Statistical distributions of air pollutant concentrations

Georgopoulos, Panos G.; Seinfeld, John H.

doi:10.1021/es00101a002

Cited by 133 publications

(54 citation statements)

References 14 publications

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“…PM2.5 and NO 2 data. The equations of these distributions were found and the distributional parameters estimated by the method of maximum-likelihood for the theoretical distributions (Georgopoulos and Seinfeld [2]; Lu [5]). Overall the Weibull distribution was found to be the most appropriate to represent all the parent distributions and used to fit the entire measured data.…”

Section: Resultsmentioning

confidence: 99%

“…Mineral and vegetable dust coming from the intensive commercial and industrial activities on vegetable seeds such as soybean, sunflower and castorbean add to the gaseous Volatile Organic Compounds (VOC), SO 2 and NO x from heating and ships sailing around the harbour. The urban area is characterized by high population density and economic development.…”

Section: Introductionmentioning

confidence: 99%

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Air pollution from traffic, ships and industry in an Italian port

Fava

Ruello

2008

WIT Transactions on Ecology and the Environment

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In the present study, the levels of NO x , primary and secondary formed particulate matter (PM10, PM2.5) originating from the intensive commercial and industrial activities within the port zone of Ancona (Italy) were analysed. The data have been evaluated, calculating by a Weibull distribution approach, the hourly, or using a recoded time, statistics of the pollutants concentrations and meteorological parameters measured in an area situated in a zone of influence of the harbour area. This gave the opportunity to study the dependence of the processes on the local scale as well as the impact of the harbour area on the urban scale. The highest concentrations of PM generally occurred in the harbour area whereas the NO 2 was found to be higher in the urban area. The pollutant transport from the harbour and related to the local dispersive ventilation capacity can become important in episodic situations even in the facing urbanised area.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Air pollution from traffic, ships and industry in an Italian port

Fava

Ruello

2008

WIT Transactions on Ecology and the Environment

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“…Assuming unchanged spatial distribution of emission sources, meteorological conditions and no reactive species, according to the rollback equation [36], the emission source reduction R (%) required to meet AQS can be estimated as:…”

Section: Estimation Of Emission Source Reductionmentioning

confidence: 99%

“…Many types of probability distributions have been used to fit air pollutant concentrations. These include lognormal distribution [34,35], Weibull distribution [36], gamma distribution [37] and type V Pearson distribution [38]. The Weibull probability model is suitable for presenting air quality data in a "pseudolognormal" distribution [39,40].…”

Section: Introductionmentioning

confidence: 99%

Statistical Character and Transport Pathways of Atmospheric Aerosols in Belgrade

Mijić¹,

Stojić²,

Perišić³

et al. 2012

Air Quality - New Perspective

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“…One is the probability distribution of high ozone values (e.g., above the standard level of 120 ppb). What makes this function a useful response metric is that ozone values in the range of 100-120 ppb calculated from UAM appear to conform very well to the Weibull probability density, 18,19 which is often used to account for inaccuracies in an exponential distribution.…”

Section: Emissions Inputsmentioning

confidence: 99%

Alternative Metrics for Assessing the Relative Effectiveness of NO_x and VOC Emission Reductions in Controlling Ground-Level Ozone

Georgopoulos

Arunachalam

Wang

1997

Journal of the Air & Waste Management Association

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This study presents a new set of metrics quantifying the response of photochemical air pollution systems to changes in O 3 precursor levels. Extending the traditional approach of using domain-wide maximum ozone values as the metric for guiding the development of emission control strategies, the new metrics incorporate attributes of the spatial and temporal pervasiveness and the severity of the ozone episodes considered for strategy development, as well as the impact on potential exposures to ozone. The usefulness of using various alternative criteria to better understand the directionality of the impact of emission controls is demonstrated via a set of 26 simulations of a three-day period of the severe July 1988 episode over the New Jersey-Philadelphia-Delaware Valley area. These simulations model the effect of across-theboard reductions of VOC and NO x by 25, 50, 75, and 100% of the base case. The impact of these reductions is found to be dependent on the control objective (e.g., reduction of exposure vs. reduction of the maximum) as well as on the targeted level of the control objective (e.g., reduction of exposures below 120 ppb vs. reduction of exposures below 80 ppb). INTRODUCTIONThe response of photochemical air pollution systems to changes in ozone precursor emissions (i.e., VOC and NO x ) is extremely complicated due to the nonlinear nature of photochemical atmospheric transformations. Furthermore, complex meteorological and emission patterns that are associated with significant uncertainties, when combined with the above mentioned nonlinearity, make the development of air quality strategies a very difficult task.

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Statistical distributions of air pollutant concentrations

Cited by 133 publications

References 14 publications

Air pollution from traffic, ships and industry in an Italian port

Air pollution from traffic, ships and industry in an Italian port

Statistical Character and Transport Pathways of Atmospheric Aerosols in Belgrade

Alternative Metrics for Assessing the Relative Effectiveness of NO_x and VOC Emission Reductions in Controlling Ground-Level Ozone

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Statistical distributions of air pollutant concentrations

Cited by 133 publications

References 14 publications

Air pollution from traffic, ships and industry in an Italian port

Air pollution from traffic, ships and industry in an Italian port

Statistical Character and Transport Pathways of Atmospheric Aerosols in Belgrade

Alternative Metrics for Assessing the Relative Effectiveness of NOx and VOC Emission Reductions in Controlling Ground-Level Ozone

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Product

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Alternative Metrics for Assessing the Relative Effectiveness of NO_x and VOC Emission Reductions in Controlling Ground-Level Ozone