Space-Time Prediction of PM2.5 Concentrations in Santiago de Chile Using LSTM Networks

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dc.contributor.authorPeralta, Billy
dc.contributor.authorSepúlveda, Tomás
dc.contributor.authorNicolis, Orietta
dc.contributor.authorCaro, Luis
dc.date.accessioned2023-05-31T16:09:54Z
dc.date.available2023-05-31T16:09:54Z
dc.date.issued2022-11
dc.descriptionIndexación: Scopus.es
dc.description.abstractCurrently, air pollution is a highly important issue in society due to its harmful effects on human health and the environment. The prediction of pollutant concentrations in Santiago de Chile is typically based on statistical methods or classical neural networks. Existing methods often assume that historical values are known at a fixed geographic point, such that air pollution can be predicted at a future hour using time series analysis. However, these methods are inapplicable when it is necessary to know the pollutant concentrations at every point of the space. This work proposes a method that addresses the space-time prediction of PM (Formula presented.) concentration in Santiago de Chile at any spatial points through the use of the LSTM recurrent network model. In particular, by considering historical values of air pollutants (PM (Formula presented.), PM (Formula presented.) and nitrogen dioxide) and meteorological variables (temperature, wind speed and direction and relative humidity), measured at fixed monitoring stations, the proposed model can predict PM (Formula presented.) concentrations for the next 24 h in a new location where measurements are not available. This work describes the experiments carried out, with particular emphasis on the pre-processing step, which constitutes an important factor for obtaining relatively good results. The proposed multilayer LSTM model obtained (Formula presented.) values equal to 0.74 and 0.38 in seven stations when considering forecasts of 1 and 24 h, respectively. As future work, we plan to include more input variables in the proposed model and to use attention-based networks. © 2022 by the authors.es
dc.description.urihttps://www.mdpi.com/2076-3417/12/22/11317
dc.identifier.citationApplied Sciences (Switzerland, Volume 12, Issue 22, November 2022, Article number 11317es
dc.identifier.doi10.3390/app122211317
dc.identifier.issn2076-3417
dc.identifier.urihttps://repositorio.unab.cl/xmlui/handle/ria/50172
dc.language.isoenes
dc.publisherMDPIes
dc.rights.licenseAtribución 4.0 Internacional (CC BY 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/deed.es
dc.subjectPM2.5es
dc.subjectPollution modeles
dc.subjectRecurrent neural networkses
dc.subjectSpace-time predictiones
dc.titleSpace-Time Prediction of PM2.5 Concentrations in Santiago de Chile Using LSTM Networkses
dc.typeArtículoes
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