최근 우리나라 겨울철 기온의 계절 내 특성 변화
Recent Change in the Intraseasonal Characteristics of Winter Temperature over South Korea
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초록
In this study, we analyzed the intraseasonal variability and change of winter temperature overSouth Korea using long-term observations. The lowest temperature in the wintertime, using daily mean,maximum, and minimum temperature data occurred on January 7th in the period of 2003~2012, whileon January 22~25th in the past 30 years(1973~1982, 1983~1992, 1993~2002). Representative sevenstations in South Korea also showed consistent result. The strengthening of Siberian High and weakeningof Aleutian Low in recent 10 years are found to be closely related with the recent intraseasonal temperaturechange over South Korea. The baroclinic structure of upper-level low and lower-level high system nearKorean peninsula provided good condition for vertical cold-air advection, which resulted in minimumtemperature on late January in 1973~1982 and early January in 2003~2012 with strengthened low-levelnortherly flow.
Abstract
In this study, we analyzed the intraseasonal variability and change of winter temperature overSouth Korea using long-term observations. The lowest temperature in the wintertime, using daily mean,maximum, and minimum temperature data occurred on January 7th in the period of 2003~2012, whileon January 22~25th in the past 30 years(1973~1982, 1983~1992, 1993~2002). Representative sevenstations in South Korea also showed consistent result. The strengthening of Siberian High and weakeningof Aleutian Low in recent 10 years are found to be closely related with the recent intraseasonal temperaturechange over South Korea. The baroclinic structure of upper-level low and lower-level high system nearKorean peninsula provided good condition for vertical cold-air advection, which resulted in minimumtemperature on late January in 1973~1982 and early January in 2003~2012 with strengthened low-levelnortherly flow.
참고문헌 (27)
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