【摘要】 根据云浮市1965～2010年46年的低温霜冻资料,用统计和直观的折线图等方法,总结出云浮市低温霜冻的气候特征:云浮市低温霜冻经常出现在12月下旬到1月上旬的隆冬季节,低温和霜冻的逐年分布不均匀,出现日数呈明显减少趋势;结合日常的低温霜冻预报经验,认为有两种典型的环流形势常造成云浮低温霜冻天气,西路或中路南下路径的中等偏强冷空气对云浮影响较大,T639、日本数值预报对预报低温霜冻具有很好的参考价值,结合单站要素特征,归纳总结出一些低温霜冻预报指标和技巧,这对云浮市的低温霜冻预报有一定的借鉴作用。更多还原

【Abstract】 Characteristics of chilly temperature and frost weather are analyzed by statistics,with observational data from 1965 to 2010 in Yunfu city.Chilly temperature and frost weather mainly occur in late December and early January.Chilly temperature and frost day shows a declining trend with uneven distribution annually.According to local forecast experiences,two typical circulation patterns often lead to chilly temperature or frost weather,and cold air mass with medium to strong intensity,via west or middle path,will have significant influences on Yunfu.Combining T639 and JMA model with analysis of local weather elements,the paper concludes some useful forecast indices for chilly temperature and frost forecast.更多还原