air quality assessment Articles
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Combination of measured and modelling data in air quality assessment in Spain
This paper describes a methodology to combine measurements from air quality stations and estimates from the CHIMERE model for air quality assessment in Spain. The methodology consists of using linear regression and kriging interpolation to correct the model results, improving the fit to the observations. It was separately applied to rural and urban conditions, giving rise to maps for each case, ...
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Uncertainty analysis of modelling studies included in air quality assessments
This paper deals with the development of a quality analysis/quality control (QA/QC) methodology for modelling studies associated with air quality assessments. Among other benefits, this will allow data quality objectives for model input data to be derived and the importance of policy oriented model applications to be assessed. The procedure for evaluating model uncertainty has profited from a ...
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Operational meteorological pre-processing at Emilia- Romagna ARPA Meteorological Service as a part of a decision support system for air quality management.
In the framework of the Integrated Decision Support System for air quality assessment and management operating at the Emilia-Romagna Region Meteorological Service, an appropriate meteorological input is necessary: 1) to provide meteorological information for evaluation of the pollution data observed at the urban monitoring stations; 2) as input data to run daily statistical models for air quality ...
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Investigation of roadside concentrations in busy streets using the model GRAM: conditions leading to high short-term concentrations
A new air quality assessment model GRAM, based on current Gaussian models, is described. It has been specifically designed for convenient assessment of air quality concentrations in relation to new air quality standards. Particular attention is paid to short-term peak concentrations. Factors which are likely to lead to high roadside concentrations are described. It is shown that none of the ...
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Using ADMS models for Air Quality Assessment and Management in China
Many cities and regions are undertaking studies of air quality in cities to determine both the current state of the environment and the effect of future economic and environmental strategies in order to manage local air quality. Often these studies are driven by legislation such as the European Union requirement to model agglomerations or the Chinese requirements to study air quality capacity and ...
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Recommendations for the spatial assessment of air quality resulting from the FP6 EU project Air4EU
Air4EU is an FP6 European project with the major aim of providing recommendations on methodologies for the spatial assessment of air quality on local, urban and regional scales. The emphasis is on methodologies that combine monitoring and modelling and on spatial assessment for regulatory purposes, i.e., the EU daughter directives. The recommendations coming from Air4EU are intended as guidance ...
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Air quality assessment in the European mega city Ruhr area: Effects of a low emission zone
The Ruhr area is the biggest German megalopolis, a conglomerate of several intertwining major cities, with more than 3.5 million inhabitants. In spite of many efforts in recent years to improve the air quality in the Ruhr area, especially residents in street canyons with a high traffic density are still exposed to poor air quality, and meeting the limit values of European air quality directives ...
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Air quality assessment in Bologna by an urban dispersion model
An urban dispersion model (ADMS?Urban) was run to calculate PM10 and NO2 concentration during a one-year period, on a district of Bologna, Italy. Moreover, the exposure of 333 children was estimated using model outputs corrected with observations. The model was able to correctly simulate the long-term statistical properties of roadside observed concentrations (such as annual mean and frequency ...
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Criteria for the assessment of air quality levels in homogeneous areas
A methodology is proposed for the appraisal of the data to confront with air quality limits. The methodology assesses air quality levels on the basis of mean values calculated as an average of all data collected in homogeneous areas, from monitoring stations located in sites not conditioned from local sources emissions. The resulting value represents the air quality of the area better than a ...
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Towards uncertainty mapping in air-quality modelling and assessment
The aim of this paper is to promote the use of uncertainty mapping when spatial assessments of air quality are made. A large number of air quality maps are produced for scientific and policy purposes but rarely are corresponding maps of their uncertainty included. The need for such maps and the methods to produce them are described. Several uncertainty parameters are discussed but it is ...
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Environmental impact assessment of air quality in street canyons related to council directives 1999/30/EC and 2000/69/EC
Council directive 96/62/EC on ambient air quality assessment and management requires the development of action plans for zones where concentrations of pollutants in ambient air exceed limit values. The directive also recognises air quality models as assessment tools. We discuss the application of an integrated air quality model, Air quality modelling in Urban Regions using an Optimal Resolution ...
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Air quality assessment in the EU: room for improvement?
Different modelling approaches are used to design and assess air quality plans across Europe. This study assessed the strengths and weaknesses of these different approaches. The researchers conclude that a large variety of models is in use, without a preferred or standard model having emerged yet. They identify integrating local-scale and large-scale models and verifying models with measurements ...
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Air quality assessment in the European Mega City Ruhr Area and effects of low emission zones
The Ruhr area is the biggest German megalopolis, a conglomerate of several intertwining major cities, with more than 5.3 million inhabitants. In spite of many efforts in recent years to improve the air quality in the Ruhr area, especially residents in street canyons with a high traffic density are still exposed to poor air quality and meeting the limit values of European air quality guidelines ...
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Application of the MELPUFF model to air quality assessment in the industrial area of Huelva (Spain)
The mesoscale Lagrangian puff dispersion model (MELPUFF) has been used in air quality assessment in the area of Huelva. The Huelva area is highly industrialised and it is located on the Atlantic coast of southern Spain. The MELPUFF model was applied to obtain monthly-averaged distributions of SO2 and number of probable exceedances per month of the EU air quality standards. The study period ...
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Cumulative Air Quality Impact Assessments - A Case Study
Introduction Deregulation across the country has resulted in the proposal of hundreds of new power plants within the last several years. Each power plant, individually, is required to demonstrate conformance with state and federal air quality regulations. However, there is still a great deal of public concern over the combined or cumulative impact that all of these proposed plants may have on ...
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A system for assessment of climatic air pollution levels in Bulgaria: description and first steps towards validation
The EC FP6 project CECILIA (http://www.cecilia-eu.org) aims at climate change impacts and vulnerability assessment in targeted areas of Central and Eastern Europe. Emphasis is given to regional climate change modelling at resolution of 10 km. The respective weather patterns influence local air quality. For its assessment EPA Models-3 (MM5, CMAQ, SMOKE) is used. The meteorological input is ...
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Case Study: Major Southern California Studios
Most studios require - and Ellis is pleased to provide - emergency response services, from mold testing, to indoor air, to asbestos removal. Most recently, Ellis managed a $40,000 cleanup of the air supply system of a huge filming stage, following a fire and resultant smoke damage. Other services provided since 1995 include numerous asbestos and lead surveys, abatement projects, soils testing, ...
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Observational needs for four-dimensional air quality characterization
Surface-based monitoring programs provide the foundation for associating air pollution and causal effects in human health studies, and they support the development of air quality standards and the preparation of emission reduction strategies. While surface-oriented networks remain a key tool for addressing traditional single pollutant human exposure challenges, these networks in isolation are not ...
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Assessing Clean Air Zones with ADMS-Urban
CERC develop the world-leading model ADMS-Urban which is designed for assessing air quality interventions such as Clean Air Zones (CAZ) and Low Emissions Zones (LEZ). For example, ADMS-Urban is being used by · Transport for Greater Manchester to model CAZ options · Glasgow City Council to model LEZ proposals Contact CERC now for · ADMS air quality software ...
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An assessment of urban VOC emissions and concentrations by comparing model results and measurements
From September 1994 to June 1996, the city of Antwerp carried out a volatile organic compound (VOC) measurement campaign in the urban agglomeration of Antwerp. The results were used to further validate a traffic emission model for the city of Antwerp and to evaluate the performance of three different "street canyon" models that were applied to calculate benzene concentrations at ten ...
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