摘要
通过分析商丘国家基准气候站1961—2011年的季、年平均气温、降水量、日照时数、蒸发量、冬季负积温等资料,得出结果表明,商丘近51年来的气候变化特点是:温度年和春、秋、冬三季均呈上升趋势,年平均气温倾向率为0.166℃/10a,三季中以冬季增温最为显著,夏季温度则略有下降;年降水呈增多趋势,其倾向率为14.93 mm/10a;年日照时数、冬季负积温、≥35℃日数、≤-5℃日数均呈减少趋势,其倾向率分别为:-180.15 h/10a,-127.00 mm/10a,-11.84℃·d/10a,-2.27 d/10a,-3.81 d/10a;蒸发量分两个阶段分析,1961—2001年年及四季蒸发量均呈减少趋势,2002—2011年年和春季蒸发量呈上升趋势,夏、秋、冬三季呈下降趋势.
Based on the anlysis of the seasonal and annual average temperature, precipitation, sunlight, evaporation and the negative accumulated temperature in winter, the characteristics of climate changes of Shangqiu in recent 51 years was showed. The annual temperature and temperature in spring,autumn,winter showed an increasing trend especially in winter, the average annual temperature trend rate was 0.166 ℃/10a. The temperature in summer decreased slightly. The trend of the annual precipitation increased, and the rate was 14.93 mm/10a. The annual sunshine hours, the negative accumulated temperature in winter, the days of temperature 935 ℃ and 4-5 ℃ showed an declined trend,the rate were -180.15 tdl0a,-127.00 mm/10a,-11.84 ℃ ·d/10a,-2.27 d/10a,-3.81 d/10a. The annual and seasonal evaporation in 1961--2001 had a decreasing trend. In 2002--2011,the evaporation of the total year and spring increased, but decreased in summer, autumn and winter.
出处
《河南科学》
2013年第8期1262-1266,共5页
Henan Science
关键词
商丘
气候变化
分析
Shangqiu
climate change
analysis
