한반도에서 상대습도의 시공간적 분포 특성 및 군집화
Spatio-Temporal Distribution Characteristics and Clustering of Relative Humidity in the Korean Peninsula
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참고문헌
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초록
This study analyzed the spatial and temporal distribution characteristics of relative humidity (RH) based on the past 110 years (1911-2020) weather station data in Korea. Results showed that both the average and the trend of RH have changed over the research period. Overall, the RH for the recent 30 years (1990.12- 2020.11) showed decreasing trends in winter and spring and increasing trends in summer and autumn. The decreasing trends in winter and spring were mainly due to a decrease in the dew point temperature (Td) and a rapid increase in temperature, respectively. On the other hand, the increasing trends in summer and autumn were mostly related to an increase in Td. Our cluster analysis using K-means clustering classified Korea into 6 clusters. The western coastal region has the highest RH and the smallest temporal variation, with an increasing trend, whereas large cities and the eastern coastal region have the lowest RH and a large temporal variation with a decreasing trend. We also observed that each cluster has its own seasonal variations such as the magnitude of seasonal variation and the time when the minimum RH occurs.
Abstract
This study analyzed the spatial and temporal distribution characteristics of relative humidity (RH) based on the past 110 years (1911-2020) weather station data in Korea. Results showed that both the average and the trend of RH have changed over the research period. Overall, the RH for the recent 30 years (1990.12- 2020.11) showed decreasing trends in winter and spring and increasing trends in summer and autumn. The decreasing trends in winter and spring were mainly due to a decrease in the dew point temperature (Td) and a rapid increase in temperature, respectively. On the other hand, the increasing trends in summer and autumn were mostly related to an increase in Td. Our cluster analysis using K-means clustering classified Korea into 6 clusters. The western coastal region has the highest RH and the smallest temporal variation, with an increasing trend, whereas large cities and the eastern coastal region have the lowest RH and a large temporal variation with a decreasing trend. We also observed that each cluster has its own seasonal variations such as the magnitude of seasonal variation and the time when the minimum RH occurs.
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