RT journal article T1 Spatial and meteorological relevance in NO2 estimations: a case study in the Bay of Algeciras (Spain) A1 González Enrique, Francisco Javier A1 Turias Domínguez, Ignacio José A1 Ruiz Águilar, Juan Jesús A1 Moscoso López, José Antonio A1 Franco, Leonardo A2 Ingeniería Industrial e Ingeniería Civil A2 Ingeniería Informática K1 Artificial neural networks K1 Monitoring networks K1 Air pollution K1 Feature relevance AB This study focuses on how to determine the most relevant variables in order to estimate the hourly NO2 concentrations in a monitoring network located in the Bay of Algeciras (Spain). For each station of the network, artificial neural networks and multiple linear regression have been used to compute hourly estimation models. Meteorological variables and hourly NO2 concentrations from the nearby stations have been used as inputs, and a feature selection procedure has been applied as a previous step. The different models developed have been statistically compared. The inputs used in the best estimation model for each station were the most important to estimate each hourly NO2 concentration level. These estimations can be a very useful resource to provide autonomous capacities as automatic decalibration detection or missing data imputation in monitoring networks. Finally, the similarities between stations, according to the relevance of variables, have been analysed with the aid of a hierarchical clustering algorithm. PB Springer Nature SN 1436-3240 YR 2019 FD 2019 LK http://hdl.handle.net/10498/35211 UL http://hdl.handle.net/10498/35211 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 07-nov-2026