气候变化研究进展2025，Vol.21Issue(3)：305-316,12.DOI:10.12006/j.issn.1673-1719.2024.257
中国冻雨变化特征及过程致灾机理分析
New characteristics and mechanism analysis of freezing rain in China
摘要
Abstract
At present,the trend of global warming is still continuing,and the extreme low temperature events in China have decreased significantly in recent decades.However,since the 1990s,the occurrence of extreme low temperature in China has increased,the number of strong low temperature events and the total amount of snowfall have both increased.This trend is expected to continue in the future.In 2024,the most extreme ice and snow event occurred since 2009 occurred,and freezing rain as a kind of low temperature disaster,in this context,it is necessary to conduct research.Based on daily freezing rain(rime)data from January 1961 to December 2022,the spatio-temporal characteristics of freezing rain frequency were systematically investigated across China.The distribution and variation patterns of freezing rain in the whole country were analyzed and a significant large-scale freezing rain event anticipated in February 2024 was examined.The findings indicate that with exceptions for certain high-altitude regions,freezing rain predominantly occurs between September and following May,peaking during winter(December to following February).The average frequency of freezing rain exhibited an initial rise from 1961 to 1975,followed by a rapid decline between 1980 and 1990.Since 2000,the frequency of freezing rain in China has transitioned from a gradual decline to a sharp increase,accompanied by heightened interannual oscillations.Five primary regions were identified as experiencing significant occurrences of freezing rain:Xiang-Gui(Hunan-Guizhou),Ji-Lu-Yu-E(Hebei-Shandong-Henan-Hubei),Shan-Gan-Ning(Shaanxi-Gansu-Ningxia),Hei-Ji-Liao(Heilongjiang-Jilin-Liaoning).As global changes intensify,the frequency of freezing rain in various regions has experienced new variations,with notable variations observed particularly within the Xiang-Gui and Hei-Ji-Liao regions.The analysis of the large-scale freezing rain process projected for February 2024 reveals that under the background of Arctic warming,the path,intensity and influence range of cold air entering China have changed,accompanied by a significant inversion layer and abundant water vapor,which is prone to cause large-scale freezing rain events.关键词
冻雨发生频次/中国/季节变化/年际变化Key words
Frequency of freezing rain/China/Seasonal variation/Interannual variation引用本文复制引用
王韵颖,王国复,张颖娴,郑春怡,黄菲..中国冻雨变化特征及过程致灾机理分析[J].气候变化研究进展,2025,21(3):305-316,12.基金项目
中国气象局创新发展专项(CXFZ2023J071) （CXFZ2023J071）
国家自然科学基金(42075024) （42075024）
国家重点研发计划(2019YFA0607004) （2019YFA0607004）
山东省自然科学基金重大基础研究项目(ZR2019ZD12) （ZR2019ZD12）
