| Summary: | 碩士 === 國立嘉義大學 === 史地學系研究所(Graduate Institute of History and Geog === 98 === This study is aimed to investigate the climate characteristics and climate change of the northern Taiwan through the 24 solar terms. The date mode of each solar term in 1901-2007 is used to define the beginning of each solar term period, so each solar term period ends right before the beginning of the next one. Analyzed temperature, rainfall and relative humidity data of eight meteorological stations include Taichung, Taipei in 1901-2007, and Hualien, Tanshui, Hsinchu, Ilan, Chutzehu, Pengchiayu in 1951-2007. The climatological data is obtained in 1971-2000. The major findings are as follows.
The climatic data of the average, maximum and minimum temperature show a consistent maximum at the “minor heat” period, and a consistent minimum at the “major cold” period. Except the maximum temperature, the average and minimum temperature have an increasing trend. For the climatology of the diurnal temperature range (DTR), its maximum generally occurs at the solar terms of the typhoon season, and the minimum diverges. Except Chutzehu and Pengchiayu stations, other stations show a decreasing trend of DTR. For the climatology of the average rainfall, its maximum occurs at the solar terms of the meiyu and typhoon seasons; the minimum at the “light snow”, “major cold” and “minor heat” periods. For the climatology of the average rainfall hour, its maximum occurs at the “grain full”, “rainfall”, and “start of winter” periods; the minimum at the “minor heat” period. The long-term trend of the average rainfall and rainfall hour shows no significant difference. For the climatology of the relative humidity, its maximum occurs at the “grain full” and “insects awaken” periods; the minimum at the “light snow” and “minor heat” periods; long-term tend is decreasing in most solar terms.
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