Air quality forecasts at kilometer scale grid over Spanish complex terrains

The Caliope Air Quality Forecast System (CALIOPE-AQFS) represents the current state of the art in air quality forecasting systems of high-resolution running on high-performance computing platforms. It provides a 48 h forecast of NO2, O3, SO2, PM10, PM2.5, CO, and C6H6 at a 4 km horizontal resolution...

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Autores: Pay Pérez, María Teresa, Martínez, F., Guevara, M., Baldasano Recio, José M. (José María)
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2014
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/98904
Acceso en línea:https://hdl.handle.net/2445/98904
Access Level:acceso abierto
Palabra clave:Qualitat de l'aire
Espanya
Air quality
Spain
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spelling Air quality forecasts at kilometer scale grid over Spanish complex terrainsPay Pérez, María TeresaMartínez, F.Guevara, M.Baldasano Recio, José M. (José María)Qualitat de l'aireEspanyaAir qualitySpainThe Caliope Air Quality Forecast System (CALIOPE-AQFS) represents the current state of the art in air quality forecasting systems of high-resolution running on high-performance computing platforms. It provides a 48 h forecast of NO2, O3, SO2, PM10, PM2.5, CO, and C6H6 at a 4 km horizontal resolution over all of Spain, and at a 1 km horizontal resolution over the most populated areas in Spain with complex terrains (the Barcelona (BCN), Madrid (MAD) and Andalusia (AND) domains). Increased horizontal resolution from 4 to 1 km over the aforementioned domains leads to finer textures and more realistic concentration maps, which is justified by the increase in NO2/O3 spatial correlation coefficients from 0.79/0.69 (4 km) to 0.81/0.73 (1 km). High-resolution emissions using the bottom-up HERMESv2.0 model are essential for improving model performance when increasing resolution on an urban scale, but it is still insufficient. Decreasing grid spacing does not reveal the expected improvement in hourly statistics, i.e., decreasing NO2 bias by only ~ 2 μg m−3 and increasing O3 bias by ~ 1 μg m−3. The grid effect is less pronounced for PM10, because part of its mass consists of secondary aerosols, which are less affected than the locally emitted primary components by a decreasing grid size. The resolution increase has the highest impact over Barcelona, where air flow is controlled mainly by mesoscale phenomena and a lower planetary boundary layer (PBL). Despite the merits and potential uses of the 1-km simulation, the limitations of current model formulations do not allow confirmation of their expected superiority close to highly urbanized areas and large emissions sources. Future work should combine high grid resolutions with techniques that decrease subgrid variability (e.g., stochastic field methods), and also include models that consider urban morphology and thermal parameters.European Geosciences Union (EGU)2014info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/98904Articles publicats en revistes (Genètica, Microbiologia i Estadística)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: http://dx.doi.org/10.5194/gmd-7-1979-2014Geoscientific Model Development, 2014, vol. 7, p. 1979-1999http://dx.doi.org/10.5194/gmd-7-1979-2014cc-by (c) Pay Pérez, María Teresa et al., 2014http://creativecommons.org/licenses/by/3.0/esinfo:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/989042026-05-27T06:46:51Z
dc.title.none.fl_str_mv Air quality forecasts at kilometer scale grid over Spanish complex terrains
title Air quality forecasts at kilometer scale grid over Spanish complex terrains
spellingShingle Air quality forecasts at kilometer scale grid over Spanish complex terrains
Pay Pérez, María Teresa
Qualitat de l'aire
Espanya
Air quality
Spain
title_short Air quality forecasts at kilometer scale grid over Spanish complex terrains
title_full Air quality forecasts at kilometer scale grid over Spanish complex terrains
title_fullStr Air quality forecasts at kilometer scale grid over Spanish complex terrains
title_full_unstemmed Air quality forecasts at kilometer scale grid over Spanish complex terrains
title_sort Air quality forecasts at kilometer scale grid over Spanish complex terrains
dc.creator.none.fl_str_mv Pay Pérez, María Teresa
Martínez, F.
Guevara, M.
Baldasano Recio, José M. (José María)
author Pay Pérez, María Teresa
author_facet Pay Pérez, María Teresa
Martínez, F.
Guevara, M.
Baldasano Recio, José M. (José María)
author_role author
author2 Martínez, F.
Guevara, M.
Baldasano Recio, José M. (José María)
author2_role author
author
author
dc.subject.none.fl_str_mv Qualitat de l'aire
Espanya
Air quality
Spain
topic Qualitat de l'aire
Espanya
Air quality
Spain
description The Caliope Air Quality Forecast System (CALIOPE-AQFS) represents the current state of the art in air quality forecasting systems of high-resolution running on high-performance computing platforms. It provides a 48 h forecast of NO2, O3, SO2, PM10, PM2.5, CO, and C6H6 at a 4 km horizontal resolution over all of Spain, and at a 1 km horizontal resolution over the most populated areas in Spain with complex terrains (the Barcelona (BCN), Madrid (MAD) and Andalusia (AND) domains). Increased horizontal resolution from 4 to 1 km over the aforementioned domains leads to finer textures and more realistic concentration maps, which is justified by the increase in NO2/O3 spatial correlation coefficients from 0.79/0.69 (4 km) to 0.81/0.73 (1 km). High-resolution emissions using the bottom-up HERMESv2.0 model are essential for improving model performance when increasing resolution on an urban scale, but it is still insufficient. Decreasing grid spacing does not reveal the expected improvement in hourly statistics, i.e., decreasing NO2 bias by only ~ 2 μg m−3 and increasing O3 bias by ~ 1 μg m−3. The grid effect is less pronounced for PM10, because part of its mass consists of secondary aerosols, which are less affected than the locally emitted primary components by a decreasing grid size. The resolution increase has the highest impact over Barcelona, where air flow is controlled mainly by mesoscale phenomena and a lower planetary boundary layer (PBL). Despite the merits and potential uses of the 1-km simulation, the limitations of current model formulations do not allow confirmation of their expected superiority close to highly urbanized areas and large emissions sources. Future work should combine high grid resolutions with techniques that decrease subgrid variability (e.g., stochastic field methods), and also include models that consider urban morphology and thermal parameters.
publishDate 2014
dc.date.none.fl_str_mv 2014
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/98904
url https://hdl.handle.net/2445/98904
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: http://dx.doi.org/10.5194/gmd-7-1979-2014
Geoscientific Model Development, 2014, vol. 7, p. 1979-1999
http://dx.doi.org/10.5194/gmd-7-1979-2014
dc.rights.none.fl_str_mv cc-by (c) Pay Pérez, María Teresa et al., 2014
http://creativecommons.org/licenses/by/3.0/es
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by (c) Pay Pérez, María Teresa et al., 2014
http://creativecommons.org/licenses/by/3.0/es
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv European Geosciences Union (EGU)
publisher.none.fl_str_mv European Geosciences Union (EGU)
dc.source.none.fl_str_mv Articles publicats en revistes (Genètica, Microbiologia i Estadística)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.301629

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