The North China Plain(NCP)is troubled by severe haze pollution and the evolution of haze pollution is closely related to the atmospheric boundary layer(abl).However,experimental and theoretical studies on the physical...
详细信息
The North China Plain(NCP)is troubled by severe haze pollution and the evolution of haze pollution is closely related to the atmospheric boundary layer(abl).However,experimental and theoretical studies on the physical-chemical processes of the abl in the NCP are lacking,with many scientific problems to be *** solve these problems,the Comprehensive Observation on the Atmospheric boundary layer three-dimensionalstructure(COATS)during haze pollution was carried out in the NCP from 2016 to *** COATS experiment adopted a"point-line-surface"spatial layout,obtaining both spatial-temporal profiles of the meteorological and environmental elements in the abl and the turbulent transport data of fine particulate matter(PM_(2.5))in winter and *** research achievements are as *** spatial-temporal distribution characteristics of the ablstructure and PM_(2.5)concentrations in NCP were *** typical thermal structure of persistent heavy haze events and the pollutant removal mechanism by low-level jets were *** was determined that the spatial structure of the abl adjusted by the Taihang Mountains is responsible for the heterogeneous distribution of haze pollution in the NCP,and that mountain-induced vertical circulations can promote the formation of elevated pollution *** restraints of the atmospheric internal boundaries on horizontal diffusion of pollutants were *** contribution of the abl to haze pollution in winter and summer was qualitatively compared and quantitatively *** turbulent transport nature behind the relationship between the atmospheric boundary layer height(ablH)and surface PM_(2.5)concentrations was *** concept of"aerosol accumulation layer"was defined,and the applicability of the material method in determining ablH was clarified.A measurement system for obtaining the turbulent flux of PM_(2.5)concentrations was developed,and the turbulence characteristics of PM_(2.5)concentrations w
暂无评论