Statistical analysis of the characteristics of typhoons approaching Japan from 2006 to 2019

• Published in: Geomatics, natural hazards and risk Vol. 14; no. 1
• Main Authors: Nayak, Sridhara, Takemi, Tetsuya
• Format: Journal Article
• Language: English
• Published: Abingdon Taylor & Francis 31-12-2023; Taylor & Francis Ltd; Taylor & Francis Group
• Subjects: Analysis; climate change; environmental conditions; Hurricanes; Moisture content; Rainfall; Sea surface; Sea surface temperature; Statistical analysis; Statistical methods; Statistics; Surface temperature; Typhoon; typhoon hazard; typhoon intensity; Typhoons; Vertical wind shear; Water content; Wind shear; Winds; Japan
• ISSN: 1947-5705; 1947-5713
• DOI: 10.1080/19475705.2023.2208722

This study investigated the characteristics of 60 typhoons approaching Japan over the past 14 years (2006-2019) by conducting statistical analysis of their temporal evolution, active hours, intensity, frequency, size, duration, and translation speed. By dividing the time period into the earlier (before 2012) and the most recent (after 2013) years, the analysis indicated that the annual frequency of typhoons is higher in the most recent years than in the earlier years. The typhoons in recent years took relatively less time to reach Japan and remained active for shorter time over the land are of Japan than those in the earlier years. The intensity of the typhoons in the recent years showed stronger winds and considerably lower pressures at the landfall time than that in the earlier years. Typhoons in recent years carry more frequent and intense rainfall compared to those in the earlier years in this study. The analysis inferred that the higher sea surface temperature, weaker vertical wind shears, and a larger amount of moisture around the centers of the recent typhoons were responsible for making them stronger.