CAJ | 학술논문

针对2012年6月10—13日杭州地区一次连续雾霾天气过程，利用气象要素及气溶胶观测资料，结合天气形势和HYSPLIT 模式分析了此次雾霾天气过程气溶胶特性及造成严重污染的主要原因。结果表明：杭州地区此次雾霾天气过程以静小风为主，能见度长时间低于2 km，污染物浓度较高。整个雾霾天气过程气溶胶粒子主要以细粒子（＜PM2.5）为主，而超细粒子（＜PM1.0）在雾和不同霾影响阶段表现出不同的变化规律。？ngstrm 波长指数在雾天气和干霾天气时的平均值分别为0.24和0.75，说明雾和霾天气的气溶胶粒径分布具有明显差异。雾霾天气过程气溶胶粒子对能见度的影响散射效应高于吸收效应。气溶胶单次散射反照率在雾霾天气下的高值为0.92—0.96，表明雾霾天气时气溶胶具有较强的光散射能力。秸秆焚烧产生的污染物经过长距离输送、本地污染源排放的稳定贡献及受静稳天气系统共同影响是造成杭州地区此次雾霾天气严重污染的主要原因。
침대2012년6월10—13일항주지구일차련속무매천기과정，이용기상요소급기용효관측자료，결합천기형세화HYSPLIT 모식분석료차차무매천기과정기용효특성급조성엄중오염적주요원인。결과표명：항주지구차차무매천기과정이정소풍위주，능견도장시간저우2 km，오염물농도교고。정개무매천기과정기용효입자주요이세입자（＜PM2.5）위주，이초세입자（＜PM1.0）재무화불동매영향계단표현출불동적변화규률。？ngstrm 파장지수재무천기화간매천기시적평균치분별위0.24화0.75，설명무화매천기적기용효립경분포구유명현차이。무매천기과정기용효입자대능견도적영향산사효응고우흡수효응。기용효단차산사반조솔재무매천기하적고치위0.92—0.96，표명무매천기시기용효구유교강적광산사능력。갈간분소산생적오염물경과장거리수송、본지오염원배방적은정공헌급수정은천기계통공동영향시조성항주지구차차무매천기엄중오염적주요원인。
A serious fog-haze weather process occurred on June 10 to 13,2012.Based on the meteorological data and aerosol data as well as weather situation and a HYSPLIT model,aerosol characteristics and main reasons of pollution in this process were analyzed.The results show that low wind speed,extremely poor visibility (<2 kilo-meters)and high concentrations of pollutants are the major features of this process.Aerosol particles are mainly fine particles (<PM2.5 )in the process,while the ultrafine particles (<PM1.0 )have different variations in fog and different haze periods.Averages of ?ngstrm wavelength exponents are 0.24 and 0.75 in fog and dry haze weath-er,respectively,which suggests that aerosol particle size distributions display a marked difference.The effect of aerosol scattering on visibility is stronger than aerosol absorption.The single scattering albedo with the value of 0.92-0.96 demonstrates that aerosol has strong light scattering ability under fog-haze weather.Pollutant transport over a long distance produced by straw burning,local pollution emissions and static stability weather are the main reasons for this process in Hangzhou.