Distinct Influences of the Pacific Meridional Mode and ENSO on Tropical Cyclone Intensity Change Rate over the eastern North Pacific

DC Field Value Language
dc.contributor.author Kim, Sung Hun -
dc.contributor.author Chu, Pao-shin -
dc.contributor.author Choi, Yu Mi -
dc.contributor.author Kang, Hyoun Woo -
dc.contributor.author Kang, Sok Kuh -
dc.date.accessioned 2022-09-26T01:54:53Z -
dc.date.available 2022-09-26T01:54:53Z -
dc.date.created 2022-08-22 -
dc.date.issued 2022-08-18 -
dc.identifier.uri https://sciwatch.kiost.ac.kr/handle/2020.kiost/43194 -
dc.description.abstract In this study, the effects of ENSO and Pacific meridional mode (PMM) on eastern North Pacific (ENP) tropical cyclone (TC) intensity change, rapid intensification (RI) and rapid weakening (RW) rates are investigated. Based on the distribution of the mean 24-hour TC intensity change rate and the TC track density, we divided ENP into the main intensification region (MIR) and main weakening region (MWR) and examined the influence of climate factors on these two regions. The ENSO is closely related to the ocean temperature of the MIR and the vertical wind shear of the MWR. PMM is highly associated with the ocean temperature and the low-level relative humidity in the MWR. Changes in the environmental parameters of the two regions by two climate modes are significantly related to TC intensity change rate. In the positive (negative) phase of ENSO, there was an increase (decrease) in TC intensity change rate in the MIR and a decrease (increase) in the MWR, respectively. In the positive phase (negative phase) of the PMM, an increase (decrease) in TC intensity change rate is observed in the MWR, but there is no significant change by PMM in the MIR. Most RI events in the ENP occur in MIR, whereas RW occurs mostly in the MWR (except landfall). Therefore, ENSO is closely correlated with the TC intensity change rate of MIR, which showed a high positive correlation with RI rate. Conversely, the PMM associated with the TC intensity change rate in the MWR showed a negative correlation with the RW rate. It is expected that the regional tendency of TC intensity change rate and RI, RW rate according to the phase of each climate mode can be used as important information in the ENP’s TC intensity prediction. -
dc.description.uri 2 -
dc.language Korean -
dc.publisher 한국지구과학연합회 -
dc.relation.isPartOf 제3회 KGU 연례학술대회 자료집 -
dc.title Distinct Influences of the Pacific Meridional Mode and ENSO on Tropical Cyclone Intensity Change Rate over the eastern North Pacific -
dc.type Conference -
dc.citation.conferenceDate 2022-08-16 -
dc.citation.conferencePlace KO -
dc.citation.conferencePlace 평창 알펜시아 리조트 -
dc.citation.title 제3회 KGU 연례학술대회 -
dc.contributor.alternativeName 김성훈 -
dc.contributor.alternativeName 최유미 -
dc.contributor.alternativeName 강현우 -
dc.contributor.alternativeName 강석구 -
dc.identifier.bibliographicCitation 제3회 KGU 연례학술대회 -
dc.description.journalClass 2 -
Appears in Collections:
Marine Environmental & Climate Research Division > Ocean Circulation Research Center > 2. Conference Papers
Marine Environmental & Climate Research Division > Ocean Climate Prediction Center > 2. Conference Papers
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