KORUS-AQ hydrogen oxides chemistry of diverse tropospheric environments

Open Access
Brosius, Alexandra Leontire
Graduate Program:
Master of Science
Document Type:
Master Thesis
Date of Defense:
June 18, 2018
Committee Members:
  • William Henry Brune, Thesis Advisor
  • Matthew Robert Kumjian, Committee Member
  • Gregory S Jenkins, Committee Member
  • Atmospheric oxidation
  • HOx chemistry
  • ozone
  • air quality
  • field work
  • atmospheric science
  • pollution
  • aircraft campaign
  • Korea
  • troposphere
The Korea-United States Air Quality Study (KORUS-AQ) took place in 2016 to address the need to better understand Korea’s poor air quality and better understand the pollution in rapidly changing East Asian megacities. The KORUS-AQ campaign involved ground-based, satellite, and airborne observations. This work focuses on aircraft observations and subsequent simulations of two important atmospheric oxidants, hydroxyl and hydroperoxyl. The KORUS-AQ airborne chemistry objectives included measuring 1) pollutant and pollutant precursor concentrations across city to urban environments, 2) pollutant inflow and outflow over the Korean Peninsula, and 3) vertical concentration profiles over urban, industrial, and remote areas. Within the context of the KORUS-AQ airborne science objectives, this study highlights the connections between gas phase chemistry of hydroxyl and hydroperoxyl, gas-to-particle loss of hydroperoxyl, and the gas phase behavior of several pollutants that directly affect Korea’s air quality.