本文利用长武县气象局 1960-2017 年近 58 年气温和降水的观测数据,运用线性回归、滑动平均、Mann-Kendall突变检验等研究方法,初步研究了长武县近 58 年气温和降水量变化特征.结果表明:在 1960-2017 年间,长武县年均温明显升高,增长速率为 0.18℃/10 a,并在 2004 年发生趋势性突变;最冷月、最热月的平均气温都显著上升,增温速率分别为 0.13℃/10 a和 0.06℃/10 a;1960-2017 年间,长武县年降水量明显下降,下降速率为 4.31 mm/10 a,未发生趋势性突变;汛期降水量整体呈波动上升趋势,上升速率为 3.65 mm/10 a,汛期降水量很大,约占年降水量的 82%.
Based on the observational data of temperature and precipitation from Changwu County Meteorological Bureau during 1960-2017,this paper studied the change characteristics of temperature and precipitation in recent 58 years in Changwu County by using linear regression,moving average and Mann-Kendall mutation test.The results showed that,during the period of 58 years from 1960 to 2017,the average annual temperature in Changwu County increased significantly,with an increase rate of 0.18℃/10 a,and a tendential sudden change occurred in 2004.The average temperature of the coldest month and the hottest month increased significantly,with increase rates of 0.13℃/10 a and 0.06℃/10 a,respectively.During 1960-2017,the annual precipitation in Changwu County decreased obviously,the decrease rate was 4.31 mm/10 a,and there was no tendential sudden change.The precipitation in flood season generally fluctuated upward,with an increase rate of 3.65 mm/10 a,and the precipitation in flood season was very large,accounting for about 82%of the annual precipitation.
郭勇
甘肃省武威第二中学,甘肃武威 733000
大气科学
降水;气温;变化特征;甘肃长武;1960-2017 年
precipitation;temperature;change characteristic;Changwu Gansu;1960-2017
《现代农业科技》 2024 (008)
106-109,114 / 5
10.3969/j.issn.1007-5739.2024.08.028
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