Analysis of Winds Affecting Air Pollutant Transport at La Plata, Argentina

An hourly wind analysis for the populated area of La Plata city (with high industrial, power station and vehicular activi-ties) is presented and discussed. Euclidean distance and minimum covariance determinant (a robust correlation coeffi-cient) are employed, as similarity approaches, in order to co...

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Detalles Bibliográficos
Autores principales: Ratto, Gustavo, Maronna, Ricardo Antonio, Repossi, Patricia, Videla, Fabián Alfredo, Nico, Andrés, Reyna Almandos, Jorge Guillermo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2012
Materias:
Física
La Plata
Local Smoothing
Minimum Covariance Determinant
Robust Correlation
Similarity
Wind Analysis
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/119271
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-119271
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
La Plata
Local Smoothing
Minimum Covariance Determinant
Robust Correlation
Similarity
Wind Analysis
spellingShingle Física
La Plata
Local Smoothing
Minimum Covariance Determinant
Robust Correlation
Similarity
Wind Analysis
Ratto, Gustavo
Maronna, Ricardo Antonio
Repossi, Patricia
Videla, Fabián Alfredo
Nico, Andrés
Reyna Almandos, Jorge Guillermo
Analysis of Winds Affecting Air Pollutant Transport at La Plata, Argentina
topic_facet Física
La Plata
Local Smoothing
Minimum Covariance Determinant
Robust Correlation
Similarity
Wind Analysis
description An hourly wind analysis for the populated area of La Plata city (with high industrial, power station and vehicular activi-ties) is presented and discussed. Euclidean distance and minimum covariance determinant (a robust correlation coeffi-cient) are employed, as similarity approaches, in order to compare observed wind direction frequency patterns at two monitoring sites during 1998-2003. A preliminary assessment of two sectors, namely Sector 1 (NNW-N-NNE-NE) and Sector 2 (ENE-E-ESE), relevant for the transport of industrial air pollutants towards population exposed, is discussed taking variances into account and employing a locally weighted smoothing approach (LOESS). Both similarity ap-proaches allowed gain insight of wind patterns. The distance approach showed good similarity between sites while the correlation approach showed an uneven picture depending on the wind direction. Most of the differences are explained in terms of the sea-land breeze effect but also differences in terrain roughness and data quality are taken into account. Winds from sectors 1 or 2 (analyzed during 1998-2009) may occur more than 50% of the time, most of the differences regarding the influence of the day and the season on these sectors are attributable to sea-land breeze phenomena. The LOESS proved to be appropriate to analyze the stability with time of both sectors and to discard possible remaining patterns; results are in accordance with studies that assess the interannual variability for different variables in La Plata river area. The robust correlation coefficient revealed, as an example, the linear character of dependence between winds from sector 2 and sulfur dioxide concentrations. Wind velocities and calms are also discussed.
format Articulo
Articulo
author Ratto, Gustavo
Maronna, Ricardo Antonio
Repossi, Patricia
Videla, Fabián Alfredo
Nico, Andrés
Reyna Almandos, Jorge Guillermo
author_facet Ratto, Gustavo
Maronna, Ricardo Antonio
Repossi, Patricia
Videla, Fabián Alfredo
Nico, Andrés
Reyna Almandos, Jorge Guillermo
author_sort Ratto, Gustavo
title Analysis of Winds Affecting Air Pollutant Transport at La Plata, Argentina
title_short Analysis of Winds Affecting Air Pollutant Transport at La Plata, Argentina
title_full Analysis of Winds Affecting Air Pollutant Transport at La Plata, Argentina
title_fullStr Analysis of Winds Affecting Air Pollutant Transport at La Plata, Argentina
title_full_unstemmed Analysis of Winds Affecting Air Pollutant Transport at La Plata, Argentina
title_sort analysis of winds affecting air pollutant transport at la plata, argentina
publishDate 2012
url http://sedici.unlp.edu.ar/handle/10915/119271
work_keys_str_mv AT rattogustavo analysisofwindsaffectingairpollutanttransportatlaplataargentina
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bdutipo_str Repositorios
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