RT Journal Article
T1 A functional data analysis approach for the detection of air pollution episodes and outliers: a case study in Dublin, Ireland
A1 Martínez Torres, Javier
A1 Pastor Pérez, Jorge Juan
A1 Sancho Val, José Joaquín
A1 McNabola, Aonghus
A1 Martínez Comesaña, Miguel
A1 Gallagher, John
K1 3308.01 Control de la Contaminación Atmosférica
K1 2509.02 Contaminación Atmosférica
K1 1209 Estadística
AB Ground level concentrations of nitrogen oxide (NOx) can act as an indicator of air quality in the urban environment. In cities with relatively good air quality, and where NOx concentrations rarely exceed legal limits, adverse health effects on the population may still occur. Therefore, detecting small deviations in air quality and deriving methods of controlling air pollution are challenging. This study presents different data analytical methods which can be used to monitor and effectively evaluate policies or measures to reduce nitrogen oxide (NOx) emissions through the detection of pollution episodes and the removal of outliers. This method helps to identify the sources of pollution more effectively, and enhances the value of monitoring data and exceedances of limit values. It will detect outliers, changes and trend deviations in NO2 concentrations at ground level, and consists of four main steps: classical statistical description techniques, statistical process control techniques, functional analysis and a functional control process. To demonstrate the effectiveness of the outlier detection methodology proposed, it was applied to a complete one-year NO2 dataset for a sub-urban site in Dublin, Ireland in 2013. The findings demonstrate how the functional data approach improves the classical techniques for detecting outliers, and in addition, how this new methodology can facilitate a more thorough approach to defining effect air pollution control measures.
PB Mathematics
SN 22277390
YR 2020
FD 2020-02-10
LK http://hdl.handle.net/11093/3555
UL http://hdl.handle.net/11093/3555
LA eng
NO Mathematics, 8(2): 225 (2020)
NO Ministerio de Industria y Competitividad | Ref. RTI2018-096296-B-C21
DS Investigo
RD 25-mar-2025