EVENTS

Our Work

Development of a Neighborhood Scale Model for Ambient Exposure to Air Toxics

HARC's Dr. Eduardo (Jay) Olaguer of HARC developed a microscale 3D Eulerian air quality model for the interpretation of real-time monitoring data collected during the Benzene and other Toxics Exposure (BEE-TEX) field study. The accompanying figure shows a benzene plume (contour labels in units of parts per billion by volume) in Galena Park, Texas as reconstructed by the HARC model based on mobile laboratory measurements during BEE-TEX.

The HARC model was coded in MATLAB and optimized for a parallel processing workstation equipped with a Graphics Processing Unit. The model was tested with data from prior field studies, including the 2006 Second Texas Air Quality Study (TexAQS II) and the 2009 Study of Houston Atmospheric Radical Precursors (SHARP), as well as routine data from regulatory monitoring stations in Houston. Several peer-reviewed publications resulted from the model development effort, as listed in the references below. The model development was funded by the U.S. Fish and Wildlife Service under the Coastal Impact Assistance Program.

References:

E. P. Olaguer, 2011; “Adjoint Model Enhanced Plume Reconstruction from Tomographic Remote Sensing Measurements,” Atmos. Environ., vol. 45, 6980-6986, doi:10.1016/j.atmosenv.2011.09.020.

E. P. Olaguer, 2012; “The Potential Near Source Ozone Impacts of Upstream Oil and Gas Industry Emissions,” J. Air and Waste Management Assoc., vol. 62, 966-977.

E. P. Olaguer, 2012; “Near Source Air Quality Impacts of Large Olefin Flares,” J. Air and Waste Management Assoc., vol. 62, 978-988.

E. P. Olaguer, 2013; “Response to Comments by the Texas Commission on Environmental Quality regarding ‘The Potential Near Source Ozone Impacts of Upstream Oil and Gas Industry Emissions’,” J. Air and Waste Management Assoc., vol. 63, 127-128.

E. P. Olaguer, 2013; “Application of an Adjoint Neighborhood Scale Chemistry Transport Model to the Attribution of Primary Formaldehyde at Lynchburg Ferry during TexAQS II,” J. Geophys. Res. Atmos., vol. 118, 4936–4946.

B. Buzcu Guven, E. P. Olaguer, S. C. Herndon, C. E. Kolb, W. B. Knighton, and A. E. Cuclis, 2013; “Identification of the Source of Benzene Concentrations at Texas City during SHARP Using an Adjoint Neighborhood Scale Transport Model and a Receptor Model,” J. Geophys. Res. Atmos., vol. 118, 8023–8031.

E. P. Olaguer, S. C. Herndon, B. Buzcu Guven, C. E. Kolb, M. J. Brown, and A. E. Cuclis, 2013; “Attribution of Primary Formaldehyde and Sulfur Dioxide at Texas City during SHARP/ Formaldehyde and Olefins from Large Industrial Releases (FLAIR) Using an Adjoint Chemistry Transport Model ,” J. Geophys. Res. Atmos., vol. 118, 11,317–11,326.

E. P. Olaguer, M.H. Erickson, A. Wijesinghe, and B.S. Neish, 2016; “Source Attribution and Quantification of Benzene Event Emissions in a Houston Ship Channel Community Based on Real Time Mobile Monitoring of Ambient Air,” J. Air and Waste Management Assoc., vol. 66, 164-172.


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HARC's Alex Cuclis wrote an article, "How expensive is bad science", for The Cynthia & George Mitchell Foundation. Alex elaborates on creating cost-effective ozone control strategies.

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