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Full-Text Articles in Engineering
Evaluation Of Nitrous Acid Sources And Sinks In Urban Outflow, Elliott T. Gall, Robert J. Griffin, Allison L. Steiner, Jack Dibb, Eric Scheuer, Longwen Gong, Andrew P. Rutter, Basak K. Cevik, Saewung Kim, Barry Lefer, James Flynn
Evaluation Of Nitrous Acid Sources And Sinks In Urban Outflow, Elliott T. Gall, Robert J. Griffin, Allison L. Steiner, Jack Dibb, Eric Scheuer, Longwen Gong, Andrew P. Rutter, Basak K. Cevik, Saewung Kim, Barry Lefer, James Flynn
Mechanical and Materials Engineering Faculty Publications and Presentations
Intensive air quality measurements made from June 22–25, 2011 in the outflow of the Dallas–Fort Worth (DFW) metropolitan area are used to evaluate nitrous acid (HONO) sources and sinks. A two-layer box model was developed to assess the ability of established and recently identified HONO sources and sinks to reproduce observations of HONO mixing ratios. A baseline model scenario includes sources and sinks established in the literature and is compared to scenarios including three recently identified sources: volatile organic compound-mediated conversion of nitric acid to HONO (S1), biotic emission from the ground (S2), and re-emission from a surface nitrite reservoir …
Comparative Estimates Of Anthropogenic Heat Emission In Relation To Surface Energy Balance Of A Subtropical Urban Neighborhood, Changhyoun Park, Gunnar W. Schade, Nicholas D. Werner, David J. Sailor, Cheolhee Kim
Comparative Estimates Of Anthropogenic Heat Emission In Relation To Surface Energy Balance Of A Subtropical Urban Neighborhood, Changhyoun Park, Gunnar W. Schade, Nicholas D. Werner, David J. Sailor, Cheolhee Kim
Mechanical and Materials Engineering Faculty Publications and Presentations
Long-term eddy covariance measurements have been conducted in a subtropical urban area, an older neighborhood north of downtown Houston. The measured net radiation (Q*), sensible heat flux (H) and latent heat flux (LE) showed typical seasonal diurnal variations in urban areas: highest in summer; lowest in winter. From an analysis of a subset of the first two years of measurements, we find that approximately 42% of Q* is converted into H, and 22% into LE during daytime. The local anthropogenic heat emissions were estimated conventionally using the long-term residual method and the heat emission inventory approach. We also …