CAJ | 학술논문

针对2012年珠江三角洲地区出现的2个典型灰霾个例(3月18~21日,10月13~15日),利用广州番禺大气成分综合观测基地的同期观测资料集,包括：能见度(VIS)、大气颗粒物质量浓度(PM10/PM2.5/PM1)、黑碳浓度(BC)等观测数据,分析过程中的气溶胶物理光学特征；配合过程的天气类型,气象要素和后向气流轨迹等对过程的成因进行综合分析.结果表明：在两个典型灰霾过程中,番禺日均能见度低至5.3km,黑碳浓度小时均值最高达19.0μg/m3、PM2.5浓度小时均值最高达163.0μg/m3,细粒子与黑碳粒子污染特征较为明显.两次典型灰霾过程分别受到冷锋前-均压场-冷锋前天气形势和台风外围-准均压场-冷锋前天气类型等不利于污染物输送扩散的气象条件影响.珠江三角洲地区低能见度的霾天气主要发生在高相对湿度的条件下,并可推断在珠江三角洲地区湿季的气溶胶吸湿能力明显高于干季.
침대2012년주강삼각주지구출현적2개전형회매개례(3월18~21일,10월13~15일),이용엄주번우대기성분종합관측기지적동기관측자료집,포괄：능견도(VIS)、대기과립물질량농도(PM10/PM2.5/PM1)、흑탄농도(BC)등관측수거,분석과정중적기용효물리광학특정；배합과정적천기류형,기상요소화후향기류궤적등대과정적성인진행종합분석.결과표명：재량개전형회매과정중,번우일균능견도저지5.3km,흑탄농도소시균치최고체19.0μg/m3、PM2.5농도소시균치최고체163.0μg/m3,세입자여흑탄입자오염특정교위명현.량차전형회매과정분별수도랭봉전-균압장-랭봉전천기형세화태풍외위-준균압장-랭봉전천기류형등불리우오염물수송확산적기상조건영향.주강삼각주지구저능견도적매천기주요발생재고상대습도적조건하,병가추단재주강삼각주지구습계적기용효흡습능력명현고우간계.
Two typical hazy weather events which occurred in the Pearl River Delta (PRD) cities from Mar. 18 to Mar. 21 and from Oct. 13 to Oct. 15, 2012respectively were selected in this paper. A comprehensive analysis of the causes of the events was made by using the in-situ measurement of visibility (VIS), aerosol mass concentration (PM10/PM2.5/PM1), the concentration of black carbon (BC) at an integrated observation base for atmospheric composition in Panyu, Guangzhou, the weather type, meteorological elements and backward airflow trajectory during these events. The results are shown as follows: Daily visibility was as low as 5.3km, black carbon’s hourly concentration value was up to 19.0μg/m3, PM2.5’s hourly concentration was 163.0μg/m3at its highest. These two events were affected by the weather conditions which weren’t conducive to the transport or spread of pollutants. In PRD, low visibility of haze weather occurs mainly in condition of high relative humidity. It is deduced that aerosol has greater hygroscopicity in the dry season than in the wet season in this region.