J4 ›› 2007, Vol. 25 ›› Issue (4): 51-55.

• 论文 • 上一篇    下一篇

甘南高原雷暴的气候特征

王建兵   

  1. 甘肃省甘南州气象局,甘肃 合作 747000
  • 收稿日期:2007-07-02 修回日期:2007-08-06 出版日期:2007-12-31 发布日期:2007-12-31
  • 作者简介:王建兵(1968 - ) ,男,甘肃甘谷人,主要从事天气预报、气候研究.
  • 基金资助:

    甘肃省气象局“西北地区防雹消雹技术在甘南州冰雹、雷暴短时临近预报预警中的应用推广研究(2007 - 07) ”课题资助

Clima tic Character istics of Thunderstorm s over Gannan Pla teau

WANG J ianbing   

  1. Gannan M eteorological B ureau, Hezuo 747000, China
  • Received:2007-07-02 Revised:2007-08-06 Online:2007-12-31 Published:2007-12-31

摘要:

利用甘南州8个气象站自建站到2005年的雷暴资料,对雷暴的时空分布特征进行了分析,发现甘南州雷暴多发区位于西南部的玛曲、碌曲到东北部的合作之间;从年际变化看,大部分地方的年雷暴天数呈明显下降趋势,特别是1990年代中期后,这种下降趋势更明显,但各地雷暴初终间日数的变化并不明显;夏季雷暴天气出现最多,出现最多的月份是7月,雷暴次数约占全年雷暴次数的20.2%。春末夏初5月下旬到6月上旬、6月下旬和7月中下旬、8月下旬是各月的雷暴高发时段;甘南雷暴1天中的盛发期在12~20时, 14~15时是雷暴出现的峰值时段。

关键词: 甘南高原, 雷暴, 特征

Abstract:

By using the data of eightweather stations’records of thunderstorms over Gannan p lateau from the beginning of each station’s establishment to 2005, the temporal and spatial distribution features of thunderstormswere analyzed. The results show that thunderstorm occurred more frequently inMaqu, Luqu and Hezuo counties; The annual thunderstorm days p resented descending trend and the trend ismore obvious after the middle of the 1990 s, but the variation of the duration days between the beginning and the ending time of thunderstorm occurring in Gannan p lateau is not very distinct; Summer is thunderstorm season and July is the month in which thundstorms occurmost frequently, and the percentage of thundstorm times in July is 20. 2%. The late sp ring and early summer, the third ten - day of June, the second and third ten - day of July, the third ten - day ofAugust are the peak periods for thunderstorms occurring in Gannan; The daily thunderstorm occurring peak time is 14: 00 - 15: 00, and the percentage of thundstorm times is 30. 3% in this period.

Key words: Gannan Plateau, thunderstorms, climatic

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