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

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

SUBMITTER: Liu Y 

PROVIDER: S-EPMC12021217 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature