【摘要】 根据昆明１９２１～１９９３年的年、夏季（６～８月）、冬季（１２～２月）平均气温资料，分析研究了昆明的气温变化趋势、冷暖阶段、气温异常发生频率及气温突变点。结果表明：从本世纪２０年代开始，昆明气温呈上升趋势，至４０年代前后达最高，此后下降，７０年代降至最低，８０年代开始略有回升。１９２１～１９５４年为偏暖阶段，１９５５～１９９３年为偏冷阶段。昆明高温异常主要出现在１９５０年以前，低温异常大多出现在１９６０年以后，且气温异常发生频率低。年平均气温突变点出现在１９５７年，冬季平均气温突变点出现在１９５５年，夏季平均气温未达到突变的标准更多还原

【Abstract】 The air temperature changing tendency,cold and warm ranges,frequency of air temperature and air temperature catastrophe are analysed based on the mean air temperature data for annual,summer(6～8) and winter(12～2) from 1921 to 1993 in Kunming city. The results show that air temperature rose from 1920′,air temperature reached the maximum about 1940′, then,air temperature fall down,it reached the minimum in 1970′ and it rose slightly from 1980′ in Kunming city. The warm range is from 1921 to 1954 and cold range,from 1955 to 1993. The high temperature anomaly appeared before 1950,low temperature anomaly,after 1960 and the frequency of air temperature anomaly is low. Air temperature catastrophe appeared in 1957 for annual mean,in 1955 for winter mean and no catastrophe for summer mean.更多还原