10-Month characterization of the aerosol number size distribution and related air quality and meteorology at the Bondville, IL Midwestern background site
Aerosols
; Air quality
; Atmospheric aerosols
; Humidity control
; Meteorology
; Nucleation
; Optical properties
; Aerodynamic particle sizer
; Aerosol number size distribution
; Aerosol size distributions
; Bondville
; Number size distribution
; PM2.5
; Scanning mobility particle sizer
; Ultrafine particle
; Size distribution
; aerosol
; air quality
; concentration (composition)
; nucleation
; optical depth
; particle size
; particulate matter
; size distribution
; aerosol
; air quality
; Article
; biomass
; concentration (parameters)
; gas
; Illinois
; measurement
; meteorology
; particle size
; priority journal
; quality control
; solar radiation
; summer
; velocity
; winter
; Bondville
; Illinois
; United States
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:
The aerosol size distribution was measured at a rural continental U.S. location (Bondville, Illinois 40.05∘N and 88.37∘W) for the period July 2013–June 2014. The dehumidified size distribution in the range 3�nm to 2.5 μm was continuously recorded by two scanning mobility particle sizers and an aerodynamic particle sizer. The Illinois measurement site is significant because it is home to one of the longest records (20+�years) in North America of atmospheric aerosol, meteorology, and gas phase variables. It is a common site for model-measurement comparison of both chemical and aerosol microphysical variables. However, while the measurement record has aerosol number concentration and optical properties, the number size distribution has not been well-constrained. Measurement highlights include means in number concentration (3–2500�nm), aerosol optical depth, SO2, NH3, and PM2.5of 6500�cm−3, 0.18, 0.87�ppb, 1.6�ppb, and 8.8�μg�m−3, respectively. The mode in the mean size distribution was 31�nm (number) and 287�nm (volume). The mean size distribution was heavily influenced by nuclei mode particles, with 46% of particles smaller than 20�nm. New particle formation and growth events increase midday concentrations of 3–50�nm particles substantially, with the highest activity in spring months and lower activity in summer and winter. Short term elevations in particle number and mass associated with local agricultural burning in April are reported as well. � 2017 Elsevier Ltd
University of Iowa, Department of Chemical and Biochemical Engineering, United States; University of Iowa, IIHR Hydroscience and Engineering, United States; Illinois State Water Survey, Prairie Research Institute, University of Illinois at Urbana-Champaign, United States
Recommended Citation:
Bullard R,L,, Singh A,et al. 10-Month characterization of the aerosol number size distribution and related air quality and meteorology at the Bondville, IL Midwestern background site[J]. Atmospheric Environment,2017-01-01,154