摘要
利用广东省86个测站1981—2010年逐日气象资料,统计了广东省春运期间的气温、降水及影响春运的低温冰冻、大雨、雾等灾害性天气气候特征。结果表明:近30年来,春运期间平均气温呈增加趋势,极端最低气温却呈下降趋势,2000年后,平均气温和极端最低气温的年际变化幅度明显增大;低温冰冻高发区集中在粤北且略有增加趋势,南部则几乎没有发生过冰冻;大雨高发区集中在粤北,向南依次减少,广东省大雨发生日数均呈减少趋势;雾的高发区集中在汕头、珠江口及雷州半岛,其中新兴等地增加趋势显著,而雷州等地则有明显减少趋势。研究结果为春运相关部门制定防灾对策,合理调配人力、物力和财力等社会资源提供了参考依据。
Based on daily data of 86 meteorological stations in Guangdong during annual transportations for Spring Festival, the characteristics of three types of hazardous weather in 1981-2010 are analyzed. The results show that average temperature has an increasing trend while extremely low temperature has a decreasing trend. Their annual variations increased after 2000. Freezing mainly occurs in the north part of Guangdong at increasing frequencies. Heavy rainfall has a similar spatial distribution pattern as freezing but with a decreasing tendency all over the province. Fog probability shows an obvious increasing tendency in Gaoyao and Xinxing and decreasing tendency in Doumen and Leizhou Peninsula. These results will support the government in making strategies against hazardous weather during the annual transportation for Spring Festival.
出处
《热带气象学报》
CSCD
北大核心
2013年第2期347-352,共6页
Journal of Tropical Meteorology
基金
广东省科技计划项目(2009A030302013)资助
关键词
气候学
气候特征
统计分析
灾害性天气
低温冰冻
climatology
climatic characteristics
statistical analysis
hazardous weather
chill and freeze
