Temporal and diurnal variations of carbonaceous aerosols and major ions in biomass burning influenced aerosols over Mt. Tai in the North China Plain during MTX2006
Aerosols
; Agricultural wastes
; Agriculture
; Air quality
; Atmospheric aerosols
; Atmospheric chemistry
; Biomass
; Carbon
; Dust
; Factorization
; Incineration
; Organic carbon
; Troposphere
; Waste incineration
; Biomass-burning
; Carbonaceous aerosol
; Mt. Tai
; PMF analysis
; Temporal variation
; Atmospheric movements
; carbon
; chemical compound
; ion
; organic carbon
; unclassified drug
; water soluble organic carbon
; aerosol
; air quality
; atmospheric pollution
; atmospheric transport
; biomass burning
; concentration (composition)
; diurnal variation
; dust
; ion
; nitric oxide
; numerical model
; solid waste
; temporal variation
; troposphere
; wind direction
; aerosol
; agricultural waste
; air quality
; air sampler
; Article
; atmospheric transport
; biomass
; chemical composition
; China
; combustion
; meteorology
; mineral dust
; priority journal
; secondary organic aerosol
; troposphere
; China
; North China Plain
; Shandong
; Tai Shan
Scopus学科分类:
Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要:
To better understand the impact of agricultural waste burning on the air quality of free troposphere over the North China Plain (NCP), we collected total suspended particles (TSP) at the summit of Mt. Tai, located in the NCP using a high volume air sampler during 29 May to 28 June 2006, when the field burning of agricultural residue was intense. Temporal variations of all measured species showed that their concentration increases from late May to mid June (major BB period), peaking during 12–14 June, and then significantly decreased towards late June (minor BB period). We noticed that a significant reduction in the concentrations of carbonaceous aerosols during the period of 8–11 June, when the wind direction shifted from southerly to northerly. We found that concentrations of carbonaceous aerosols and some major ions showed several times higher during major BB period than those of minor BB period. We also found that nighttime concentrations are higher than daytime during major BB period, suggesting that a long-range atmospheric transport of biomass burning plumes in the free troposphere, which arrived at the summit of Mt. Tai. In contrast, daytime concentrations are higher than nighttime during minor BB period. We found higher concentrations of secondary organic carbon (SOC) during major BB period, suggesting that formation of secondary organic aerosols through aqueous phase chemistry under high NOxconditions during a long-range atmospheric transport. nss-K+showed about four times higher concentrations during major BB than those of minor BB. Concentrations of nss-Ca2+are higher in nighttime during major BB period, implying that a significant long-range atmospheric transport of mineral dust over the sampling site. These results are further supported by the positive matrix factorization (PMF) analysis, which showed that biomass burning was a major source for the carbonaceous aerosols followed by mineral dust sources over the summit of Mt. Tai. � 2017 Elsevier Ltd
Institute of Low Temperature Science, Hokkaido University, N19, W8, Kita-Ku, Sapporo, Japan; Chubu Institute for Advanced Studies, Chubu University, 1200 Motsumoto-cho, Kasugai, Japan; Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan; LAPC, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Boreddy S,K,R,et al. Temporal and diurnal variations of carbonaceous aerosols and major ions in biomass burning influenced aerosols over Mt. Tai in the North China Plain during MTX2006[J]. Atmospheric Environment,2017-01-01,154