CAJ | 학술논문

利用WPS(宽范围颗粒粒径谱仪)、雨滴潜仪和雾滴谱仪测量了2007～2008年冬季南京北郊大气气溶胶数浓度谱分布和降水强度,分析了气溶胶粒子的分布特征以及气溶胶粒径与湿清除系数的关系.结果表明:气溶胶粒子具有明显的双峰型R变化特征,数浓度主要集中在0.02～O.2μm粒径范围内,受汽车尾气排放、混合层高度变化以及颗粒物水平输送的影响较大.降雨、降雪和雾过程都对气溶胶粒子有不同程度的清除,降雨和浓雾对核模态和粗模态的气溶胶粒子的清除能力显著,降雪对粒径小于0.03μm的气溶胶粒子的清除能力较强.
이용WPS(관범위과립립경보의)、우적잠의화무적보의측량료2007～2008년동계남경북교대기기용효수농도보분포화강수강도,분석료기용효입자적분포특정이급기용효립경여습청제계수적관계.결과표명:기용효입자구유명현적쌍봉형R변화특정,수농도주요집중재0.02～O.2μm립경범위내,수기차미기배방、혼합층고도변화이급과립물수평수송적영향교대.강우、강설화무과정도대기용효입자유불동정도적청제,강우화농무대핵모태화조모태적기용효입자적청제능력현저,강설대립경소우0.03μm적기용효입자적청제능력교강.
Mcasurements of aerosol particle number concentrations and precipitation intensity during the winter of 2007-2008 were made by Wide-Range Particle Spectrometer(WPS),disdrometer(OTT Parsivel)and fog monitor (FM-100),in the north suburb of Nanjing.The size distribution characteristics of particles and the relationships be-tween particle size and scavenging coefficients were studied.With a bimodal distribution of diurnal variation,the aerosol particle number concentration,which is much affected by vehicle emission,change of boundary layer height,and the advection of particles,mostly falls between 0.02 and 0.2μm Rainfall,snowfall,and fog have different scavenging efficiency on particles.Aitken mode and coarse mode particles are more efficiently scavenged by rainfall and dense fog.Snowfall is efficient in the scavenging of particles smaller than 0.03 m.