【作者】 卞韬； 任国玉；

【Author】 Bian Tao;Ren Guoyu;Shijiazhuang Meteorological Bureau;Laboratory for Climate Studies, CMA;

【机构】 河北省石家庄市气象局； 中国气象局气候研究开放实验室国家气候中心；

【摘要】 利用石家庄气象站和附近4个乡村站1962-2009年的逐日气温,比较分析了石家庄城市站和乡村站极端气温指数序列的时间变化趋势,以及城市化对石家庄气象站各极端气温指数趋势变化的影响。结果表明:近48年,城市站和乡村站之间的年极端气温指数序列趋势存在明显差异;城市化因素对石家庄站全年炎热日数、寒冷日数、霜冻日数、日较差和极端最低气温长期趋势变化的影响非常显著,城市化影响的量级分别达到1.05 d/10a、-2.5 d/10a、-2.8 d/10a、-0.23℃/10a和0.75℃/10a,城市化贡献率分别达到100%、37.2%、43%、45.1%和47.9%;城市化对极端最高气温的趋势变化影响也比较显著,达到0.13℃/10a,但对结冰日数、最高气温的极小值和最低气温的极大值的长期趋势变化影响不明显。更多还原

【Abstract】 Based on daily temperature datas from an urban station and four suburban stations of Shijiazhuang area during 1962-2009,this research analyzes the trends of extreme temperature indices series of the urban station and rural stations, and the urban effect on the extreme temperature indices of the urban station. The results show that the trends of annual extreme temperature indices between the urban station and the rural stations are significantly different. Urban effect on the long-term trends of hot days, cold days, frost days, diurnal temperature range(DTR) and extreme minimum temperature are all statistically significant, reaching 1.05 d/10 a,-2.5 d/10 a,-2.8 d/10 a,-0.23 ℃/10 a and 0.75 ℃/10 a respectively,with the contributions to the overall trends reaching 100%, 37.2%, 43%, 45.1% and 47.9% respectively. The urban effect on trend of extreme maximum temperature is also significant, reaching 0.13 ℃/10 a. However, no significant urban effect on trends of ice days, minimum values of maximum temperature and the maximum values of minimum temperature has been detected.更多还原