air quality mapping Articles
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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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High resolution maps of nitrogen dioxide for the Province of Styria, Austria
Knowledge about the spatial distribution of NO 2 concentrations is beneficial for setting up air quality measurement plans, assessing exposure, or in licensing procedures, where background concentration levels are required. Styria (16.400 km², 1.2 million population) is the second largest province in Austria. In order to take topographical effects on the pollutant dispersion into account, wind ...
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Airparif uses Isatis to process 11 million+ mesh grids and generate daily air quality maps - Case Study
Isatis has been part of Airparif data processing workflow for 10+ years. The software is used daily to gather data and map air pollution over Paris area. The facts Airparif is part of the French AASQA network (“Associations Agréées de Surveillance de la Qualité de l’Air”). The AASQA are a French non-profit association accredited by the French Ministry of ...
By Geovariances
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Applied comprehensive NO2 and particulate matter dispersion modelling for Switzerland
This paper presents the NO2 and Particulate Matter (PM) dispersion modelling for the whole of Switzerland. Air quality maps are computed for the year 2000 and future years. Future developments like the EURO-4 legislation on motor vehicles are taken into account. For all major source groups (road traffic, off-road traffic, industry, households, etc.), separate countrywide emission inventories with ...
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Synergetic use of TERRA/MODIS imagery and meteorological data for studying aerosol dust events in Cyprus
This paper presents the results from the analysis of TERRA/Moderate Resolution Imaging Spectrometer (MODIS) images for the detection and mapping of particulate air pollution in Cyprus. For this purpose, a set of selected air pollution events for the year 2002 was used, mainly associated with dust transported over the area from the surrounding deserts. The results depict the potential of the use ...
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Real-time pollution maps for Smart Cities
Massive-scale urbanization, industrialization, and population growth along with an increase in vehicular traffic and energy use have made urban air quality a global concern. The distribution of air pollution concentration over a large urban area predominantly depends on local emission sources and atmospheric flow conditions. Also, smart cities are the centres of various activities having ...
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Mapping of Air Quality Monitoring Systems to cover an area for hyperlocal data
Air quality data serves as the basis for all pollution mitigation strategies. A comprehensive air quality monitoring network provides valuable data insights to support effective air pollution management. Traditionally air quality monitoring is carried out using fixed reference-grade analyzers which are inherently very expensive. As a result, they can only be deployed in limited numbers and such ...
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Determination of compliance with UK and EU air quality objectives from high-resolution pollutant concentration maps calculated using ADMS-Urban
The main features and functionality of the urban air quality version of ADMS (ADMS-Urban) have been presented at previous Harmonisation Workshops. The system has now been set up and applied to air quality management, decision support and air quality forecasting in a number of major cities in Europe and beyond, including London. Key recent developments of the system include a regional chemistry ...
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The Kansas City, Missouri, Ground-Level Ozone (GLO) Project: A Community-Based Air Pollution Field Experiment
Tropospheric ozone concentrations for Kansas City are well known on a regional scale. The Kansas City, Missouri, ground-level ozone (GLO) project measured outdoor ozone concentrations using passive sensing devices (PSDs) on a neighborhood scale. Highly resolved exposure maps were made based on the detailed air quality observations collected during the seven week sampling study during the summer ...
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Breathing Dirty Air is A Latent Danger
Air pollution from wildfire smoke and lots of other sources is, unfortunately, a developing trouble around the world. The World Health Organization lately stated that 9 out of 10 people breathe polluted air and that 7 million people die every year due to it. At the country level, India has some of the worst air worldwide. In fact, 11 of the 12 highest levels cities are in India. The ozone, ...
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Community Spotlight: West Coast Calibration Factor Study
Each time a PurpleAir sensor is installed, and air quality data is uploaded to the PurpleAir Map, the quality and reach of our community increases. In this post, we highlight the results from a scientific study and discuss what it means in the bigger picture. The network improves with each additional sensor, and studies like the one in this post are also part of the PurpleAir story. A TRI-STATE ...
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Studies of air quality predictors based on neural networks
In recent years, urban air pollution has emerged as an acute problem because of its negative effect on health and living conditions. Regional air quality problems, in general, are linked to violations of specified air quality standards. The current study aims to find neural network based air quality predictors, which can work with a limited number of datasets and are robust enough to handle data ...
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Dispersion model input parameters from numerical weather prediction or synoptic observations
Regulatory dispersion modelling uses hourly synoptic observations (OBS) from a nearby station. Alternatively, hourly Numerical Weather Prediction (NWP) data are useable in air quality management. In parallel runs, OBS data and NWP (two grid scales, ∼60 km and ∼12 km) were input to the meteorological pre–processor of the Met Office NAME III dispersion model. Frequency distribution results for ...
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Delhi’s Pollution can Reduce 6 Years from Your Life
Air pollution is often based on the values of particulate matter of size less than 2.5 micrometers(PM 2.5) and particulate matter of size less than 10 micrometers (PM10).PM 2.5 reduces visibility and cause the air to appear hazy when the levels are elevated. It is the most harmful pollutant to human health which can lead to respiratory diseases, lung cancer, and heart attacks. The World Health ...
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Urban air quality sensors: More information, better quality of life in cities
The city of Donostia-San Sebastián seeks to make the most of all the advantages derived from ICT technologies. From an air quality perspective, the periods of high pollution are unusual, since its coastal location facilitates the dispersion of pollutants. This city holds a network of 6 monitoring stations which belong to the Basque Government Air Quality Network, which ...
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Project Breathe London, UK - Case Study
Summary: 100 AQMesh pods are used as stationary monitoring points in the groundbreaking Breathe London project; a hyperlocal air quality monitoring network providing a real-time map of air pollution across the city. Location: London, UK Date: July 2018 - Present Customer: C40 Cities Climate Leadership Group / Environmental Defense Fund Europe Objective: To map air pollution at an ...
By AQMesh
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Machine Learning (ML) boosts performance of low-cost air quality sensors
Recent research using Praxis/Urban air quality instruments has investigated the use of ML data correction methods to improve field performance of these devices, which use low-cost air quality sensors. The research, published just this month, covers sensing data for NO2, PM10 and PM2.5, read the paper ...
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Location for Air Quality Monitoring System Plays a Critical Role in Sensor Accuracy
Air quality is a complex, multi-faceted topic with many nuances. Air is dynamic. That means it moves continuously. And it carries its pollutants wherever it goes. So, it becomes quite difficult when it comes to monitoring the air quality of a particular ...
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Determination of Compliance with UK and EU Air Quality Objectives From High Resolution Pollutant Concentration Maps Calculated Using ADMS-Urban.
The main features and functionality of the urban air quality version of ADMS (ADMS-Urban) have been presented at previous Harmonisation Workshops. The system has now been set up and applied to air quality management, decision support and air quality forecasting in a number of major cities in Europe and beyond, including London. Key recent developments of the system include a regional chemistry ...
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Carbon Dioxide Measurement
What is Carbon Dioxide? Carbon Dioxide (CO2) is a chemical compound that is an odourless colourless gas at room temperature. The compound consists of one carbon atom and two oxygen atoms. Carbon dioxide enters the atmosphere through a number of ways; it is released by the exhaling of organisms and it is given off through the combustion of matter. Plants also take in Carbon Dioxide through the ...
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