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  • Kim, S. W.University of Colorado at Boulder,National Oceanic and Atmospheric Administration (författare)

Evaluations of NOx and highly reactive VOC emission inventories in Texas and their implications for ozone plume simulations during the Texas Air Quality Study 2006

  • Artikel/kapitelEngelska2011

Förlag, utgivningsår, omfång ...

  • 2011-11-16
  • Copernicus GmbH,2011
  • electronicrdacarrier

Nummerbeteckningar

  • LIBRIS-ID:oai:research.chalmers.se:5643c173-d0fe-45c6-b336-998623b63901
  • https://research.chalmers.se/publication/156532URI
  • https://doi.org/10.5194/acp-11-11361-2011DOI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:art swepub-publicationtype
  • Ämneskategori:ref swepub-contenttype

Anmärkningar

  • Satellite and aircraft observations made during the 2006 Texas Air Quality Study (TexAQS) detected strong urban, industrial and power plant plumes in Texas. We simulated these plumes using the Weather Research and Forecasting-Chemistry (WRF-Chem) model with input from the US EPA's 2005 National Emission Inventory (NEI-2005), in order to evaluate emissions of nitrogen oxides (NOx = NO + NO2) and volatile organic compounds (VOCs) in the cities of Houston and Dallas-FortWorth. We compared the model results with satellite retrievals of tropospheric nitrogen dioxide (NO2) columns and airborne in-situ observations of several trace gases including NOx and a number of VOCs. The model and satellite NO2 columns agree well for regions with large power plants and for urban areas that are dominated by mobile sources, such as Dallas. How-ever, in Houston, where significant mobile, industrial, and inport marine vessel sources contribute to NOx emissions, the model NO2 columns are approximately 50 %-70 % higher than the satellite columns. Similar conclusions are drawn from comparisons of the model results with the TexAQS 2006 aircraft observations in Dallas and Houston. For Dallas plumes, the model-simulated NO2 showed good agreement with the aircraft observations. In contrast, the model-simulated NO2 is similar to 60 % higher than the aircraft observations in the Houston plumes. Further analysis indicates that the NEI-2005 NOx emissions over the Houston Ship Channel area are overestimated while the urban Houston NOx emissions are reasonably represented. The comparisons of model and aircraft observations confirm that highly reactive VOC emissions originating from industrial sources in Houston are underestimated in NEI-2005. The update of VOC emissions based on Solar Occultation Flux measurements during the field campaign leads to improved model simulations of ethylene, propylene, and formaldehyde. Reducing NOx emissions in the Houston Ship Channel and increasing highly reactive VOC emissions from the point sources in Houston improve the model's capability of simulating ozone (O-3) plumes observed by the NOAA WP-3D aircraft, although the deficiencies in the model O-3 simulations indicate that many challenges remain for a full understanding of the O-3 formation mechanisms in Houston.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • McKeen, S. A.University of Colorado at Boulder,National Oceanic and Atmospheric Administration (författare)
  • Frost, G. J.National Oceanic and Atmospheric Administration,University of Colorado at Boulder (författare)
  • Lee, S. H.National Oceanic and Atmospheric Administration,University of Colorado at Boulder (författare)
  • Trainer, M.National Oceanic and Atmospheric Administration (författare)
  • Richter, A.Universität Bremen (författare)
  • Angevine, W. M.National Oceanic and Atmospheric Administration,University of Colorado at Boulder (författare)
  • Atlas, E.University of Miami (författare)
  • Bianco, L.National Oceanic and Atmospheric Administration,University of Colorado at Boulder (författare)
  • Boersma, K. F.Technische Universiteit Eindhoven,Eindhoven University of Technology,Royal Netherlands Meteorological Institute (författare)
  • Brioude, J.University of Colorado at Boulder,National Oceanic and Atmospheric Administration (författare)
  • Burrows, J. P.UK Centre For Ecology & Hydrology (UKCEH),Universität Bremen (författare)
  • De Gouw, J. A.University of Colorado at Boulder,National Oceanic and Atmospheric Administration (författare)
  • Fried, A.National Center for Atmospheric Research (författare)
  • Gleason, J.NASA Goddard Space Flight Center (författare)
  • Hilboll, A.Universität Bremen (författare)
  • Mellqvist, Johan,1965Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)jome (författare)
  • Peischl, J.University of Colorado at Boulder,National Oceanic and Atmospheric Administration (författare)
  • Richter, D.National Center for Atmospheric Research (författare)
  • Rivera, Claudia,1976Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)vm2ricl (författare)
  • Ryerson, T. B.National Oceanic and Atmospheric Administration (författare)
  • Hekkert, S. T. L. (författare)
  • Walega, J. G.National Center for Atmospheric Research (författare)
  • Warneke, C.National Oceanic and Atmospheric Administration,University of Colorado at Boulder (författare)
  • Weibring, P.National Center for Atmospheric Research (författare)
  • Williams, E.National Oceanic and Atmospheric Administration,University of Colorado at Boulder (författare)
  • University of Colorado at BoulderNational Oceanic and Atmospheric Administration (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Atmospheric Chemistry and Physics: Copernicus GmbH11:22, s. 11361-113861680-73161680-7324

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