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投稿时间:2007-02-07 修订日期:2007-06-14
投稿时间:2007-02-07 修订日期:2007-06-14
中文摘要: 采用山东省近41年冬季逐日降雪资料和近25年历年11月的海温资料,运用数理统计
及小波分析方法,对山东半岛冬季冷流降雪的时空分布特征、演变规律及其与前期11月渤海
海
温的关系进行了诊断分析。结果表明,降雪分布与丘陵地形密切相关,主要集中在半岛的东
北部,自东北向西南地区降雪量急剧减少;暴雪分布具有显著的中尺度特征;冷流降雪以12
月最为显著;小波分析表明冷流降雪的主要周期为4年、7年和17年左右;11月渤海海温
偏高时,降雪偏多的可能性较大,反之降雪则偏少。
Abstract:With statistical and wavelet analysis, snowfall data in recent 41a and SST
of November in recent 25a are analyzed for cold airflow snowfall in Shandong Pe
ninsula in winter. The results show that snow distribution has close relation to
the landform with more snowfall in the northeast peninsula and less snowfall in
the other areas. Cold airflow snowstorms are of remarkable mesoscale character
and often occur in December. By using wavelet analysis it is also found that t
he main period is about 4, 7 and 17 years. The statistical analysis shows that S
ST of Bohai sea in November is remarkably useful signal for cold airflow snowfa
ll prediction in winter.
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基金项目:中国气象局新技术推广项目、灾害天气国家重点实验室开放课题“山东半岛冷
流暴雪的中尺度特征研究”
引用文本:
杨成芳,周雪松,王业宏,2007.山东半岛冷流降雪的气候特征及其前兆信号[J].气象,33(8):76-82.
Yang Chengfang,Zhou Xuesong,Wang Yehong,2007.Climatic Features and Previous Signal of Cold Airflow Snowfall in Shandong Peninsula[J].Meteor Mon,33(8):76-82.
杨成芳,周雪松,王业宏,2007.山东半岛冷流降雪的气候特征及其前兆信号[J].气象,33(8):76-82.
Yang Chengfang,Zhou Xuesong,Wang Yehong,2007.Climatic Features and Previous Signal of Cold Airflow Snowfall in Shandong Peninsula[J].Meteor Mon,33(8):76-82.