FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2942134920> ?p ?o ?g. }

• W2942134920 abstract "Author(s): Enayati Ahangar, Faraz | Advisor(s): Venkatram, Akula | Abstract: Dispersion models play an essential role in understanding the impact of pollutant emissions on air quality. Once their results have been evaluated with observations, they are used by regulatory agencies and planning bodies to permit new sources and develop policies to mitigate the impact of emissions on air quality. In my research, I developed and applied a class of dispersion models referred to as semi-empirical models whose formulation depends on representing some of the governing processes with parameters whose values are obtained by fitting model estimates to corresponding observations. In recent years, roadway design is suggested as a potential strategy to mitigate the impact of vehicular emissions on near-road air quality. In my research, I developed a dispersion model to estimate the impact of a solid noise barrier upwind of a highway on concentrations downwind of the road. The results showed that an upwind barrier reduces the downwind concentration by enhancing turbulence and shifting the emissions upwind through the action of the recirculating zone formed behind the upwind barrier. I also propose a tentative model to estimate on-road concentrations within the recirculation zone.. The applicability of the downwind barrier dispersion models to real-world measurements was also explored in my research. First, a field study was conducted to measure ultra-fine particles (UFP) concentration and micrometeorology data near a roadside barrier in Riverside, California. Two models for downwind barriers were evaluated with data collected and emission factors were estimated for the fleet. The primary effect of a downwind barrier was equivalent to shifting the line sources on the road upwind by a distance of about HU(H/2)/u*.Next, UFP concentrations were measured downwind of a solid barrier and a solid barrier with vegetation simultaneously to estimate the incremental effect of tall vegetation on the mitigation caused by a solid barrier. The vegetation above the solid barrier reduced turbulence levels of the air passing through it and added to the concentration reduction induced by the solid barrier most of the time; however, this was not the case for all of the observed data. I then apply dispersion models at regional scales by interpreting PM_2.5 concentrations measured by a network of 40 low-cost monitors located in the Imperial Valley of southern California. This valley is bordered by deserts on the east and the west, the Salton Sea on the North, and Mexico to the South. Particulate matter can be transport into the valley from across these borders, and be generated from within the valley itself because of agricultural activity. These borders are represented by line sources and the valley by an area source. I estimate the emissions from these sources by fitting model estimates to daily and annually averaged measurements made at 40 monitors. Once these emissions are determined, I use them as inputs in the dispersion model to construct PM2.5 maps at a much finer resolution than that provided by the monitors." @default.
• W2942134920 created "2019-05-03" @default.
• W2942134920 creator A5025974468 @default.
• W2942134920 date "2018-01-01" @default.
• W2942134920 modified "2023-09-23" @default.
• W2942134920 title "The Development and Application of Semi-Empirical Dispersion Models: Impact of Roadside Structures, Identifying Emission Sources, and Producing Concentration Maps at Different Temporal and Spatial Scales" @default.
• W2942134920 hasPublicationYear "2018" @default.
• W2942134920 type Work @default.
• W2942134920 sameAs 2942134920 @default.
• W2942134920 citedByCount "0" @default.
• W2942134920 crossrefType "journal-article" @default.
• W2942134920 hasAuthorship W2942134920A5025974468 @default.
• W2942134920 hasConcept C106982986 @default.
• W2942134920 hasConcept C120665830 @default.
• W2942134920 hasConcept C121332964 @default.
• W2942134920 hasConcept C126314574 @default.
• W2942134920 hasConcept C127313418 @default.
• W2942134920 hasConcept C127413603 @default.
• W2942134920 hasConcept C133199616 @default.
• W2942134920 hasConcept C153294291 @default.
• W2942134920 hasConcept C154945302 @default.
• W2942134920 hasConcept C163294075 @default.
• W2942134920 hasConcept C177562468 @default.
• W2942134920 hasConcept C178790620 @default.
• W2942134920 hasConcept C185592680 @default.
• W2942134920 hasConcept C189764856 @default.
• W2942134920 hasConcept C205649164 @default.
• W2942134920 hasConcept C39432304 @default.
• W2942134920 hasConcept C41008148 @default.
• W2942134920 hasConcept C44154836 @default.
• W2942134920 hasConcept C559116025 @default.
• W2942134920 hasConcept C82685317 @default.
• W2942134920 hasConcept C91586092 @default.
• W2942134920 hasConceptScore W2942134920C106982986 @default.
• W2942134920 hasConceptScore W2942134920C120665830 @default.
• W2942134920 hasConceptScore W2942134920C121332964 @default.
• W2942134920 hasConceptScore W2942134920C126314574 @default.
• W2942134920 hasConceptScore W2942134920C127313418 @default.
• W2942134920 hasConceptScore W2942134920C127413603 @default.
• W2942134920 hasConceptScore W2942134920C133199616 @default.
• W2942134920 hasConceptScore W2942134920C153294291 @default.
• W2942134920 hasConceptScore W2942134920C154945302 @default.
• W2942134920 hasConceptScore W2942134920C163294075 @default.
• W2942134920 hasConceptScore W2942134920C177562468 @default.
• W2942134920 hasConceptScore W2942134920C178790620 @default.
• W2942134920 hasConceptScore W2942134920C185592680 @default.
• W2942134920 hasConceptScore W2942134920C189764856 @default.
• W2942134920 hasConceptScore W2942134920C205649164 @default.
• W2942134920 hasConceptScore W2942134920C39432304 @default.
• W2942134920 hasConceptScore W2942134920C41008148 @default.
• W2942134920 hasConceptScore W2942134920C44154836 @default.
• W2942134920 hasConceptScore W2942134920C559116025 @default.
• W2942134920 hasConceptScore W2942134920C82685317 @default.
• W2942134920 hasConceptScore W2942134920C91586092 @default.
• W2942134920 hasLocation W29421349201 @default.
• W2942134920 hasOpenAccess W2942134920 @default.
• W2942134920 hasPrimaryLocation W29421349201 @default.
• W2942134920 hasRelatedWork W2032518937 @default.
• W2942134920 hasRelatedWork W2075968181 @default.
• W2942134920 hasRelatedWork W2090414483 @default.
• W2942134920 hasRelatedWork W2115545391 @default.
• W2942134920 hasRelatedWork W2130694361 @default.
• W2942134920 hasRelatedWork W2324442653 @default.
• W2942134920 hasRelatedWork W2341634746 @default.
• W2942134920 hasRelatedWork W2346257548 @default.
• W2942134920 hasRelatedWork W2469055532 @default.
• W2942134920 hasRelatedWork W2511662866 @default.
• W2942134920 hasRelatedWork W2569727005 @default.
• W2942134920 hasRelatedWork W2583489610 @default.
• W2942134920 hasRelatedWork W2744559734 @default.
• W2942134920 hasRelatedWork W2752053652 @default.
• W2942134920 hasRelatedWork W2759025153 @default.
• W2942134920 hasRelatedWork W2811328144 @default.
• W2942134920 hasRelatedWork W2897176658 @default.
• W2942134920 hasRelatedWork W2918027842 @default.
• W2942134920 hasRelatedWork W3006198487 @default.
• W2942134920 hasRelatedWork W3135375636 @default.
• W2942134920 isParatext "false" @default.
• W2942134920 isRetracted "false" @default.
• W2942134920 magId "2942134920" @default.
• W2942134920 workType "article" @default.