In view of climate characteristics such as frequent continuous rainy weather,low clouds and low visibility,and thunderstorm at Shanghai Hongqiao International Airport in spring( from March to May),observation and re...In view of climate characteristics such as frequent continuous rainy weather,low clouds and low visibility,and thunderstorm at Shanghai Hongqiao International Airport in spring( from March to May),observation and record data during 1986-2015 were used to conduct statistical analysis,and the important periods and characteristics of meteorological elements influencing flight at the airport in spring were found based on years of observation experience.展开更多
文摘In view of climate characteristics such as frequent continuous rainy weather,low clouds and low visibility,and thunderstorm at Shanghai Hongqiao International Airport in spring( from March to May),observation and record data during 1986-2015 were used to conduct statistical analysis,and the important periods and characteristics of meteorological elements influencing flight at the airport in spring were found based on years of observation experience.
文摘利用上海虹桥机场1986~2008年的雷暴观测资料,分析了虹桥机场雷暴日数、雷暴时数和雷暴持续时间的长期变化特征.结果表明,1986~2008年虹桥机场的雷暴日数和雷暴时数呈现先缓慢下降后迅速上升的变化趋势,2000年左右是转折点;雷暴主要发生在夏季(65.95%)和春季(23.36%),其发生具有明显的日变化特征和季节差异,夏季雷暴主要发生在午后到上半夜,而春季雷暴主要出现在夜间,这与不同季节雷暴的促发机制有关.利用雷暴持续时间度量雷暴强度,发现持续时间为0~1和1~2h的雷暴发生频数最多,不同强度的雷暴均集中在夏季发生,统计时段内最长的一次雷暴过程持续时间达12.5 h.