摘要
本文以化德县2008年3-5月的空气总悬浮颗粒物浓度及气象因素的监测数据为依据,分析沙尘天气状况,同时采用相关分析法对TSP浓度与各气象因素之间的相关关系进行分析。结果表明:根据空气总悬浮颗粒物浓度的沙尘天气分级标准,化德县2008年3-5月共发生8次沙尘天气,其中浮尘天气发生了4次,占50%;扬沙天气发生3次,占37.5%;沙尘暴只发生了1次,占12.5%。从沙尘天气发生的频率来看,5月最高,3月次之,4月最低。TSP浓度与气压和降水量呈负相关,与气温和风速呈正相关,且与气压和风速的相关性显著。3月和5月的TSP浓度主要受气温影响,4月受风速和降水的共同影响。
Based on the observational data of the concentration of particulars in the air and meterological elements for March,April and May of 2008,the paper studied the conditions of sand-dust events in Huade.Using the method of correlative analysis,the correlation between the concentration of TSP and meterological elements was analyzed.The results showed that: according to the classification of sand-dust event basic on the concentration of TSP,sand-dust events occured eight times in Huade,including four times floating-dust,three times blowing-dust and only once sandstorm,accounting for 50%,37.5% and 12.5% respectively.Most of them occured in May.The concentration of TSP had a significantly positive correlation with the wind speed,and significantly negative correlation with the pressure.But the positive correlation with the temperature and negative correlation with the precipitation were weak.In March and May,the concentration of TSP was mainly influenced by temperature,while the wind speed and precipitation were both important factors in April.
出处
《环境与发展》
2011年第10期124-128,共5页
Environment & Development
