Work

Changes of upper ocean disturbance caused by tropical cyclones in the Western North Pacific main development region (1993–2021)

Year: 2025

Type: article

Abstract: During the passage of tropical cyclones (TCs) cause severe disturbances in the upper ocean, especially the TC main development region (MDR) (5°-23°N, 127°-160°E) in the Western North Pacific. The main attributes affecting the upper ocean disturbance were selected and weighted by the CRITIC weight method. An upper ocean disturbance (UOD) index with TCs intensity factors (MSW, Vh), ocean dynamic factors (SSC, RV, EPV) and ocean thermal factors (ΔSST, ΔMLD) was established. The change of UOD index in different time scales was analyzed by calculating each TC accumulation, monthly accumulation, and Interannual accumulation. The UOD index was closely related to the ENSO (El Niño-Southern Oscillation) climate anomaly, and their interannual correlation was as high as 0.83. Generally, the UOD index was higher in El Niño years and lower in La Niña years. In the past 10 years, the ocean thermal factors of UOD index have been increasing, especially in La Niña years. This is mainly due to the increasing SST, decreasing MLD and seawater salinity in recent years, which have changed upper ocean stratification. These results offer insights for the comprehensive analysis of the response and variation trend of the upper ocean to TC in the MDR of the Western North Pacific in recent years.

Source: PLoS ONE

DOI: 10.1371/journal.pone.0320143

Authors: Yujun Liu, Feiyan Chen, Zhifei Ma, Yating Shao, Junhui Yan

Institutions: Xinyang Normal University, Chinese Academy of Sciences, Institute of Geographic Sciences and Natural Resources Research, State Key Laboratory of Resources and Environmental Information System, China University of Mining and Technology - Beijing

Language: English

Topic: Tropical and Extratropical Cyclones Research

Subfield: Atmospheric Science

Field: Earth and Planetary Sciences

Domain: Physical Sciences

SDGs: Life below water, Climate action

Open Access status: gold

Estimated APC paid: $2,382