Application of MM5/CALMET/CAMx in Santiago, Chile

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dc.catalogadorgjm
dc.contributor.authorJorquera, Héctor
dc.contributor.authorCastro, Julio
dc.contributor.authorEscobar, Jaime
dc.contributor.authorJakobs, Hermann
dc.date.accessioned2024-05-30T16:23:20Z
dc.date.available2024-05-30T16:23:20Z
dc.date.issued2003
dc.description.abstractThe Comprehensive Air Quality Model with Extensions (CAMx) has been applied to two summer photochemical episodes in the greater metro area of Santiago, Chile. It is shown that the CAMx model predicts reasonably well the spatial gradients of gaseous pollutants and the weekly cycle of variation for CO and NOx. The emission estimates for CO seem to be quite on agreement with actual emissions in 2000. NOx emissions are more appropriate for the 1998 scenario, whereas for 2000 they seem to overestimate actual emissions, so the mobile sources emission factors need to be verified. The SO2 simulations indicate that there relevant sources not accounted for in the inventory. There are problems with the VOC emissions for the area sources, because the model predictions for ozone are quite below what is being observed, for all network stations in 1998, a scenario with reliable NOx simulated levels. For the 2000 scenario, this problem is worsened because of excessive ozone scavenging. When we use the results of a comprehensive VOC campaign to produce a synthetic VOC profile of emissions for the whole city, simulated ozone gets closer to ambient measurements for the 1998 scenario. For the 2000 scenario, the overestimation in the simulated NOx levels is large enough to prevent any significant ozone sensitivity with respect to VOC increases. All things considered, CAMx has passed the "proof of the concept" for studying photochemical episodes at Santiago, Chile. The major sources of uncertainty are the emission inventory estimates for NOx and VOC. As a second source of uncertainty, meteorology was not properly represented on the second half of the January 1998 episode, and there are some problems with the stations closer to the Andes foothills overnight, particularly regarding ozone nocturnal profiles, that deserve further research.
dc.fuente.origenORCID
dc.identifier.urihttp://www.scopus.com/inward/record.url?eid=2-s2.0-19944387330&partnerID=MN8TOARS
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/86057
dc.information.autorucEscuela de Ingeniería; Jorquera, Héctor; 0000-0002-7462-7901; 100302
dc.language.isoen
dc.nota.accesosin adjunto
dc.pagina.final419
dc.pagina.inicio399
dc.relation.ispartofGuideline on Air Quality Models: The Path Forward
dc.rightsregistro bibliográfico
dc.subjectAir quality levels
dc.subjectDry deposition
dc.subjectNocturnals
dc.subjectPollutants
dc.subject.ddc600
dc.subject.deweyTecnologíaes_ES
dc.subject.ods11 Sustainable cities and communities
dc.subject.ods13 Climate action
dc.subject.odspa11 Ciudades y comunidades sostenibles
dc.subject.odspa13 Acción por el clima
dc.titleApplication of MM5/CALMET/CAMx in Santiago, Chile
dc.typecomunicación de congreso
sipa.codpersvinculados100302
sipa.trazabilidadORCID;2024-05-27
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