Air Training Articles

  • Air Pollution in Subway Systems May be Much Worse than we realized

    As anyone who has ridden the subway knows, the air down there is unpleasant. New research done in Canada shows that air pollution levels in Toronto’s subway system are ten times greater than those above ground. It’s a troubling realization for subway-goers, but there are ways to keep these underground systems clean. ...


    By Camfil Ltd

  • Omnitracs Outlook 2017 Training: ELD Mandate, Roadnet anywhere, and more

    Getting healthy or traveling might be part of your New Year’s resolutions, but have you thought about professional development? Fleet managers who want to cut inefficiencies and work smarter in 2017 are joining us at Omnitracs Outlook 2017. With over 70 breakout sessions to choose from, there’s something for everyone — whether you’re a Safety Specialist, Logistics Analyst, ...


    By Omnitracs, LLC

  • Polluters Extended Responsibility

    "Waste generation is my right but collection & disposal is a responsibility of others. I just throw the non-value items on the streets and outside the homes of my neighbors but the waste like newspapers, plastic items, fabrics, metals, furniture, e-waste etc. which can fetch value, I store in my house & work place and sale to scrap merchants at the best prices. I do not care for the ...


    By Eco Recycling Ltd

  • Air Pollution Is Making Office Workers Less Productive

    Businesses invest a great deal of time and money in interventions that claim to increase workers’ productivity through on-the-job training, new protocols, advice from consultants, and so on. Recent research suggests that there’s a surprising input into productivity that no one ever thinks about: clean air. We all know that air pollution is bad for our health, and researchers ...


    By Camfil Ltd

  • Environmental Regulatory Compliance Practitioner Spotlight: Pete Schwalbach

    Name: Pete Schwalbach Office: St Paul Practice Area: OPA Area of expertise: Environmental Regulatory Compliance About Me in 140 Characters Happily married, father of three, ...


    By Antea Group - USA

  • How we can vanquish pollution within our lifetimes

    Simply spreading the message could change the world The following is excerpted The Brown Agenda: My Mission To Clean up The World’s Most Life-Threatening Pollution by Richard Fuller, and is published here with permission from the author. Pollution is the leading cause of death in low- and middle-income countries. The top 10 ...


    By Ensia

  • Tracking pollution at a personal level

    Two big stories from 2014 were the amount of air pollution in cities, especially in China, and the rise of “wearables” and other personal technologies people use to track things about themselves, often having to do with health and fitness measurements, such as steps taken, hours slept, heart rate and more. Now, the ...


    By Ensia

  • Evaluation of the influence of micrometeorological data on concentration estimates

    A dispersion model for continuous releases of pollutants in the atmospheric boundary layer is applied to study the influence on modelled concentrations of different estimates of the key micrometeorological variables that represent the dispersion processes. The modelling approach is based on the advection-diffusion equation and includes profiles of wind and eddy diffusivity for the entire ...


    By Inderscience Publishers

  • Pollutant source identification in a city district by means of a street network inverse model

    This study presents the performances of an inverse modelling approach aiming to identify position and emission rate of a localised pollutant source placed within a city district. To that purpose we combine wind tunnel experiments and an urban dispersion model. Experiments are performed in an idealised urban canopy, made up of regularly spaced blocks, and provide the pollutant concentration field ...


    By Inderscience Publishers

  • Numerical simulations of street canyon ventilation and pollutant dispersion

    The relationship among air exchange rate (ACH), pollutant exchange rate (PCH) and friction factor ( f ) is proposed in this study to evaluate the performance of ventilation and pollution removal of hypothetical urban areas. Urban areas were simplified to arrays of idealised, repeated two-dimensional (2D) street canyons of different building-height-to-street-width (aspect) ratios (ARs) and ...


    By Inderscience Publishers

  • Atmospheric dispersion and individual exposure of hazardous materials. Validation and intercomparison studies

    In a previous study, new approaches have been introduced in the CFD-RANS modelling, according to which the concentration time scales are estimated as a function not only of the flow turbulence time scales but also of the pollutant travel times. The new approaches have been implemented for the calculation of the concentration fluctuation dissipation time scale and the maximum individual exposure ...


    By Inderscience Publishers

  • Source identification by a statistical analysis of backward trajectories based on peak pollution events

    Back-trajectory techniques are extensively used to identify the most probable source locations, starting from the known pollutants concentration data at some receptor sites. In this paper, we review the trajectory statistical methods (TSMs) that are most used in literature for source identification, which are essentially based on the concept of residence time (RT), and we introduce a novel ...


    By Inderscience Publishers

  • Chemical reactions at street scale using a Lagrangian particle dispersion model

    In the context of the FEDER AIRCITY project, Paris City is modelled with a 3 m resolution with the purpose of computing pollutant concentration relevant for human exposition. This project involves AIRPARIF (Ile-de-France Air Quality Monitoring Network), for emission and immission data, CEA (French Atomic and Alternative Energy Agency) for HPC availability, National Geographic Institute (IGN) for ...


    By Inderscience Publishers

  • Unified model intercomparison for volcanic ash transport modelling

    Our group is pursuing a volcanic ash transport model intercomparison study to evaluate the relative performance of several atmospheric transport models for selected case studies. These intercomparisons require the definition of standard output formats for producing results in a common framework. We define here the common format and develop a set of evaluation tools, allowing for side-by-side ...


    By Inderscience Publishers

  • Modelling dispersion of smoke from wildfires in a Mediterranean area

    We present a modelling system for the estimation of forest fire emissions ( prebolchem-fire ) and their inclusion in the atmospheric composition model BOLCHEM. Emission fluxes have been estimated following the methodology proposed by Seiler and Crutzen (1980) and using MODIS ‘burned area product’. Then they are modulated following the WRAP approach (WRAP, 2005). This approach is also used for ...


    By Inderscience Publishers

  • Towards a new scheme for parametrisation of deep convection in NAME III

    This paper describes an updated scheme for parametrisation of atmospheric convection to be used in the Met Office Atmospheric Dispersion Model (NAME III). In this scheme, the vertical transport of particles due to convection is represented in a 1-dimensional model based on a ‘mass-flux’ approach. Empirical formulas are used to obtain the mass fluxes and the convective precipitation is used for ...


    By Inderscience Publishers

  • Operational air pollution prediction and doses calculation in case of nuclear emergency at Krško Nuclear Power Plant

    The paper presents fully operational air pollution prediction and doses calculation system working in 2/24/7/365 mode for more than a decade in Krško Nuclear Power Plant (NPP). Krško NPP lies in complex terrain in Slovenia very close to Croatia border. A dedicated software is available for detailed estimation of possible radioactive emission (source term). This part of the procedure is used by ...


    By Inderscience Publishers

  • Determinating the influence of different PM 10 sources on air quality in Ljubljana basin with CALPUFF dispersion model

    Ljubljana has an unfavourable geographical location in the basin, almost entirely surrounded by high hills. Winds in the basin are often weak and situations with temperature inversion are very frequent, therefore, many PM 10 daily limit value exceedances were observed in 2011. The Directive 2008/50/EC (EU, 2008) requires member states to adjust or provide new air quality plans in order to ...


    By Inderscience Publishers

  • Plumbers & Pipe Fitters 853 case study

    Sprinkler & Fire Protection Training Facility The Problem Local Union 853- Sprinkler Fitters of Ontario called on DiversiTech to provide ventilation for their new Sprinkler and Fire Protection Trade Centre and Training Facility. The Solution Two guidelines were presented for consideration before unit selection was made. The school did not want to ...


    By DiversiTech Inc

  • Compliance Corner - Develop and implement

    On March 25, 2003, the US Department of Transportation (DOT) issued an emergency revision to the Hazardous Materials Regulations (HMR) relating to security training and security planning for transporters and offerors (shippers) of hazardous materials (hazmat). DOT recognised a need to address growing concerns over the significant threat that hazmat can pose when it is used for malicious or ...


    By Verisk 3E

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you