马鞍山地区雷暴时空分布特征

根据1959—2011年马鞍山市、含山县、当涂县、和县4个地面气象观测站雷暴资料、2005—2010年安徽省闪电定位监测资料,运用surfer、ArcGIS软件以及本地GIS信息分析了马鞍山地区雷电活动的时空分布特征。结果表明:在空间上马鞍山多雷区主要集中在含山县中东部、和县北部、市区北部;时间分布上雷暴日数呈下降趋势;季节性分布上主要集中夏季;日变化明显,主要发生在午后13:00至夜间;年际变化呈明显的波动下降的特点,并有一定的阶段性,特别是20世纪80年代后期雷暴日数下降趋势显著。

Spatial and Temporal Distribution Characteristics of Thunderstorm in Maanshan Region

According to Thunderstorm data of four meteorological stations , including Maanshan City , Hanshan County , Hexian County and Dangtu County from 1959 to 2011 , lightning location monitoring data of Anhui Province from 2005 to 2010 , using the surfer , ArcGIS software as well as the local GIS information , the temporal and spatial distribution characteristics of lightning activity in Maanshan regions were analyzed. The results showed that in the space of Maanshan multiple minefields were mainly concentrated in the mid-east of Hanshan County , north of Hexian County , north of urban district. The temporal distribution of the number of thunderstorm days showed downward trend. Seasonal distribution mainly concentrates in summer. Diurnal changes significantly , mainly occurs in the afternoon 13 : 00 to night. Interannual variation was obvious fluctuation characteristic of the drop , and showed certain stages , especially in later period of 1980s , the number of thunderstorm days declined significantly.