Autumn Typhoon Affecting the Korean Peninsula - Past and Present Characteristics

This study investigated the characteristics and frequency of autumn typhoons affecting the Korean Peninsula during Period I (1954 similar to 2003), Period II (2002 similar to 2010), and Period III (2011 similar to 2019). As a result of analysis of all typhoons since 1954, the frequency of typhoons during June similar to August has decreased more recently than in the past. In contrast, the number of autumn typhoons in September and October was almost 20% of the total number of typhoons during Period I, but increased by 31.6% during both Periods II and III. According to an analysis of the distribution of the maximum 3-Second gust, the area of strong gust over 33 m/s, which was concentrated in parts of the North Korea, the Korea Strait, and Japan, during Period II, was expanded to the entire Korean Peninsula during Period III. Also we can find the strength and intensity of the typhoon increased compared to the past from analysis of the characteristics of 3-Second gust in the Autumn typhoon.