rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Observations of secondary organic aerosol production and soot aging under atmospheric conditions using a novel environmental aerosol chamber
  name:
    name part: Glen, Crystal.
    role:
      role term: creator
  name:
    name part: Collins, Donald R.
    role:
      role term: thesis advisor.
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: txu
    date issued: 2012
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: remote
    extent: 1 online resource.
  abstract: Secondary organic aerosols (SOA) comprise a substantial fraction of the total global aerosol budget. While laboratory studies involving smog chambers have advanced our understanding of the formation mechanisms responsible for SOA, our knowledge of the processes leading to SOA production under ambient gaseous and particulate concentrations as well as the impact these aerosol types have on climate is poorly understood. Although the majority of atmospheric aerosols scatter radiation either directly or indirectly by serving as cloud condensation nuclei, soot is thought to have a significant warming effect through absorption. Like inorganic salts, soot may undergo atmospheric transformation through the vapor condensation of non-volatile gaseous species which will alter both its chemical and physical properties. Typical smog chamber studies investigating the formation and growth of SOA as well as the soot aging process are temporally limited by the initial gaseous concentrations injected into the chamber environment. Furthermore, data interpretation from such experiments is generally restricted to the singular gaseous species under investigation. This dissertation discusses the use of a new aerosol chamber designed to study the formation and growth of SOA and soot aging under atmospherically relevant conditions. The Ambient Aerosol Chamber for Evolution Studies (AACES) was deployed at three field sites where size and hygroscopic growth factor (HGF) of ammonium sulfate seed particles was monitored over time to examine the formation and growth of SOA. Similar studies investigating the soot aging process were also conducted in Houston, TX. It is shown that during the ambient growth of ammonium sulfate seed particles, as particle size increases, hygroscopic growth factors decrease considerably resulting in a significant organic mass fraction in the particle phase concluding an experiment. Observations of soot aging show an increase in measured size, HGF, mass and single scatt…
  note: by Crystal Chanea Glen.
  note: "Major Subject: Atmospheric Sciences"
  note: Electronic resource.
  note: Doctor of Philosophy Texas A&M University 2010 http://hdl.handle.net/1969.1/ETD-TAMU-2010-12-8837
  note: Includes bibliographical references.
  note: Text (Dissertation)
  subject:
    topic: Major atmospheric sciences
  subject:
    topic: Optical Measurements
  subject:
    topic: Soot
  subject:
    topic: Aerosol
  subject:
    topic: Environmental Chamber
  subject:
    topic: Climate
  subject:
    topic: Secondary Organic Aerosol
  subject:
    topic: Aerosol Aging
  identifier: http://hdl.handle.net/1969.1/ETD-TAMU-2010-12-8837
  record info:
    record content source: TXA
    record creation date: 120301
    record change date: 20151202151524.0
    record identifier: in00002742189