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当前位置: 首页 > 文章 > 近55年郴州市霜冻变化特征分析 安徽农业科学 2018 (12) 165-168
Position: Home > Articles > Analysis on the Change Characteristics of Frost in Chenzhou City in the Past 55 Years Journal of Anhui Agricultural Sciences 2018 (12) 165-168

近55年郴州市霜冻变化特征分析

作  者：
李杰;夏春柳;罗园
单  位：
湖南苏仙岭-万花岩风景名胜区管理处;湖南省郴州市气象局
关键词：
霜冻;变化趋势;异常特征;郴州市
摘  要：
利用1961—2015年郴州10个地面气象站均一性订正后的逐日最低气温资料,统计出日最低气温≤0℃的日期,采用线性倾向估计法、多项式趋势分析、功率谱分析、正态分布原理等方法,研究近55年来郴州市初、终霜冻和无霜期变化特征。结果表明,近55年来郴州市平均终霜日为2月15日,平均初霜日为12月1日,平均无霜期为280 d。郴州市霜冻呈现平均初霜日推迟(速率0.874 d/10 a)、平均终霜日显著提前(速率4.216 d/10 a)、平均无霜期延长(速率3.443 d/10 a)的趋势。郴州市初、终霜日存在一个2.30年的周期,终霜日存在一个9.14年的主周期,无霜日存在一个16.00年的周期。郴州市特早初霜冻发生频率为1.8%~7.3%,偏早初霜发生频率为5.5%~14.6%,特晚终霜冻发生频率为1.8%~5.5%,偏晚终霜冻发生频率为5.5%~18.2%。
译  名：
Analysis on the Change Characteristics of Frost in Chenzhou City in the Past 55 Years
作  者：
LI Jie;XIA Chun-liu;LUO Yuan;Chenzhou City Meteorological Bureau;Hunan Suxianling-Wanhuayan Scenic Area Management Office;
关键词：
Frost;;Change trend;;Abnormal features;;Chenzhou City
摘  要：
Using the daily minimum temperature data after the uniform correction of 10 surface weather stations in Chenzhou from 1961 to2015,the date for the daily minimum temperature of ≤ 0° C was calculated. The change characteristics of the initial,final frost and frost-free period in Chenzhou City in the past 55 years were studied by linear propensity estimation method,polynomial trend analysis,power spectrum analysis,normal distribution principle and other methods. The results showed that in the past 55 years,the average final frost day in Chenzhou was February 15,the average initial frost day was December 1,and the average frost-free period was 280 days. The frost of Chenzhou City showed the tendency of the average initial frost date being delayed( rate 0. 874 d/10 a),the average final frost date significantly advanced( rate4. 216 d/10 a),and the average frost-free period extending( rate 3. 443 d/10 a). There was a period of 2. 30 years at the initial,final frost in Chenzhou City. There was a main period of 9. 14 years on the final frost day,and a period of 16. 00 years exists on the frost-free period. The frequency of special early initial frost in Chenzhou City was 1. 8%-7. 3%,the frequency of partial early initial frost was 5. 5%-14. 6%,the frequency of special late final frost was 1. 8%-5. 5%,and the frequency of partial late final frost was 5. 5%-18. 2%.

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