CAJ | 학술논문

总结了近年来不同地区对不同环境下大气超细颗粒物的观测和扩散模拟研究进展.大量的观测研究结果表明,大气超细颗粒物的时空分布、组成特征、形成和成长的特性因观测地区的不同而存在很大差异,受气象因素和局部污染源的影响很大;其来源主要包括固定、移动燃烧源的直接排放和大气中颗粒成核现象,前一种来源一般是局部的,而后一种来源则是区域性的.目前,大多数关于大气超细颗粒物扩散的模拟研究都是针对其质量浓度的,对其数浓度扩散的模拟研究主要集中在小范围(机动车排放烟云的研究方面),在城市区域范围上的研究和应用还很少.最后,探讨和展望了大气超细颗粒物今后的主要研究方向和研究中面临的挑战.
총결료근년래불동지구대불동배경하대기초세과립물적관측화확산모의연구진전.대량적관측연구결과표명,대기초세과립물적시공분포、조성특정、형성화성장적특성인관측지구적불동이존재흔대차이,수기상인소화국부오염원적영향흔대;기래원주요포괄고정、이동연소원적직접배방화대기중과립성핵현상,전일충래원일반시국부적,이후일충래원칙시구역성적.목전,대다수관우대기초세과립물확산적모의연구도시침대기질량농도적,대기수농도확산적모의연구주요집중재소범위(궤동차배방연운적연구방면),재성시구역범위상적연구화응용환흔소.최후,탐토화전망료대기초세과립물금후적주요연구방향화연구중면림적도전.
Base on the comprehensive literature review, this paper summarized the recent studies on measure-ments and simulations of atmospheric ultrafine particles in various regions and environments. The observations show that the time-spatial variations, formation and growth, compositions of ultrafine particles are strongly related to mete-orological conditions and local pollution sources, therefore, the characteristic of ultrafine particles varied widely in dif-ferent regions. The ultrafine particles can be directly emitted from combustion processes both stationary and mobile sources, or formed in the atmosphere through nucleation. Some aerosol dynamic module contained particulate number concentration diffusion models are introduced, but most of them are applied in a motor vehicle emission simulation.Little research has been conducted in applying particle number concentration simulation to city range. Finally, this pa-per provides and discusses the challenges to address the ultrafine particles pollution.