신평년(1991~2020년)에 기반한 우리나라 최근 기후특성과변화에 관한 연구
The Recent Climatic Characteristic and Change in the Republic of Korea based on the New Normals (1991~2020)
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Based on the new climate normals (1991~2020), annual mean, maximum and minimumtemperature is 12.5oC, 18.2oC, and 7.7oC, respectively while annual precipitation is1,331.7 mm, the annual mean wind speed is 2.0 m s1, and the relative humidity is 67.8% in theRepublic of Korea. Compared to 1981~2010 normal, annual mean temperature increased by0.2oC, maximum and minimum temperatures increased by 0.3oC, while the amount of precipitation(0.7%) and relative humidity (1.1%) decreased. There was no distinct change in annualmean wind speed. The spatial range of the annual mean temperature in the new normals is largefrom 7.1 to 16.9oC. Annual precipitation showed a high regional variability, ranging from 787.3to 2,030.0 mm. The annual mean relative humidity decreased at most weather stations due to therise in temperature, and the annual mean wind speed did not show any distinct differencebetween the new and old normals. With the addition of a warmer decade (2011~2020), temperaturesall increased consistently and in particular, the increase in the maximum temperature,which had not significantly changed in previous decades, was evident. The increasing trend ofannual and summer precipitation by the 2010s has disappeared in the new normals. Amongextreme climate indices, MxT30 (Daily maximum temperature 33oC days), MnT25 (Dailyminimum temperature 25oC days), and PH30 (1 hour maximum precipitation 30 mm days)increased while MnT-10 (Daily minimum temperature < 10oC days) and W13.9 (Daily maximumwind speed 13.9 m/s days) decreased at a statistically significant level. It is thought thata detailed study on the different trends of climate elements and extreme climate indices byregion should be conducted in the future.
Abstract
Based on the new climate normals (1991~2020), annual mean, maximum and minimumtemperature is 12.5oC, 18.2oC, and 7.7oC, respectively while annual precipitation is1,331.7 mm, the annual mean wind speed is 2.0 m s1, and the relative humidity is 67.8% in theRepublic of Korea. Compared to 1981~2010 normal, annual mean temperature increased by0.2oC, maximum and minimum temperatures increased by 0.3oC, while the amount of precipitation(0.7%) and relative humidity (1.1%) decreased. There was no distinct change in annualmean wind speed. The spatial range of the annual mean temperature in the new normals is largefrom 7.1 to 16.9oC. Annual precipitation showed a high regional variability, ranging from 787.3to 2,030.0 mm. The annual mean relative humidity decreased at most weather stations due to therise in temperature, and the annual mean wind speed did not show any distinct differencebetween the new and old normals. With the addition of a warmer decade (2011~2020), temperaturesall increased consistently and in particular, the increase in the maximum temperature,which had not significantly changed in previous decades, was evident. The increasing trend ofannual and summer precipitation by the 2010s has disappeared in the new normals. Amongextreme climate indices, MxT30 (Daily maximum temperature 33oC days), MnT25 (Dailyminimum temperature 25oC days), and PH30 (1 hour maximum precipitation 30 mm days)increased while MnT-10 (Daily minimum temperature < 10oC days) and W13.9 (Daily maximumwind speed 13.9 m/s days) decreased at a statistically significant level. It is thought thata detailed study on the different trends of climate elements and extreme climate indices byregion should be conducted in the future.
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