to make landfall over southern China, Indochina Peninsula and the Philippines. The anomalies of atmospheric circulation and environmental conditions induced by the SSTAs over the tropical Pacific in the different decaying types are responsible for the evident variation in features of TC landfall.

show abstract

Section: Methodssupporting

confidence: 93%

Features of tropical cyclone landfalls over East Asia corresponding to three types of Pacific warming decaying phase

Yao

Zhong

2014

Chin. Sci. Bull.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Plenty of works have revealed the remarkable roles of the typical SSTA modes in the TIPO on the WNP TC genesis, such as the canonical ENSO, ENSO Modoki (ENM), Indian Ocean dipole (IOD) mode and Indian Ocean basin (IOB) mode. The canonical ENSO can zonally shift the location of the WNP TC genesis (Chan, ; Chen and Tam, ; Tao et al ., ; Ha et al ., ; Li and Zhou, ; Choi et al ., ; Li et al ., ) and brings more TCs over the southeastern WNP in El Niño years than in the La Niña years, whereas the El Niño Modoki often leads to more TC genesis over the entire WNP due to the distinct atmospheric anomalies induced by the two types of ENSO (Chen and Tam, ; Wang et al, ). In the tropical Indian Ocean (TIO), the positive IOB mode (IOBM) significantly suppresses the WNP TC genesis by triggering an anomalous anticyclone over the WNP (Du et al ., ; Zhan et al ., ; ; Ha et al ., ; Yu et al ., ).…”

Section: Introductionmentioning

confidence: 99%

Impacts of the combined modes of the tropical Indo‐Pacific sea surface temperature anomalies on the tropical cyclone genesis over the western North Pacific

Liu

Huang

Chen

2018

Intl Journal of Climatology

View full text Add to dashboard Cite

This work presents two combined modes of the summer sea surface temperature anomalies (SSTAs) in the tropical Indo‐Pacific Ocean during 1979–2015 and investigates their influences on the tropical cyclone (TC) genesis frequency (TCGF) over the western North Pacific (WNP). The first mode (referred to as ENSO‐IODM) features Indian Ocean dipole (IOD) SSTAs in the tropical Indian Ocean (TIO) and El Niño‐like SSTAs in the tropical Pacific Ocean (TPO) and often appears during the ENSO phase persistence summers. It usually triggers an anomalous cyclone and more TCs over the southeastern WNP together with an anomalous anticyclone and fewer TCs over the northwestern WNP. These are primarily attributed to the effect of the El Niño‐like SSTAs over the TPO. The second mode (referred to as ENM‐IOBM) is characterized by Indian Ocean basin (IOB) positive SSTAs in the TIO and La Niña Modoki‐like (ENSO Modoki; ENM) SSTAs in the TPO and often presents during the ENSO phase transition summers. The combined effects of the IOBM and ENM SSTAs induce an anomalous anticyclone over the WNP that significantly suppresses TC genesis over the central WNP. The impacts of the two combined modes on the WNP TCGF also reveal inter‐decadal changes with significant weakening of the ENSO‐IODM and strengthening of the ENM‐IOBM around the early 1990s. These are attributed to the weakened variability of the ENSO‐IODM and intensified variability of the ENM‐IOBM around the early 1990s, and show largely association with the changes in the ENSO cycle. Most of the ENSO events prior to the early 1990s show a long decaying phase with persistence features but exhibit a short decaying phase even with phase transition after the early 1990s. This brings more ENSO‐IODM structures in the summer TIPO SSTAs before the early 1990s and more ENM‐IOBM structures during the latter period, and thereby results in such above inter‐decadal changes.

show abstract

“…The warm EIO SSTA persists from El Niño year to the subsequent summer and forces equatorial baroclinic Kelvin waves in the lower troposphere emanating towards the western Pacific to reinforce the WNP anomalous anticyclonic circulation in El Niño decaying summers (Wu et al , , ), as a discharging capacitor after the warm SSTA over the equatorial central‐eastern Pacific has dissipated. Consequently, decreased TC activity is observed over the WNP in the El Niño decaying summer due to the low‐level divergence, which suppresses convection and increases vertical shear over the WNP (Du et al , ; Zhan et al , ; Tao et al , ; Ha et al , ).…”

Section: Introductionmentioning

confidence: 99%

Contribution of East Indian Ocean SSTA to Western North Pacific tropical cyclone activity under El Niño/La Niña conditions

Yao

Zhong

Yang

et al. 2014

Intl Journal of Climatology

Self Cite

View full text Add to dashboard Cite

This study investigates, under El Niño/La Niña conditions, the effects of sea surface temperature anomaly (SSTA) in the East Indian Ocean (EIO) on tropical cyclone (TC) genesis over the western North Pacific (WNP), and a possible mechanism is proposed. It is found that the EIO SSTA exerts a secondary modulation to cyclogenesis relative to the El Niño-Southern Oscillation (ENSO), and the negative correlation between the EIO SSTA and WNP TC frequency is significantly weakened by the ENSO events. Under El Niño (La Niña) conditions, no matter what phases of EIO SSTA, TC genesis generally shows similar features with low (high) frequency in the western-central WNP (15 ∘ -25 ∘ N, 120 ∘ -150 ∘ E) and high (low) frequency in the southeastern WNP (5 ∘ -15 ∘ N, 150 ∘ -170 ∘ E). In particular, the effects of warm EIO SSTA on the WNP TC activity represent an asymmetry between El Niño and La Niña. That is, the warm EIO SSTA and El Niño share combined effects to decrease TC genesis over the western-central WNP. By contrast, under La Niña conditions, the influence of warm EIO SSTA on TC activity over the western-central WNP is partially drown out by La Niña. Meanwhile, weaker monsoon trough with intense anomaly of easterly jointly induced by the two factors suppresses TC genesis over the southeastern WNP.

show abstract

Different Pacific Ocean Warming Decaying Types and Northwest Pacific Tropical Cyclone Activity

Cited by 20 publications

References 65 publications

Features of tropical cyclone landfalls over East Asia corresponding to three types of Pacific warming decaying phase

Features of tropical cyclone landfalls over East Asia corresponding to three types of Pacific warming decaying phase

Impacts of the combined modes of the tropical Indo‐Pacific sea surface temperature anomalies on the tropical cyclone genesis over the western North Pacific

Contribution of East Indian Ocean SSTA to Western North Pacific tropical cyclone activity under El Niño/La Niña conditions

Contact Info

Product

Resources

About