Publications by authors named "Ashley R Russell"

Article Synopsis
  • Ground and space-based measurements show similar trends in NO(2) levels across four California metropolitan areas between 2005-2008.
  • Los Angeles experienced significant reductions in NO(2) levels, with a 46% drop on weekends and a yearly decrease of 9%, while other regions also saw declines, albeit at varying rates.
  • Satellite observations reveal detailed spatial patterns, indicating that weekend NO(2) concentrations decrease more sharply in certain areas, particularly in Los Angeles, and highlighting that air quality improvements in the San Joaquin Valley are less pronounced.
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Ionization air purifiers are increasingly used to remove aerosol particles from indoor air. However, certain ionization air purifiers also emit ozone. Reactions between the emitted ozone and unsaturated volatile organic compounds (VOC) commonly found in indoor air produce additional respirable aerosol particles in the ultrafine (<0.

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Secondary organic aerosol (SOA) particles are generated by reacting d-limonene vapor and ozone in a Teflon reaction chamber. The reaction is carried out in either dry or humid air in darkness. The resulting SOA particles are collected on glass fiber filters, and their photochemical properties are probed using a combination of UV photodissociation action spectroscopy and absorption spectroscopy techniques.

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