摘要
基于合肥市1961~2010年逐日最高气温与最低气温的观测数据,采用线性倾向估计等方法,对合肥市近50年的四季平均最高气温变化与最低气温变化、各季节气温日较差变化等进行了分析。结果表明：合肥市春、夏、秋、冬四季平均最低气温的倾向率分别为：0.301℃/10 a、0.167℃/10 a、0.269℃/10 a、0.425℃/10 a,冬季上升幅度最大,春季次之,夏季最小。即50年来合肥市四季平均最低气温均处于上升状态,分别上升了1.505℃、0.835℃、1.345℃、2.125℃。四季平均最高气温的倾向率分别为：0.4℃/10 a、-0.042℃/10 a、0.256℃/10 a、0.204℃/10 a,即50年来合肥市除夏季平均最高气温下降0.21℃外,其他三季平均最高气温分别上升了2℃、1.28℃、1.02℃。
Basing on the observed data of daily maximum and minimum temperature of Hefei City in 1961~2010 years,average maximum temperature and minimum temperature changes of four seasons,changes in the seasonal diurnal temperature were analyzed by linear trend estimation methods. The results showed that,the tendency rates of average minimum temperature over the four seasons were 0.301 ℃/10 a,0.167 ℃/10 a,0.269 ℃/10 a and 0.425 ℃/10 a respectively with significant differences,the largest rising range occured in winter and spring,minimum rising in summer,namely the average minimum temperature over the four seasons during the past 50 years was in a rising stage. The average maximum temperature was increased with 1.505 ℃,0.835 ℃,1.345 ℃,2.125 ℃ respectively. The tendency rates of average maximum temperature over the four seasons were 0.4 ℃/10 a,-0.042 ℃/10 a,0.256 ℃/10 a,0.204 ℃/10 a,namely the average maximum temperature in summer was decreased by 0.21 ℃,while in other seasons was increased with 2 ℃,1.28 ℃,1.02 ℃.
出处
《井冈山大学学报（自然科学版）》
2015年第5期48-52,共5页
Journal of Jinggangshan University (Natural Science)
基金
安徽省高校省级自然科学研究重点项目(KJ2013A244
KJ2014A251)
关键词
平均最低气温
平均最高气温
气温日较差
年代际变化
合肥市
average minimum temperature
average maximum temperature
diurnal temperature range
interdecadal variation
Hefei City
