Regional analysis of tropical cyclones landfalling in East Asia over the last 40 years: Changes in the activity of strong and weak tropical cyclones
Abstract
Landfalling Tropical Cyclone (TC) makes considerable life and property damage. Therefore, we should pay attention to changes in landfall TC activities continuously. This study provides comprehensively analysis of TCs that affects major countries in the East Asia.
In this study, changes in Tropical Cyclones (TCs) activity generated in the western North Pacific over the past 40 years (2021-1982) were analyzed by dividing them into landfall areas. The regional classification of the landfall TC is as follows: (1) VP if the landfall location is Vietnam or the Philippines, (2) CH for TCs that made landfall in China, and (3) TCs that made landfall in Korea and Japan It's KJ. Finally, (4) East Asia landfalling all TCs were named EA. In addition, based on the Lifetime Maximum Intensity (LMI) of TC, more than 64 knot was defined as an Intense TC(ITC), and the following was defined as a Weak TC(WTC). As a result, EA, VP, CH, and KJ all showed no long-term trend in landfall frequency and ratio. LMI and landfall intensity also did not represent a significant trend, but this was because the increase in ITC intensity and the decrease in WTC intensity were offset. This increasing ITC intensity and the decreasing WTC intensity trend appeared in every area(EA, VP, CH, and KJ) and was particularly significant in EA that combined all sub-regions.- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2022
- Bibcode:
- 2022AGUFM.A22G1769R