摘要
利用1962-2012年清远市7个气象观测站的日平均气温、最低气温、雨日数资料对清远市寒露风过程进行统计分析,得出51年来清远市总共出现537次寒露风过程,平均每次过程6.4d,过程平均气温20.6℃。寒露风总天数和寒露风过程次数分别以0.532d/年和0.071次/年减少;寒露风过程年平均天数、总天数均为北多南少;北部三连地区年平均寒露风次数在2次以上,南部和阳山1.3次以下;在日期方面,北部三连地区年平均出现寒露风日期在9月下旬,南部和阳山出现平均出现日期在10月上旬到中旬,南北最早和最迟出现日期相差大。寒露风年景方面,清远集中在轻度年景和无出现寒露风过程,佛冈、英德、阳山集中在轻度和中度年景,北部三连地区集中在中度、重度年景。清远市出现的寒露风过程多为干型,其次是湿型,混合型最少。
Based on the daily mean temperature, minimum meteorological stations in Qingyuan City from 1962 to 2012, a reported in Qingyuan City during 51 years, average lasting temperature and rainy day data of seven total of 537 cold-dew-wind processes were days 6.4d and average temperature of 20.6 ℃. The total number of days and the number of processes are declining by 0.532d 和0.071 per year, which show less in northern and more in southern. In the northern area there are 2 times per year, while the southern and Yangshan are belowl.3 times per year; in terms of date, the northern appeared in the end of September, the southern and Yangshan appear on the average date in early October to mid, the earliest and the latest Date in north and south are different. The Qingyuan concentrated in the mild years and there was no cold dew wind process. Fogang, Yingde and Yangshan concentrated in the mild and moderate years. The north area were concentrated in moderate and severe years., the type of cold dew wind processes in Qingyuan are mostly dry type, followed by wet type, mixed at least.
出处
《气象研究与应用》
2017年第1期55-59,共5页
Journal of Meteorological Research and Application
关键词
气候
寒露风
清远
climate
low temperature damage
Qingyuan
