1971—2021年新兴县低温霜冻日的气候特征  

On the Climatological Characteristics of Chilly Temperature and Frosty Days in Xinxing County from 1971 to 2021

作　　者：伍小红 林青 孔正圆 周忠锭 钟火金 何奂 WU Xiao-hong;LIN Qing;KONG Zheng-yuan;ZHOU Zhong-ding;ZHONG Huo-jin;HE Huan(Xinxing Meteorological Service,Xinxing 527400;Wengyuan Meteorological Service,Wengyuan 512600;Yu’nan Meteorological Service,Yu’nan 527100;Yunfu Meteorological Service,Yunfu 527300)

机构地区：[1]新兴县气象局,广东新兴527400 [2]翁源县气象局,广东翁源512600 [3]郁南县气象局,广东郁南527100 [4]云浮市气象局,广东云浮527300

出　　处：《广东气象》2024年第2期35-37,共3页Guangdong Meteorology

基　　金：太平镇象窝茶种植气候分析与防灾增产研究。

摘　　要：基于新兴县国家气象站1971—2021逐日气温资料,采用线性趋势分析、多项式拟合、小波分析等方法,研究了新兴县低温霜冻日气候特征。结果表明:1971—2021年新兴县年平均低温、霜冻日数分别为10.5、和4.8 d,并分别以每年0.2、0.1 d的速率显著减少。低温、霜冻日数分别在20世纪70年代和80年代日较多,21世纪10年代日较少。低温、霜冻日数在1和12月最多,3月最少。在时间周期尺度上,存在多重嵌套结构现象。Based on the data of daily air temperature from a national meteorological station in Xinxing from 1971 to 2021 and with the methods of linear tendency analysis,polynomial fitting,Mann⁃Kendall ab⁃ruptness test and wavelet analysis,this paper studied the climatological characteristics of chilly temperature and frosty days in the county.The result is shown as follows.The annual average numbers with chilly tem⁃perature and frosty days were 10.5 and 4.8 d respectively,which were decreasing significantly at the rates of 0.2 and 0.1 d per year respectively.These numbers were larger in the 1970s and 1980s than in the 2010s.They were the most in January and December but the least in March.They decreased abruptly around 2010.Multiple nested structure and abrupt changes were found on the scale of temporal period.

关 键 词：气候学 低温 霜冻 新兴县 

分 类 号：P46[天文地球—大气科学及气象学]