CERC news http://www.cerc.co.uk CERC news en-us 2024 Cambridge Environmental Research Consultants Ltd.Wed, 15 May 2024 00:00:00 GMT ADMS 6.0.2 released http://www.cerc.co.uk/about-us/news.php?newsitem=417#news417 <p>CERC are pleased to announce the release of <a href="https://www.cerc.co.uk/ADMS" title="Go to ADMS page">ADMS 6.0.2</a>. This is a minor update providing additional output options that were requested at the 2023 ADMS User Group Meeting.</p> <p>The first of these new options is the ability to output <strong>additional plume properties for point sources</strong> to the .cen file. The plume density and Richardson number used in the plume rise calculations can now be output, which can be useful when examining the behaviour of elevated dense releases. Additionally, wind speed and turbulence values at the mean plume height can now be output allowing for greater understanding of the behaviour of the plume.</p> <p>The other new output option is the ability to output <strong>the accumulated horizontal concentration flux</strong> at specific locations. This output is given per wind direction sector making for easy comparison with measurements obtained from directional passive air samplers.</p> <p>In addition to these new output options we have decreased run times for runs with spatially varying deposition. For full details on the changes within ADMS 6.0.2 please see the <a href="https://www.cerc.co.uk/environmental-software/assets/data/doc_userguides/CERC_ADMS_6.0.2_What_is_New.pdf" title="Access linked document">What&#39;s New document</a>.</p> <p>ADMS 6.0.2 is available to <a href="https://www.cerc.co.uk/software-support/user-area/other-downloads.html" title="Go to Other downloads page">download</a> from the <a href="https://www.cerc.co.uk/UserArea" title="Go to User Area page">User Area</a> for licence holders with current support.</p> http://www.cerc.co.uk/about-us/news.php?newsitem=417#news417 Wed, 15 May 2024 00:00:00 GMT Air quality assessment of amine-based carbon capture http://www.cerc.co.uk/about-us/news.php?newsitem=416#news416 <p>The <a href="https://www.gov.uk/government/organisations/environment-agency" title="Access Environment Agency website" target="_blank">Environment Agency</a> commissioned <a href="https://cerc.co.uk/" title="Go to CERC homepage">CERC</a> to carry out a project instigated by their modelling team AQMAU, entitled <strong><em>Improving Post-Combustion Carbon Capture Air Quality Risk Assessment Techniques</em></strong>. The project aimed to increase confidence in risk assessments for regulatory purposes, to integrate practical tools and evidence, and to inform decision-making.</p> <p>The decarbonisation of industry is pushing the evolution of air dispersion modelling to assess the risk of emissions from emerging techniques such as amine-based post-combustion carbon capture.</p> <p>As developers of the state-of-the-art <a href="https://www.cerc.co.uk/ADMS" title="Go to ADMS page">ADMS</a> amines chemistry module, CERC were ideally placed to carry out this project and have published their <a href="https://www.cerc.co.uk/environmental-research/assets/data/CERC_2024_Improving_Post-Combustion_Carbon_Capture_Air_Quality_Risk_Assessment_Techniques.pdf" title="Access linked document" target="_blank">report</a>.</p> <p>The project addresses the uncertainties of ADMS input data and assumptions and improves the transparency and significance of the assessment process. It will further increase confidence and understanding of the ADMS approach and assessment strategies.</p> <p>As part of the project, CERC developed an additional user-friendly <a href="https://www.cerc.co.uk/environmental-software/assets/data/ADMS%20Amine%20Chemistry%20User%20Input%20Tool.xlsm" title="Access linked document" target="_blank">tool</a> and <a href="https://www.cerc.co.uk/environmental-software/assets/data/doc_userguides/ADMS_Amine_Chemistry_User_Input_Tool_User_Guide.pdf" title="Access linked document" target="_blank">user guide</a> to help model users calculate and document the amine-related input parameters.</p><br /><br /><img src="http://www.cerc.co.uk/about-us/assets/news/CERC20240503_amine_tool.png" width="420" height="245"/> http://www.cerc.co.uk/about-us/news.php?newsitem=416#news416 Fri, 03 May 2024 00:00:00 GMT Booking is now open for the ADMS User Group Meetings, 4-5 December 2024, Cambridge http://www.cerc.co.uk/about-us/news.php?newsitem=415#news415 <p>You can now book <a href="http://cerc.eventbrite.com/" title="Access Eventbrite website" target="_blank">your tickets</a> for the 2024 ADMS User Group Meetings, which will be held at <a href="https://www.mollerinstitute.com/contact/" title="Access Møller Institute website" target="_blank">Møller Institute</a> on 4th and 5th December.</p> <ul><li><a href="https://adms6ugm2024.eventbrite.co.uk" title="Access Eventbrite website" target="_blank">ADMS 6 User Group Meeting, 4th December</a></li> <li><a href="https://admsurbanroadsugm2024.eventbrite.co.uk" title="Access Eventbrite website" target="_blank">ADMS-Urban and ADMS-Roads, 5th December</a></li></ul> <p>The annual ADMS User Group Meetings are a great opportunity to hear the latest ADMS model news and advice from CERC consultants and model developers, to hear talks by model users about their own applications of the software, and to network with other model users.</p> <p><a href="http://cerc.eventbrite.com/" title="Access Eventbrite website" target="_blank">Tickets are available to order through Eventbrite</a> until 23:30 on Tuesday 12th November. Organisations with a valid software support contract are entitled to one or more tickets free of charge depending on the type of licence held. The draft programme will be published soon.</p> <br /><br /><img src="http://www.cerc.co.uk/about-us/assets/news/CERC20240502_UGM.JPG" width="375" height="210"/> http://www.cerc.co.uk/about-us/news.php?newsitem=415#news415 Thu, 02 May 2024 00:00:00 GMT Air quality impact of paint spraying facilities http://www.cerc.co.uk/about-us/news.php?newsitem=414#news414 <p><a href="https://cerc.co.uk/" title="Go to CERC homepage">CERC</a> has carried out assessments of the air quality impact of exhaust plumes from vehicle and aircraft paint spraying facilities to support planning applications, using <a href="https://www.cerc.co.uk/ADMS" title="Go to ADMS 6 page">ADMS 6</a>.</p> <p>CERC&#39;s <a href="https://www.cerc.co.uk/consultancy" title="Go to Consultancy page">consultancy</a> team worked from a list of paint products, together with Safety Data Sheets and Technical Data Sheets for paint components. These were combined with paint usage data and Emission Limit Values (ELVs) to calculate emission rates of particulates, VOCs and isocyanates from spray booth exhaust stacks.</p> <p>Process-specific ELVs are provided in Defra Process Guidance Notes such as <a href="https://www.gov.uk/government/publications/original-coating-of-road-vehicles-and-trailers-process-guidance-note-647" title="Access Gov UK webpage" target="_blank">6/47(11)</a>: <em>Statutory guidance for original coating of road vehicles and trailers</em>.</p> <p>The Guidance Note 6/47(11) refers to the calculation of a suitable stack height using HMIP Technical Guidance Note (Dispersion) D1, now obsolete. The Note states that alternative dispersion models may be used.</p> <p>We have found that the application of ADMS can lead to the calculation of a lower stack height than screening methods such as D1, especially where working hours are represented.</p> <br /><br /><img src="http://www.cerc.co.uk/about-us/assets/news/CERC20240429_paint_spraying.jpg" width="375" height="340"/> http://www.cerc.co.uk/about-us/news.php?newsitem=414#news414 Mon, 29 Apr 2024 00:00:00 GMT 2024 ADMS User Group Meetings: 4-5 December 2024, Cambridge http://www.cerc.co.uk/about-us/news.php?newsitem=413#news413 <p>The 2024 ADMS User Group Meetings will be held at the <a href="https://www.mollerinstitute.com/conference-centre/" title="Access M&oslash;ller Institute website" target="_blank">M&oslash;ller Institute</a>, Churchill College, Cambridge, on the following dates:</p> <ul><li>ADMS 6, Wednesday 4 December</li> <li>ADMS-Urban and ADMS-Roads, Thursday 5 December</li></ul> <p>The annual ADMS User Group Meetings are a great opportunity to hear the latest ADMS model news and advice from CERC consultants and model developers, to hear talks by model users about their own applications of the software, and to network with other model users. Tickets will be available to book soon.</p> <br /><br /><img src="http://www.cerc.co.uk/about-us/assets/news/CERC20240318_UGM.JPG" width="375" height="210"/> http://www.cerc.co.uk/about-us/news.php?newsitem=413#news413 Mon, 18 Mar 2024 00:00:00 GMT EFT 12 update for ADMS-Roads, ADMS-Urban and ADMS-Airport http://www.cerc.co.uk/about-us/news.php?newsitem=412#news412 <p>The UK Department for Environment, Food & Rural Affairs and the Devolved Administrations have released version 12 of the <a href="https://laqm.defra.gov.uk/review-and-assessment/tools/emissions-factors-toolkit.html" title="Access Defra website" target="_blank">Emissions Factors Toolkit</a> (EFT). Details of the changes for this version are given in the <a href="https://laqm.defra.gov.uk/wp-content/uploads/2023/11/EFTv12.0-user-guide-v1.0.pdf" title="Access linked document" target="_blank">EFT user guide</a>.</p> <p>We have processed the new EFT and published an update for <a href="https://www.cerc.co.uk/Roads" title="Go to ADMS-Roads page">ADMS-Roads</a>, <a href="https://www.cerc.co.uk/Urban" title="Go to ADMS-Urban page">ADMS-Urban</a> and <a href="https://www.cerc.co.uk/airport" title="Go to ADMS-Airport">ADMS-Airport</a> version 5 on the <a href="https://www.cerc.co.uk/software-support/user-area/other-downloads.html" title="Go to Other downloads page">Other downloads</a> page of our User Area. If you are registered, you can go straight to the <a href="https://cerc.sharefile.com/home/shared/foff72b5-de29-4443-9bb0-50109f300e47" title="Access Sharefile website" target="_blank">download folder</a>. If you are not registered, follow the instructions on the User Area <a href="https://www.cerc.co.uk/UserArea" title="Go to User area page">main page</a>.</p> http://www.cerc.co.uk/about-us/news.php?newsitem=412#news412 Fri, 01 Mar 2024 00:00:00 GMT DHAQ-SEA - Demonstration of High-resolution Air Quality forecasting in South East Asia http://www.cerc.co.uk/about-us/news.php?newsitem=411#news411 <p>There is an increased risk of certain health conditions where ambient air pollution levels are high. <a href="https://cerc.co.uk/" title="Go to CERC homepage">CERC</a> are working on a feasibility study for high-resolution (street-scale) air quality forecasting in South East Asia. <a href="https://asean.org/" title="Access ASEAN website" target="_blank">ASEAN</a> countries can be subject to poor air quality as a consequence of <a href="https://asean.org/wp-content/uploads/2021/01/ASEANAgreementonTransboundaryHazePollution-1.pdf" title="Access linked document" target="_blank">transboundary pollution</a> as well as local pollutant sources. Alerting the public prior to air pollution episodes allows vulnerable and other individuals to take action to reduce the health impacts of poor air quality. The <a href="https://www.cerc.co.uk/environmental-software/MAQS.html" title="Go to MAQS page">MAQS</a> coupled system is being used to ensure that both regional (using data from <a href="https://atmosphere.copernicus.eu/air-quality" title="Access CAMS website" target="_blank">CAMS</a>) and local (modelled using <a href="https://www.cerc.co.uk/Urban" title="Go to ADMS-Urban page">ADMS-Urban</a>) contributions to pollution are accounted for.</p> <p>CERC is working closely with project partners from the Institute for Environment and Resources, <a href="https://vnuhcm.edu.vn/" title="Access Vietnam National University" target="_blank">Vietnam National University, Ho Chi Minh City</a> and the <a href="https://www.ukm.my/fst/en/directory-department-of-earth-environmental-sciences/" title="Access Universiti Kebangsaan Malaysia website" target="_blank">Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia</a>. The project will generate high resolution pollution maps corresponding to air pollution episodes for two distinct domains, one in Malaysia and one covering parts of southern Vietnam and Cambodia. Key ASEAN stakeholders will be invited to an online workshop to discuss project outcomes during May 2024.</p> <p>This project will demonstrate that regional to-local-scale air quality forecasting systems could be implemented throughout ASEAN because: the modelling system relies primarily on open data sources; MAQS allows both local and regional contributions to ambient pollution to be accounted for; and CERC are highly experienced in the provision of <a href="https://www.cerc.co.uk/forecasting/air-quality.html" title="Go to air quality page">air quality forecasting services</a>.</p> <p>The study has received <a href="https://www.gov.uk/government/collections/official-development-assistance-oda--2" title="Access ODA website" target="_blank">Official Development Assistance</a> (ODA) funding from the UK government <a href="https://www.gov.uk/government/organisations/foreign-commonwealth-development-office" title="Access FCDO website" target="_blank">Foreign, Commonwealth & Development Office</a> (FCDO) under the <a href="https://www.gov.uk/international-development-funding/research-and-innovation-for-development-in-asean-rida" title="Access RIDA website" target="_blank">Research and Innovation for Development in ASEAN</a> (RIDA) programme. The project focus is on the RIDA priority area &#39;Health&#39;, addressing <a href="https://www.un.org/sustainabledevelopment/health/" title="Access UN website" target="_blank">Sustainable Development Goal (SDG) 3</a> &#39;Ensure healthy lives and promote well-being for all at all ages.&#39; <br /><br /><img src="http://www.cerc.co.uk/about-us/assets/news/CERC20240229_DHAQ-SEA.png" width="350" height="150"/> http://www.cerc.co.uk/about-us/news.php?newsitem=411#news411 Thu, 29 Feb 2024 00:00:00 GMT Exploring air quality model evaluation techniques http://www.cerc.co.uk/about-us/news.php?newsitem=410#news410 <p>Comparisons of modelled and measured data are a key part of evaluating model performance. <a href="https://cerc.co.uk/" title="Go to CERC homepage">CERC</a>&#39;s latest project for the Atmospheric Dispersion Modelling Liaison Committee (<a href="https://admlc.com/" title="Access ADMLC website" target="_blank">ADMLC</a>) is investigating approaches to air quality model evaluation. A literature review is identifying established and emerging model evaluation techniques and performance metrics for a variety of model types and applications. Case studies will then be used to test the different performance metrics individually and in combination. The project aims to develop best practice recommendations for evaluating a broad range of model applications, reporting late in 2024.</p> <p>CERC have extensive experience of model <a href="https://www.cerc.co.uk/Validation" title="Go to validation page">evaluation</a> through assessments of the <a href="https://www.cerc.co.uk/ADMS" title="Go to ADMS page">ADMS</a> family of models and <a href="https://cerc.co.uk/environmental-research/model-evaluation.html#intercomparison" title="Go to inter-comparisons page">inter-comparisons</a> with other models. Jenny Stocker, CERC&#39;s Associate Director (Research) has been a long-standing participant in the Forum for Air Quality Modelling (<a href="https://fairmode.jrc.ec.europa.eu/" title="Access FAIRMODE website" target="_blank">FAIRMODE</a>) initiative which has developed model quality and model performance indicators. CERC have developed and made public the &#39;<a href="https://www.cerc.co.uk/ModelEvaluationToolkit" title="Go to Model Evaluation Toolkit page">Model Evaluation Toolkit</a>&#39; which allows user-friendly access to a broad selection of graphical and statistical model evaluation analyses. The Model Evaluation Toolkit was originally developed under the FP7 <a href="https://cordis.europa.eu/project/id/241557" title="Access PASODOBLE website" target="_blank">PASODOBLE</a> project and recently extended under the SPF Clean Air Programme <a href="https://cerc.co.uk/environmental-research/urban-air-quality.html#MAQS-Health" title="Go to MAQS-Health page">MAQS-Health</a> project. It makes use of <a href="https://davidcarslaw.github.io/openair/" title="Access Openair website" target="_blank">Openair</a> functions and can additionally generate the statistics and graphics recommended by FAIRMODE. The image shows polar plots of the measured and modelled variation of hourly average NO<sub>x</sub> concentrations (units ppb) with wind speed and direction at the Schildhornstrasse site in Berlin produced using the Model Evaluation Toolkit, as published in <a href="https://doi.org/10.1016/j.envsoft.2022.105455" title="Access article online" target="_blank">Seaton et al.</a> (2022).</p><br /><br /><img src="http://www.cerc.co.uk/about-us/assets/news/CERC20240130_ADMLC.png" width="315" height="400"/> http://www.cerc.co.uk/about-us/news.php?newsitem=410#news410 Tue, 30 Jan 2024 00:00:00 GMT Published recommendations for use of NWP meteorological data in dispersion modelling http://www.cerc.co.uk/about-us/news.php?newsitem=409#news409 <p><a href="https://cerc.co.uk/" title="Go to CERC homepage">CERC</a>&#39;s investigation of the impacts of using modelled (NWP) meteorological data on dispersion modelling outcomes has now been <a href="https://admlc.files.wordpress.com/2024/01/d5.2-finalreport-jan2024.pdf" title="Access report online" target="_blank">published</a> by the Atmospheric Dispersion Modelling Liaison Committee (<a href="https://admlc.com/" title="Access ADMLC website" target="_blank">ADMLC</a>). The project was commissioned to examine the effects of NWP model grid resolution on dispersion modelling, in both regulatory and emergency planning contexts, and to make recommendations for the use of NWP data in dispersion modelling.</p> <p>The report begins with an evaluation of NWP outputs in comparison with meteorological observations at eight UK sites (shown on the map). This is followed by a comparison of <a href="https://www.cerc.co.uk/ADMS" title="Go to ADMS page">ADMS</a> and <a href="https://www.epa.gov/scram/air-quality-dispersion-modeling-preferred-and-recommended-models#aermod" title="Access US EPA website" target="_blank">AERMOD</a> dispersion outcomes for idealised sources at four locations with observed and modelled meteorological data. The report also includes an investigation of the interaction between fine-scale NWP data and local flowfield modelling using the <a href="https://www.cerc.co.uk/FLOWSTAR" title="Go to FLOWSTAR Energy page">FLOWSTAR</a> model for flow over complex terrain in ADMS. Finally, there are results from the UK Health Security Agency (<a href="https://www.gov.uk/government/organisations/uk-health-security-agency" title="Access UK Health Security Agency website" target="_blank">UKHSA</a>) investigation of the effects of NWP grid resolution on the outcomes of probabilistic accident consequence modelling with the <a href="https://www.ukhsa-protectionservices.org.uk/pace" title="Access UKHSA website" target="_blank">PACE</a> model.</p> <p>Interim results from the project were presented at CERC&#39;s ADMS <a href="https://www.cerc.co.uk/UGM" title="Go to UGM page">User Group Meetings</a> in 2022 and 2023; the presentations are available from the <a href="https://www.cerc.co.uk/UserArea" title="Go to User Area page">User Area</a>. Christina Hood from CERC will also present the sensitivity of ADMS and AERMOD dispersion outputs to varying input meteorological data at the international conference on Harmonisation within Atmospheric Dispersion Modelling for Regulatory Purposes (<a href="https://harmo22.ut.ee/node/40334" title="Access Harmo 22 website" target="_blank">Harmo</a>) in June 2024.</p><br /><br /><img src="http://www.cerc.co.uk/about-us/assets/news/CERC20240124_NWP_met_data.png" width="305" height="420"/> http://www.cerc.co.uk/about-us/news.php?newsitem=409#news409 Wed, 24 Jan 2024 00:00:00 GMT Street-scale pollution maps for Ireland now available http://www.cerc.co.uk/about-us/news.php?newsitem=407#news407 <p>Results from <a href="https://www.cerc.co.uk/" title="Go to CERC Homepage">CERC</a>&#39;s modelling of street-scale air pollution in Ireland have been published as part of the Irish Environmental Protection Agency (<a href="https://www.epa.ie/" title="Access Irish EPA website" target="_blank">EPA</a>) report &#39;<a href="https://www.epa.ie/publications/monitoring--assessment/air/air-quality-in-ireland-2022.php" title="Access Irish EPA website" target="_blank">Air quality in Ireland 2022</a>&#39;. The full CERC <a href="https://www.epa.ie/publications/monitoring--assessment/air/20230710-CERC-EPA-Eire-AQ-modelling---Final.pdf" title="Download linked document" target="_blank">report</a> with high-resolution maps for a wider range of regulated air pollutants is also available. The predicted concentrations were evaluated with measured concentrations with generally good performance for both years at all site types, meeting the <a href="https://fairmode.jrc.ec.europa.eu/" title="Access FAIRMODE website" target="_blank">FAIRMODE</a> model quality objectives. Modelled concentrations were compared to current Irish <a href="https://www.irishstatutebook.ie/eli/2011/si/180/made/en/print" title="Access Irish Statue Book website" target="_blank">air quality standards</a> air quality standards, with exceedances generally associated with the major road network. Most of Ireland meets the World Health Organisation (WHO) <a href="https://www.who.int/publications/i/item/9789240034228" title="Access WHO website" target="_blank">guideline</a> for annual average NO<sub>2</sub> concentrations, with exceedences in urban areas, while a substantial proportion of Ireland does not meet the lowest guideline for annual average PM<sub>2.5</sub> concentrations.</p> <p>CERC were commissioned by the Irish EPA to provide street-scale modelling of Ireland for 2018 and 2019. This used the Multi-model Air Quality System (<a href="https://cerc.co.uk/environmental-software/assets/data/doc_userguides/CERC_MAQS_Coupled_System_User_Guide.pdf" title="Download linked document">MAQS</a>) coupled system (developed by CERC) to link regional scale hourly pollution predictions from the <a href="https://www.emep.int/mscw/" title="Access EMEP website" target="_blank">EMEP</a> model with local <a href="https://www.cerc.co.uk/Urban" title="Go to ADMS-Urban page">ADMS-Urban</a> modelling. The UK Centre for Ecology & Hydrology (<a href="https://www.ceh.ac.uk/" title="Access CEH website" target="_blank">UK CEH</a>) ran the <a href="https://www.mmm.ucar.edu/models/wrf" title="Access WRF website" target="_blank">WRF</a> mesoscale meteorological model and EMEP chemical transport model with 1 km horizontal grid resolution over Ireland. CERC carried out detailed road traffic emissions calculations in <a href="https://www.cerc.co.uk/EMIT" title="Go to EMIT website">EMIT</a> based on traffic flow data supplied by the National Transport Authority (<a href="https://www.nationaltransport.ie/" title="Access National Transport Authority website" target="_blank">NTA</a>) and Transport Infrastructure Ireland (<a href="https://www.tii.ie/" title="Access TII website" target="_blank">TII</a>). Gridded emissions from non-traffic sources were obtained from the <a href="https://projects.au.dk/mapeire/spatial-results/download" title="Access MapEire website" target="_blank">MapEire</a> inventory.</p> <p>Street canyon effects on dispersion were included in major urban areas. Three major road tunnels were also included in the modelling using the ADMS-Urban <a href="https://cerc.co.uk/environmental-software/assets/data/doc_techspec/P35_01.pdf" title="Download linked doucment">tunnels module</a>, with high concentrations noticeable around the portals of the Dublin Port tunnel. The model output is at hourly temporal resolution and irregular spatial resolution. The <a href="https://cerc.co.uk/environmental-software/assets/data/doc_userguides/CERC_MAQS_PostProcessor_UserGuide.pdf" title="Download linked document">MAQS PostProcessor</a> utility was used to calculate annual average and high percentile hourly concentrations on regular grids for plotting, at 20 m resolution for whole country maps and 5 m resolution for individual cities.</p> <p>The 2019 mapped concentrations were uploaded to the recent FAIRMODE <a href="https://aqm.jrc.ec.europa.eu/ecmaps/" title="Access European Composite Map Database website" target="_blank">composite mapping exercise</a>, which combines and assesses modelling results for different parts of Europe. <a href="https://fairmode.jrc.ec.europa.eu/document/fairmode/event/presentation/athens-technical-2023/20231005_WG2_CompMap.pdf" title="Download linked document" target="_blank">Preliminary results</a> from this exercise were presented in October 2023, with CERC&#39;s modelling results showing good performance in the &#39;high resolution, unassimilated&#39; category. Presentations describing the Irish <a href="https://cerc.co.uk/environmental-software/assets/data/doc_presentations/CERC_2023_UGM_Street-scale_emissions_inventory.pdf" title="Download linked document">emissions inventory development</a> and <a href="https://cerc.co.uk/environmental-software/assets/data/doc_presentations/CERC_2023_UGM_Coupled_system_modelling.pdf" title="Download linked document">coupled system modelling</a> were given by CERC at the 2023 ADMS-Urban and ADMS-Roads User Group Meeting.</p> <br /><br /><img src="http://www.cerc.co.uk/about-us/assets/news/CERC20231218_street_scale_pollution.png" width="460" height="325"/> http://www.cerc.co.uk/about-us/news.php?newsitem=407#news407 Tue, 19 Dec 2023 00:00:00 GMT Review of methods for monitoring and modelling air quality http://www.cerc.co.uk/about-us/news.php?newsitem=408#news408 <p><a href="https://www.cerc.co.uk/" title="Go to CERC Homepage">CERC</a> recently contributed modelling expertise to a comprehensive <a href="https://www.gov.uk/government/organisations/environment-agency" title="Access Environment Agency website" target="_blank">Environment Agency</a> (EA) <a href="https://www.gov.uk/government/publications/options-for-air-quality-research-monitoring-modelling-and-integration" title="Access Environment Agency website" target="_blank">report</a> that reviewed methods for air quality monitoring and modelling, and their integration. The report examines both well-established techniques already employed by the EA, such as <a href="https://www.cerc.co.uk/ADMS" title="Go to ADMS page">Gaussian plume dispersion</a> for air quality modelling, and emerging technologies, such as data assimilation and machine learning for integration. Factors such as spatial-temporal resolution, cost considerations, the maturity of the technique, and requisite user expertise are evaluated. The report provides practical recommendations on the suitability of different air quality assessment techniques for EA requirements, including their <a href="https://environmentagencycareers.co.uk/careers/environment-and-regulation/?sType=ea_landingpage" title="Access Environment Agency website" target="_blank">regulatory responsibilities</a>.</p> <p>The report is a significant collaborative effort engaging experts across governmental, industrial and academic sectors, with specialist knowledge in emission measurements, air quality measurements, and modelling – many thanks to <a href="https://www.aqconsultants.co.uk/" title="Access AQC website" target="_blank">AQC</a>, <a href="https://aether-uk.com/" title="Access Aether website" target="_blank">Aether</a> and all involved! It offers valuable insight for those interested in the rapidly evolving landscape of air quality techniques.</p> <br /><br /><img src="http://www.cerc.co.uk/about-us/assets/news/CERC20231218_review.png" width="300" height="427"/> http://www.cerc.co.uk/about-us/news.php?newsitem=408#news408 Mon, 18 Dec 2023 00:00:00 GMT 2023 ADMS User Group Meetings – presentations are available to download http://www.cerc.co.uk/about-us/news.php?newsitem=406#news406 <p>Following this year’s ADMS User Group Meetings, which took place in York on 29-30 November, electronic copies of the presentations are now available to <a href="https://www.cerc.co.uk/user-area/usergrouppresentations.html" title="User Group presentations" target="_blank">download</a> from the CERC website User Area. Model users with a valid support contract, including all annual licence holders, are entitled to register for password-protected access to the User Area. To register, or to be reminded of your password, <a href="https://www.cerc.co.uk/software-support/user-area.php" title="CERC user area" target="_blank">click here</a>.</p><br /><br /><img src="http://www.cerc.co.uk/about-us/assets/news/CERC20231212_UGM_presentations.jpg" width="400" height="224"/> http://www.cerc.co.uk/about-us/news.php?newsitem=406#news406 Tue, 12 Dec 2023 00:00:00 GMT Estimating emissions from concentration measurements: inverse dispersion modelling report published http://www.cerc.co.uk/about-us/news.php?newsitem=405#news405 <p>The <a href="https://www.gov.uk/government/organisations/environment-agency" title="Access Environment Agency website" target="_blank">Environment Agency</a> recently commissioned <a href="https://cerc.co.uk/" title="Go to CERC homepage">CERC</a> and <a href="https://www.aqconsultants.co.uk/" title="Access AQC website" target="_blank">AQC</a> to investigate inverse dispersion modelling methods which could be applied to fugitive (uncontrolled) sources of methane. Inverse dispersion modelling methods allow the estimation of unknown emission rates from concentration measurements. Improving estimates of methane emissions from sources such as landfill sites is important for quantifying greenhouse gas impacts.</p> <p>The report from this project has now been <a href="https://www.gov.uk/government/publications/quantifying-methane-emissions-using-inverse-dispersion-modelling" title="Access GOV.UK website" target="_blank">published online</a>. It includes: a literature review of different inverse dispersion modelling methods; an assessment of the applicability of inverse dispersion modelling methods to different EA-regulated facilities; a study testing four inverse dispersion modelling methods with measurements from three landfill sites; and recommendations for future use of inverse dispersion modelling.</p> <p>CERC have previously developed and implemented an inverse dispersion modelling approach for improving estimates of <a href="https://doi.org/10.1504/IJEP.2019.104878" title="Access article online" target="_blank">urban emissions</a>. For this project we developed a new &#39;modified Bayesian&#39; inverse modelling technique, due to the short timescale of the plume transect measurements. Measurements at 1 second intervals capture the instantaneous rather than ensemble plume. The concentration <a href="https://cerc.co.uk/environmental-software/assets/data/doc_techspec/P13_01.pdf" title="Download linked document">fluctuations</a> module in <a href="https://www.cerc.co.uk/ADMS" title="Go to ADMS page">ADMS</a> was used to represent the short-term distribution of concentrations, with inverse modelling applied to the peak modelled and measured concentrations only.</p> <p>The <a href="https://www.cerc.co.uk/about-us/assets/news/CERC20231206_inverse_dispersion_large.png" title="View larger image">image</a> shows an example of transect measurements of acetylene (C2H2) tracer gas. The 1 second measured data displays a narrow peak, while standard modelling (&#39;modelled&#39;) predicts a wider plume with a lower peak concentration. The maximum model prediction of 1 second concentrations from the fluctuations module (&#39;modelled fluctuations maximum&#39;, also showing standard deviation error bars) gives good agreement with the peak measurement. Methane measurements from the same transect were used in the inverse modelling study.</p> <br /><br /><img src="http://www.cerc.co.uk/about-us/assets/news/CERC20231206_inverse_dispersion_small.png" width="285" height="230"/> http://www.cerc.co.uk/about-us/news.php?newsitem=405#news405 Wed, 06 Dec 2023 00:00:00 GMT PhD Opportunity to Explore the Pollution-Climate-Health Dilemma http://www.cerc.co.uk/about-us/news.php?newsitem=404#news404 <p><a href="https://cerc.co.uk/" title="Go to CERC homepage">CERC</a> is a partner for a <a href="https://www.envision-dtp.org/2023/the-pollution-climate-health-dilemma-cleaner-air-but-poorer-health-outcomes-under-a-changing-climate/" title="Access Envision website" target="_blank">PhD studentship</a> harnessing data and air pollution modelling to examine the complex interactions between pollution, climate, and health. The PhD project will delve into the issue of why the public is perceiving a decline in their health and wellbeing due to exposure to air pollutants when, in reality, anthropogenic air pollution emissions have significantly decreased over the last 30 years. One potential factor contributing to this dilemma could be the influence of climate change and the evolving nature of emissions.</p> <p>The studentship will be awarded by <a href="https://www.envision-dtp.org/" title="Access Envision website" target="_blank">Envision</a>, a doctoral training program which fosters collaboration between researchers, industry partners and NGOs to cultivate a new generation of exceptional environmental scientists. The selected student will benefit from supervision of a team of interdisciplinary experts throughout the PhD journey, including an NHS clinician, and receive training from CERC and <a href="https://rdscientific.com/" title="Access RDScientific website" target="_blank">RDScientific</a>.</p> <p>If this rewarding and challenging project appeals to you please consider applying <a href="https://www.envision-dtp.org/2023/the-pollution-climate-health-dilemma-cleaner-air-but-poorer-health-outcomes-under-a-changing-climate/" title="Access Envision website" target="_blank">here</a>. Or for further details please contact Professor Sarah Metcalfe, <a href="mailto:sarah.metcalfe@nottingham.ac.uk" title="Email Prof. S Metclafe">sarah.metcalfe@nottingham.ac.uk</a> or Professor Duncan Whyatt, <a href="mailto:d.whyatt@lancaster.ac.uk" title="Email Prof. D Whyatt">d.whyatt@lancaster.ac.uk</a>.</p><br /><br /><img src="http://www.cerc.co.uk/about-us/assets/news/CERC20231205_PhD_post.jpg" width="340" height="340"/> http://www.cerc.co.uk/about-us/news.php?newsitem=404#news404 Tue, 05 Dec 2023 00:00:00 GMT Exploring Particulate Deposition Modelling at the ADMLC Seminar http://www.cerc.co.uk/about-us/news.php?newsitem=403#news403 <p>CERC’s director, Dr David Carruthers, shared his insights into particulate deposition modelling using ADMS at the recent <a href="https://admlc.com/seminar-4th-october-2023/" title="Go to seminar webpage">seminar</a> organised by the <a href="https://admlc.com/" title="Go to ADMLC website">Atmospheric Dispersion Modelling Liaison Committee</a> (ADMLC) on dry deposition of reactive chemicals. <a href="https://admlc.files.wordpress.com/2023/10/20231004_admlc_dc_adms_deposition_final2.pdf" title="Access David's presentation">David’s presentation</a> explored the complexities of capturing the impact of spatial and temporal variation on modelled deposition, using a <a href="https://link.springer.com/article/10.1023/B:WAFO.0000028373.02470.ba" title="Fowler et al. 2004">copper deposition dataset</a> in the West Midlands as an example. Deposition is a critical topic that spans the environmental, defence and industrial safety sectors. This seminar brought together experts from these fields to collaborate, share knowledge and discuss approaches to modelling and measuring deposition. Access all the presentations from the day <a href="https://admlc.com/seminar-4th-october-2023/" title="Access seminar presentations">here</a>. </p> <p>This discussion will be continued in the forthcoming <a href="https://www.cerc.co.uk/UGMs" title="Go to ADMS User Group Meeting webpage">ADMS User Group Meeting</a>, with Dr Victoria Hamilton giving a presentation that focuses on practical deposition model applications. This annual face-to-face meeting provides a great opportunity to learn more about the latest ADMS model advances and provides opportunities to network with other experts in the field – we hope to see you there!</p><br /><br /><img src="http://www.cerc.co.uk/about-us/assets/news/CERC20231117_ADLMC.png" width="450" height="189"/> http://www.cerc.co.uk/about-us/news.php?newsitem=403#news403 Fri, 17 Nov 2023 00:00:00 GMT