摘要
对商丘市1961～2000年的年日照和各季节日照资料的分析表明,商丘市年日照时数和各季节日照时数都存在不同程度的减少趋势,年日照时数减少率约为22 h/a,且这种减少的趋势在变缓.使用Mann-Kendall法进行突变检测表明,商丘市年日照时数和各季节日照时数在1982年存在突变现象.
Using the sunshine hour data during the period of 1961 ～ 2000, we indicated that the decreasing trends during the four seasons were different. The yearly decreasing rate was 22h per year, and these trends are still getting slowly. By the abrupt change detecting with Mann - Kendall, the results showed that, the yearly and seasonal sunshine hours abruptly change in 1982.
出处
《河南气象》
2005年第4期16-17,共2页
Meteorology Journal of Henan
关键词
气候变化
日照时数
突变
Climate change
Sunshine hour
Abrupt change
