Robust analysis of PM2.5 concentration measurements in the ecuadorian park La Carolina

Hernández Perdomo, Wilmar and Méndez Alonso, Alfredo and Díaz Márquez, Ángela María and Zalakeviciute, Rasa (2019). Robust analysis of PM2.5 concentration measurements in the ecuadorian park La Carolina. "Sensors", v. 19 (n. 21); pp. 1-42. ISSN 1424-8220. https://doi.org/10.3390/s19214648.

Description

Title: Robust analysis of PM2.5 concentration measurements in the ecuadorian park La Carolina
Author/s:
  • Hernández Perdomo, Wilmar
  • Méndez Alonso, Alfredo
  • Díaz Márquez, Ángela María
  • Zalakeviciute, Rasa
Item Type: Article
Título de Revista/Publicación: Sensors
Date: 25 October 2019
ISSN: 1424-8220
Volume: 19
Subjects:
Freetext Keywords: PM2.5 concentration measurements; Robust location estimation; Robust scale estimation
Faculty: E.T.S.I. y Sistemas de Telecomunicación (UPM)
Department: Matemática Aplicada a las Tecnologías de la Información y las Comunicaciones
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

In this article, a robust statistical analysis of particulate matter (PM2.5) concentration measurements is carried out. Here, the region chosen for the study was the urban park La Carolina, which is one of the most important in Quito, Ecuador, and is located in the financial center of the city. This park is surrounded by avenues with high traffic, in which shopping centers, businesses, entertainment venues, and homes, among other things, can be found. Therefore, it is important to study air pollution in the region where this urban park is located, in order to contribute to the improvement of the quality of life in the area. The preliminary study presented in this article was focused on the robust estimation of both the central tendency and the dispersion of the PM2.5 concentration measurements carried out in the park and some surrounding streets. To this end, the following estimators were used: (i) for robust location estimation: α-trimmed mean, trimean, and median estimators; and (ii) for robust scale estimation: median absolute deviation, semi interquartile range, biweight midvariance, and estimators based on a subrange. In addition, nonparametric confidence intervals were established, and air pollution levels due to PM2.5 concentrations were classified according to categories established by the Quito Air Quality Index. According to these categories, the results of the analysis showed that neither the streets that border the park nor the park itself are at the Alert level. Finally, it can be said that La Carolina Park is fulfilling its function as an air pollution filter.

Funding Projects

TypeCodeAcronymLeaderTitle
UnspecifiedXII-2018-13UnspecifiedUnspecifiedCEDIA-Ecuador (under the research project CEPRA)
UnspecifiedERa.ERI.WHP.18.01UnspecifiedUnspecifiedUniversidad de Las Americas, Quito, Ecuador

More information

Item ID: 67724
DC Identifier: https://oa.upm.es/67724/
OAI Identifier: oai:oa.upm.es:67724
DOI: 10.3390/s19214648
Official URL: https://www.mdpi.com/1424-8220/19/21/4648
Deposited by: Memoria Investigacion
Deposited on: 01 Feb 2022 19:20
Last Modified: 01 Feb 2022 19:20
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