Evaluation of spatial variability of PM 10 concentrations in London

• Tipo: Artigo em Revista Científica Internacional
• Data: 2012

Autores

J. C. M. Pires (Autor) FEUP; F. G. Martins (Autor) FEUP

Revista

Título: Water, Air, and Soil Pollution

Vol. 223 Nº 5

Páginas: 2287-2296

ISSN: 0049-6979

Editora: Springer Nature

Indexação

ISI Web of Knowledge - 3 Citações

ISI Web of Science

Scopus - 7 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Ciências da terra e ciências do ambiente

CORDIS: Ciências Naturais > Ciências do ambiente

Projetos Associados

PEst-C/EQB/UI0511/2011 - PROJECTO ESTRATÉGICO - UI 511 - 2011-2012

Outras Informações

ID Authenticus: P-002-9KV

DOI: 10.1007/s11270-011-1023-2

Abstract (EN): This study aims to apply principal component analysis (PCA) to identify monitoring sites with similar variations of PM10 concentrations in the London Air Quality Monitoring Network. This statistical methodology was applied to hourly average concentrations measured at 27 monitoring sites during the period from January 2000 to December 2009. The monitoring sites were selected according their efficiency in the study period (greater than 75% for each year). It was observed that the hourly average PM10 concentrations were decreasing along the selected period at almost all monitoring sites. PCA was performed for each year, selecting the number of principal components (PCs) that had at least 95% of the original data variance. Analysing the frequency with which each pair of monitoring sites gave a significant contribution to the same PC, nine city areas with specific PM10 behaviour were identified. Thus, monitoring sites with redundant measurements during the studied period were identified, being possible to remove them to decrease the costs relative to their maintenance or replace them to increase the monitored area.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 10