CAJ | 학술논문

宣恩地处长江中上游,具有山地、水系、气候等方面的区位特殊性,利用1959～2009年的观测资料,分析宣恩平均温度、平均最高温度、平均最低温度和平均日较差的变化趋势和特点。结果表明,近51 a来宣恩平均温度（除冬季）1980年代中期前降温,后增温,冬季呈持续增温趋势。最高温度与平均温度变化趋势相似,不同的是1980年代中期以后的增温幅度要大于平均温度。不同于平均温度和最高温度,最低温度呈持续升高趋势。年平均日较差先减小后增加,冬、夏季日较差减小,而春、秋季却呈增加趋势。分析认为,小城镇的增温现象不可忽视,宣恩最低温度变化受人为影响更加显著。
선은지처장강중상유,구유산지、수계、기후등방면적구위특수성,이용1959～2009년적관측자료,분석선은평균온도、평균최고온도、평균최저온도화평균일교차적변화추세화특점。결과표명,근51 a래선은평균온도（제동계）1980년대중기전강온,후증온,동계정지속증온추세。최고온도여평균온도변화추세상사,불동적시1980년대중기이후적증온폭도요대우평균온도。불동우평균온도화최고온도,최저온도정지속승고추세。년평균일교차선감소후증가,동、하계일교차감소,이춘、추계각정증가추세。분석인위,소성진적증온현상불가홀시,선은최저온도변화수인위영향경가현저。
Xuan＇en is located in the middle and upper reaches of the Yangtze River,it has a special character with mountain,water and climate system.Based on the meteorological data during 1959-2009,the trends of average air temperature,average maximum and minimum temperature,average temperature daily range in recent 51 years in Xuan＇en were analyzed in this paper.The results show that the annual mean temperature decreased before the middle of the 1980s and then increased,and continued warming occurred in winter in recent 51 years.Though the trend of maximum temperature was similar to average temperature,but the increase of the maximum temperature after the middle of the 1980s was more significant than that of average temperature.The minimum temperature was quiet different with continuously warming trend.The variation of average temperature daily range decreased in summer and winter,increased in spring and autumn.People should pay more attention in the impacts of temperature increasing in small city,and human activity＇s influence was more evident on increase of the minimum temperature.