摘要
利用1965年~2006年河北省16个代表站的气象观测资料,采用EOF以及Mann-Kendall等统计方法,详细分析了浓雾、强浓雾的时空特征、日变化规律及年代际变化。结果发现:浓雾、强浓雾年均日数分别为5d、1d,平原站浓雾、强浓雾日数明显较多,秋、冬季是它们的多发季节,12月是多发月;浓雾、强浓雾发生的峰值时间都在晚上20点后到次日早晨7点之间,消散的主要时间均在8点到12点之间,而且均表现为3~6h的出现频率最高;二者呈现增加的年代际变化趋势。
Based on the observational data from 16 meteorological stations in Hebei Province during 1965-2006,temporal and spatial feature,day variational law and inter-decadal variations of dense fog and strong fog were detailedly analyzed by using EOF and Mann-Kendall methods.Results showed that annual days of dense fog and strong fog are 5d and 1d respectively,their days in plain are more,The season of multi-dense fog and multi-strong fog are in autumn and winter,their frequency in december is the highest.The starting time of dense fog and strong fog occuring is from 20:00 to 7:00 of the next day.The ending time is from 8:00 to 12:00.3-6h of the dense fog and strong fog are the most.Inter-decadal variations for them showed upward trend.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2011年第8期94-100,共7页
Journal of Arid Land Resources and Environment
关键词
浓雾
强浓雾
时空特征
日变化
年代际变化
dense fog; strong fog; spatial and temporal characteristics; day variety; inter-decadal variations