【摘要】 利用2002-2006年厦门市空气质量监测资料和气象资料,对厦门市空气质量的时空分布特征及其与气象条件的关系进行分析.结果表明:厦门市空气质量优良率达98%,PM10和SO2年平均浓度变化不明显,NO2年平均浓度则呈逐年上升趋势;PM10、SO2和NO2浓度的月变化趋势基本相同,月平均浓度7月份最低,而出现平均浓度高值的月份则有所差异.各污染物浓度在一定区域范围内存在同相位变化特征.PM10浓度在大陆高压、暖区辐合系统控制下最高,副热带高压和低涡控制时最低,副热带高压控制时未曾出现轻微以上污染,暖区辐合系统中出现轻微以上污染最多;风向变化对厦门市SO2和NO2浓度分布影响不明显,偏南风下厦门市空气质量出现优的概率高,但出现轻微以上污染也多,北风影响下空气质量为优的概率最小,但未曾有轻微以上污染.更多还原

【Abstract】 Based on the monitoring data of air quality and meteorological data from 2002 to 2006 in Xiamen,the temporal and spatial distribution of air quality and its relationship with meteorological conditions were analyzed.The results showed that,the probabilities of excellent and good grade for air quality were up to 98%.The annual average concentration of PM10 and SO2 changed little,while the annual average concentration of NO2 showed an increasing trend year by year.The monthly changing trends of the concentration of PM10,NO2 and SO2 were similar,as the monthly average concentrations were lowst in July,while the high values appeared in different month in these years.Within a certain area coverage,the concentration of air pollutants in Xiamen City displayed significant region-synchronism characteristics.The concentration of PM10 was highest when Xiamen City was in the control of continental high and warm sectors convergence,and was lowest in the control of subtropical high and low vortex.Under the control of subtropical high there was not any pollution occurring ever,while under the control of warm sectors convergence,there would be most slight or above pollution occurring.The variation of wind directions exerted little influence on the distribution of the concentration of NO2 and SO2.The probability of excellent grade for air quality was highest in southerly winds,and so was the probability of slight or above pollution occurring,while in northerly winds,the probability of excellent grade was lowest,and there was not any slight or above pollution occurring ever.更多还原