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Observations of Wildfire Volatile Organic Compound Emissions and Urban Ozone Precursors
Observations of Wildfire Volatile Organic Compound Emissions and Urban Ozone Precursors
Observations of Wildfire Volatile Organic Compound Emissions and Urban Ozone Precursors

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20260202105503
ISBN  
9798263325282
DDC  
620
저자명  
Mouat, Asher P.
서명/저자  
Observations of Wildfire Volatile Organic Compound Emissions and Urban Ozone Precursors
발행사항  
[Sl] : Georgia Institute of Technology, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
189 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-05, Section: A.
주기사항  
Advisor: Kaiser, Jennifer.
학위논문주기  
Thesis (Ph.D.)--Georgia Institute of Technology, 2024.
초록/해제  
요약Anthropogenic emissions have and continue to degrade air quality and alter chemical regimes in the atmosphere. Emissions of greenhouse gases have increased global temperatures, contributed to increasingly arid conditions, and exacerbated wildfire seasonal lengths and intensities. Wildfires emit a wide array of carcinogenic, highly reactive volatile organic compounds (VOCs). Urban emissions of oxides of nitrogen leads to the formation of secondary pollutants like ozone and organic aerosols. Prediction and mitigation of pollution events requires the understanding of complex VOC oxidation pathways. This work employs ground observations to further constrain VOC emissions from wildfires, assess the accuracy of ground-monitoring network HCHO measurements and determine temporal changes in urban HCHO concentrations, and evaluate the accuracy of satellite products when monitoring NO2 over airports.We use measurements from a proton transfer reaction time-of-flight mass spectrometer to develop emission factors (EFs) for 15 species for an understudied temperate forest biome in New South Wales, Australia. We conclude that EFs are applicable across geographically different but analogous biomes for modeling purposes. We then evaluate the precision and accuracy of three fast measurement, in-situ HCHO monitors and compare with observations from the TO-11A methodology at a photochemical assessment monitoring station in Atlanta. We find that TO-11A measurements are biased low, and that decreases in HCHO concentrations since 1999 are small. Finally, we use NO2 vertical profile measurements from a Pandora spectrometer and profile estimates from chemistry transport model to recalculate satellite retrievals. We find the recalculated quantities are biased low relative to independent ground observations.
일반주제명  
Volatile organic compounds--VOCs
일반주제명  
Pollutants
일반주제명  
Humidity
일반주제명  
Campaigns
일반주제명  
Ozone
일반주제명  
Emissions
일반주제명  
Seasons
일반주제명  
Aerosols
일반주제명  
Aviation
일반주제명  
Biomass
일반주제명  
Ecosystems
일반주제명  
Aircraft
일반주제명  
Greenhouse gases
일반주제명  
Oxidation
일반주제명  
Fourier transforms
일반주제명  
Phenols
일반주제명  
Forest & brush fires
일반주제명  
Satellites
일반주제명  
Aerospace engineering
일반주제명  
Climate change
일반주제명  
Forestry
일반주제명  
Mathematics
일반주제명  
Organic chemistry
일반주제명  
Transportation
기타저자  
Georgia Institute of Technology.
기본자료저록  
Dissertations Abstracts International. 87-05A.
전자적 위치 및 접속  
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MARC

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■035    ▼a(MiAaPQ)GeorgiaTech78546
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■0820  ▼a620
■1001  ▼aMouat,  Asher  P.
■24510▼aObservations  of  Wildfire  Volatile  Organic  Compound  Emissions  and  Urban  Ozone  Precursors
■260    ▼a[Sl]▼bGeorgia  Institute  of  Technology▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a189  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-05,  Section:  A.
■500    ▼aAdvisor:  Kaiser,  Jennifer.
■5021  ▼aThesis  (Ph.D.)--Georgia  Institute  of  Technology,  2024.
■520    ▼aAnthropogenic  emissions  have  and  continue  to  degrade  air  quality  and  alter  chemical  regimes  in  the  atmosphere.  Emissions  of  greenhouse  gases  have  increased  global  temperatures,  contributed  to  increasingly  arid  conditions,  and  exacerbated  wildfire  seasonal  lengths  and  intensities.  Wildfires  emit  a  wide  array  of  carcinogenic,  highly  reactive  volatile  organic  compounds  (VOCs).  Urban  emissions  of  oxides  of  nitrogen  leads  to  the  formation  of  secondary  pollutants  like  ozone  and  organic  aerosols.  Prediction  and  mitigation  of  pollution  events  requires  the  understanding  of  complex  VOC  oxidation  pathways.  This  work  employs  ground  observations  to  further  constrain  VOC  emissions  from  wildfires,  assess  the  accuracy  of  ground-monitoring  network  HCHO  measurements  and  determine  temporal  changes  in  urban  HCHO  concentrations,  and  evaluate  the  accuracy  of  satellite  products  when  monitoring  NO2  over  airports.We  use  measurements  from  a  proton  transfer  reaction  time-of-flight  mass  spectrometer  to  develop  emission  factors  (EFs)  for  15  species  for  an  understudied  temperate  forest  biome  in  New  South  Wales,  Australia.  We  conclude  that  EFs  are  applicable  across  geographically  different  but  analogous  biomes  for  modeling  purposes.  We  then  evaluate  the  precision  and  accuracy  of  three  fast  measurement,  in-situ  HCHO  monitors  and  compare  with  observations  from  the  TO-11A  methodology  at  a  photochemical  assessment  monitoring  station  in  Atlanta.  We  find  that  TO-11A  measurements  are  biased  low,  and  that  decreases  in  HCHO  concentrations  since  1999  are  small.  Finally,  we  use  NO2  vertical  profile  measurements  from  a  Pandora  spectrometer  and  profile  estimates  from  chemistry  transport  model  to  recalculate  satellite  retrievals.  We  find  the  recalculated  quantities  are  biased  low  relative  to  independent  ground  observations.
■590    ▼aSchool  code:  0078.
■650  4▼aVolatile  organic  compounds--VOCs
■650  4▼aPollutants
■650  4▼aHumidity
■650  4▼aCampaigns
■650  4▼aOzone
■650  4▼aEmissions
■650  4▼aSeasons
■650  4▼aAerosols
■650  4▼aAviation
■650  4▼aBiomass
■650  4▼aEcosystems
■650  4▼aAircraft
■650  4▼aGreenhouse  gases
■650  4▼aOxidation
■650  4▼aFourier  transforms
■650  4▼aPhenols
■650  4▼aForest  &  brush  fires
■650  4▼aSatellites
■650  4▼aAerospace  engineering
■650  4▼aClimate  change
■650  4▼aForestry
■650  4▼aMathematics
■650  4▼aOrganic  chemistry
■650  4▼aTransportation
■690    ▼a0538
■690    ▼a0404
■690    ▼a0478
■690    ▼a0405
■690    ▼a0490
■690    ▼a0709
■71020▼aGeorgia  Institute  of  Technology.
■7730  ▼tDissertations  Abstracts  International▼g87-05A.
■790    ▼a0078
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360299▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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