초록 열기/닫기 버튼

In this study, we analyzed the characteristics of climate variability in summer rainfall during Changma over three sub-sector regions (Middle, Southern, Jeju) in South Korea for the new climatological period of 1991-2020 using observation data from 60 ASOS stations. There was a significant interannual variability in rainfall, wet days, and rainfall intensity but the long-term trend of rainfall was not significant over the three sectors in South Korea. Comparing the new climatology (P2: 1991-2020) with the old one (P1: 1981-2010), it was found that the precipitation during Changma in new climatology (P2) was enhanced in Middle sector but reduced in Southern and Jeju sectors. In P2, wet days increased only a few stations in the Middle sector but the rainfall intensity was strengthened over the 50% stations including Middle sector, south and west coast of the Southern sector. Wet days above 25, 50, 75, 95%ile rainfall during Changma in Southern and Jeju sectors all decreased in P2. Climatological change from P1 to P2 showed a large variability not only in temporal frame but also in the spatial distribution in South Korea.