摘要
利用鄂托克前旗1981—2020年的气象资料,用线性倾向估计法、累积距平法、M-K法进行气候变化特征及突变分析。结果表明:建旗40周年来,鄂托克前旗气候呈气温升高、降水量略增、日照增多、风沙减少的暖湿化趋势,但目前的暖湿趋势仅为量的变化,不足以改变半干旱的基本气候特征。各气象要素在不同年份发生不同程度的突变。气温、降水具有明显的季节性变化差异,春季增温最明显,夏、冬季次之;春、夏季降水量呈减少的趋势,秋、冬季呈增加的趋势。大风、扬沙、沙尘暴日数均呈明显减少趋势,2013年后没有再出现沙尘暴天气。年日照时数2013年后显著增加,年相对湿度变化范围不大。
Based on the meteorological data from 1981 to 2020 in Etuokeqian banner,the characteristics and abrupt changes of climate change were analyzed by using linear trend estimation method,cumulative anomaly method and M-K method.The results show that:since the 40th anniversary of the establishment of Etuokeqian banner,the climate of Etuokeqian banner has a warming and humidifying trend of increasing temperature,slightly increasing precipitation,increasing sunshine and decreasing wind sand,but the current warming and humidifying trend is only the change of quantity,which is not enough to change the basic climate characteristics of semi-arid.The abrupt changes of meteorological elements occurred in different years.The temperature and precipitation have obvious seasonal variation differences,the most obvious temperature increase in spring,followed by summer and winter;The precipitation in spring and summer shows a decreasing trend,while the precipitation in autumn and winter shows an increasing trend.The days of gale,sand blowing and sandstorm showed a significant decrease trend,and there was no sandstorm after 2013.The relative humidity range increased little after 2013.
作者
靳文娅
JIN Wen-ya(Meteorological Bureau of Etuokeqian Banner,Erdos Inner Mongolia 016200)
出处
《农业灾害研究》
2021年第3期28-29,32,共3页
Journal of Agricultural Catastrophology
关键词
鄂托克前旗
气候变化
累积距平法
M-K法
突变
Etuokeqian banner
Climate change
Cumulative anomaly method
M-K method
Abrupt change
