Modeling air quality in main cities of Peninsular Malaysia by using a generalized Pareto model

The air pollution index (API) is an important figure used for measuring the quality of air in the environment. The API is determined based on the highest average value of individual indices for all the variables which include sulfur dioxide (SO₂), nitrogen dioxide (NO₂), carbon monoxide (CO), ozone...

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Veröffentlicht in:Environmental monitoring and assessment 2016, Vol.188 (1), p.65-65, Article 65
Hauptverfasser: Masseran, Nurulkamal, Razali, Ahmad Mahir, Ibrahim, Kamarulzaman, Latif, Mohd Talib
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creator Masseran, Nurulkamal
Razali, Ahmad Mahir
Ibrahim, Kamarulzaman
Latif, Mohd Talib
description The air pollution index (API) is an important figure used for measuring the quality of air in the environment. The API is determined based on the highest average value of individual indices for all the variables which include sulfur dioxide (SO₂), nitrogen dioxide (NO₂), carbon monoxide (CO), ozone (O₃), and suspended particulate matter (PM₁₀) at a particular hour. API values that exceed the limit of 100 units indicate an unhealthy status for the exposed environment. This study investigates the risk of occurrences of API values greater than 100 units for eight urban areas in Peninsular Malaysia for the period of January 2004 to December 2014. An extreme value model, known as the generalized Pareto distribution (GPD), has been fitted to the API values found. Based on the fitted model, return period for describing the occurrences of API exceeding 100 in the different cities has been computed as the indicator of risk. The results obtained indicated that most of the urban areas considered have a very small risk of occurrence of the unhealthy events, except for Kuala Lumpur, Malacca, and Klang. However, among these three cities, it is found that Klang has the highest risk. Based on all the results obtained, the air quality standard in urban areas of Peninsular Malaysia falls within healthy limits to human beings.
doi_str_mv 10.1007/s10661-015-5070-9
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The API is determined based on the highest average value of individual indices for all the variables which include sulfur dioxide (SO₂), nitrogen dioxide (NO₂), carbon monoxide (CO), ozone (O₃), and suspended particulate matter (PM₁₀) at a particular hour. API values that exceed the limit of 100 units indicate an unhealthy status for the exposed environment. This study investigates the risk of occurrences of API values greater than 100 units for eight urban areas in Peninsular Malaysia for the period of January 2004 to December 2014. An extreme value model, known as the generalized Pareto distribution (GPD), has been fitted to the API values found. Based on the fitted model, return period for describing the occurrences of API exceeding 100 in the different cities has been computed as the indicator of risk. The results obtained indicated that most of the urban areas considered have a very small risk of occurrence of the unhealthy events, except for Kuala Lumpur, Malacca, and Klang. 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The API is determined based on the highest average value of individual indices for all the variables which include sulfur dioxide (SO₂), nitrogen dioxide (NO₂), carbon monoxide (CO), ozone (O₃), and suspended particulate matter (PM₁₀) at a particular hour. API values that exceed the limit of 100 units indicate an unhealthy status for the exposed environment. This study investigates the risk of occurrences of API values greater than 100 units for eight urban areas in Peninsular Malaysia for the period of January 2004 to December 2014. An extreme value model, known as the generalized Pareto distribution (GPD), has been fitted to the API values found. Based on the fitted model, return period for describing the occurrences of API exceeding 100 in the different cities has been computed as the indicator of risk. The results obtained indicated that most of the urban areas considered have a very small risk of occurrence of the unhealthy events, except for Kuala Lumpur, Malacca, and Klang. However, among these three cities, it is found that Klang has the highest risk. Based on all the results obtained, the air quality standard in urban areas of Peninsular Malaysia falls within healthy limits to human beings.</abstract><cop>Cham</cop><pub>Springer International Publishing</pub><pmid>26718946</pmid><doi>10.1007/s10661-015-5070-9</doi><tpages>1</tpages></addata></record>
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subjects Air Pollutants - analysis
Air Pollutants - chemistry
Air pollution
Air Pollution - analysis
Air quality
Air quality standards
Atmospheric Protection/Air Quality Control/Air Pollution
Carbon monoxide
Carbon Monoxide - analysis
Cities
Earth and Environmental Science
Ecology
Ecotoxicology
Environment
Environmental Management
Environmental Monitoring
Humans
Land area
Malaysia
Models, Theoretical
Monitoring/Environmental Analysis
Nitrogen dioxide
Nitrogen Dioxide - analysis
Outdoor air quality
ozone
Ozone - analysis
Particulate matter
Particulate Matter - analysis
particulates
Pollution index
risk
Risk Assessment
Science
Seasons
Sulfur
Sulfur dioxide
Sulfur Dioxide - analysis
Tourism
Urban areas
Wind
title Modeling air quality in main cities of Peninsular Malaysia by using a generalized Pareto model
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