摘要
对1958—2007年福海县大风天气资料进行统计分析。结果表明:20世纪50—70年代福海县为大风天气的多发年代,80年代开始呈明显下降趋势,1993年之后年大风日数稳定在20 d左右;春季大风最多,冬季最少;大风持续时间多在0—5h之间,持续时间大于等于19 h的大风过程多出现在春秋季;大风出现月份为5—8月,以下午机率最多,其他月份无明显差异;平原地区大风最多,中低山区次之,沙漠地区最少;春夏季多偏西风,秋冬季多偏东风,且偏西风风速大于偏东风风速,最大风速多为偏西风。
The windy weather characteristics were analyzed based on the meteorological data from 1958 to 2007 at Fuhal county. The results show that the windy weather often appears from 1950s to 1970s, and it obviously decreases since 1980s. The number of annual windy days is about 20 days after 1993. The windy days are the most in spring and the least in winter. The windy duration is about 0-5 hours. The windy weather that the duration is more than 19 hours usually happens in spring and autumn. The windy weather often appears from May to August, especially in the afternoon. There is not obvious difference in other months. The windy weather often occurs in plain areas, followed by middle and lower mountain areas, and is the least in desert areas. Westerly wind often happens in spring and summer, and easterly wind is in autumn and winter. The wind speed of westerly wind is greater than that of easterly wind. The maximum wind speed often comes from westerly wind.
出处
《气象与环境学报》
2009年第6期52-55,共4页
Journal of Meteorology and Environment
关键词
大风
时空分布
统计分析
福海
Gale
Temporal-spatial distribution
Statistical analysis
Fuhai county
