CERC news http://www.cerc.co.uk CERC news en-us 2018 Cambridge Environmental Research Consultants Ltd.Mon, 09 Jul 2018 00:00:00 GMT Air quality modelling to support Runnymede&#39;s Local Plan http://www.cerc.co.uk/about-us/news.php?newsitem=281#news281 <p><a href="https://www.runnymede.gov.uk/" title="Access Runnymede Borough Council website" target="_blank">Runnymede Borough Council</a> is preparing a Local Plan to guide development in Runnymede in Surrey, south west of London. The <a href="http://www.cerc.co.uk/consultancy" title="Go to Consultancy page">CERC Consultancy</a> team carried out air dispersion modelling using <a href="http://www.cerc.co.uk/Urban" title="Go to ADMS-Urban page">ADMS-Urban</a> to identify the baseline air quality profile across the area and to assess air quality for future scenarios (2030 and 2036), with and without developments associated with the Local Plan in place.</p> <p>The main source of air pollution in Runnymede is road traffic emissions. The Council has declared two Air Quality Management Areas (AQMAs) due to annual average NO<sub>2</sub> concentrations exceeding the Air Quality Objective: along the M25 and in Addlestone town centre.</p> <p>Modelling for the base year, 2015, showed exceedences of the annual average NO<sub>2</sub> Air Quality Objective (AQO) along the M25 and at building fa&ccedil;ades in Chertsey. In the modelled future scenarios, no exceedences of the AQOs were calculated. This reflects the expected large reduction in NO<sub>2</sub> concentrations due to improvements in engine technology, which lead to a fall in traffic exhaust emissions.</p> <p>The health impact of air quality on health in Runnymede was assessed by calculating the number of attributable deaths and corresponding life-years lost due to concentrations of PM<sub>2.5</sub> and NO<sub>2</sub>. The difference in life years lost with and without the Local Plan in place was very small, reflecting the low concentrations predicted across the Borough.</p> <br /><br /><img src="http://www.cerc.co.uk/about-us/assets/news/CERC20180709_Runnymede1.jpg" width="332" height="349"/><br /><br /><img src="http://www.cerc.co.uk/about-us/assets/news/CERC20180709_Runnymede2.jpg" width="486" height="344"/> http://www.cerc.co.uk/about-us/news.php?newsitem=281#news281 Mon, 09 Jul 2018 00:00:00 GMT Registration is now open for the ADMS User Group Meetings, 7-8 November 2018, Edinburgh http://www.cerc.co.uk/about-us/news.php?newsitem=280#news280 <p>You can <a href="http://www.cerc.co.uk/software-support/user-group-meetings.php" title="Go to UGM page">register now</a> for the 2018 User Group Meetings, which will be held in Edinburgh on 7<sup>th</sup> and 8<sup>th</sup> November.</p> <ul><li>ADMS 5 User Group Meeting: 7<sup>th</sup> November</li> <li>ADMS-Urban and ADMS-Roads User Group Meeting: 8<sup>th</sup> November</li></ul> <p>These meetings will include the usual mix of presentations by CERC staff and software users and are the ideal opportunity to hear the latest news and advice on new model features. Users with a valid support contract are entitled to one or more delegate places free of charge depending on the type of licence held. Please <a href="http://cerc.co.uk/about-us/contact-us.html" title="Go to Contact us page">contact CERC</a> if there is a topic you would like to be covered at one of the meetings or if you would like to give a &#39;user view&#39; presentation. More details will be published later in the year. Registration will remain open until 29<sup>th</sup> October 2018.</p> http://www.cerc.co.uk/about-us/news.php?newsitem=280#news280 Tue, 03 Jul 2018 00:00:00 GMT &#145;Hyperlocal&#146; air mapping in London with smart sensors and Google Street View cars http://www.cerc.co.uk/about-us/news.php?newsitem=279#news279 <p>The Mayor of London, Sadiq Khan, and C40 &#45; a network of cities committed to bold action on climate change &#45; have launched a <a href="http://www.cerc.co.uk/about-us/assets/news/CERC20180621_HyperLocal_Pilot_press_release.pdf" target="_blank" >cutting-edge new project</a> to better understand Londoners&apos; exposure to air pollution around the city. Sensors measuring harmful pollution in tens of thousands of locations will be combined with air quality modelling to produce hyperlocal air quality mapping.</p> <p>From July, new fixed and mobile sensors will be rolled out across London&apos;s streets. 100 fixed sensors will be fitted to lampposts and buildings in the worst affected areas and sensitive locations, and two dedicated Google Street View cars will be driving across the city, mapping air pollution at an unprecedented level of detail. CERC&apos;s renowned <a href="http://www.cerc.co.uk/ADMSUrban" target="_blank" >ADMS-Urban model</a> will be used together with the sensor data to generate hyper-local air quality mapping both for nowcasts and forecasts, and for policy studies.</p> <p>The project will be run by a team of air quality experts led by the charity Environmental Defense Fund Europe, in partnership with Air Monitors Ltd., Google Earth Outreach, CERC, University of Cambridge, National Physical Laboratory, and the Environmental Defense Fund team in the United States. The <a href="http://www.cerc.co.uk/about-us/assets/news/CERC20180621_HyperLocal_Pilot_press_release.pdf" target="_blank" >press release</a> gives more information on the project.</p> http://www.cerc.co.uk/about-us/news.php?newsitem=279#news279 Thu, 21 Jun 2018 00:00:00 GMT Clean Air Day - 21st June http://www.cerc.co.uk/about-us/news.php?newsitem=278#news278 <p>On Clean Air Day on 21<sup>st</sup> June organisations across the UK will be taking part in initiatives to highlight the effect that breathing polluted air has on our health and to promote cleaner and healthier ways of getting around. We will be doing our bit on Clean Air Day to make Cambridge air cleaner - 81% of CERC staff will be cycling or walking to work and 19% will be using public transport to get to work. To find out more about Clean Air Day events in your area, go to <a href="http://www.cleanairday.org.uk" title="Access Clean Air Day website" target="_blank">www.cleanairday.org.uk</a>, or tweet @cleanairdayuk #CleanAirDay to join in the conversation.</p><br /><br /><img src="http://www.cerc.co.uk/about-us/assets/news/CERC20180620_cleanairday.jpg" width="300" height="150"/> http://www.cerc.co.uk/about-us/news.php?newsitem=278#news278 Wed, 20 Jun 2018 00:00:00 GMT Assessment of the FAIRMODE air quality model benchmarking methodology http://www.cerc.co.uk/about-us/news.php?newsitem=276#news276 <p><a href="http://www.cerc.co.uk" title="Go to CERC homepage">CERC</a> are co-authors in a recent publication which analyses the strengths and weaknesses of the FAIRMODE benchmarking approach of European-wide, regional and urban scale air quality model applications.</p> <p>The &#39;Forum for air quality modelling in Europe&#39; (<a href="http://fairmode.jrc.ec.europa.eu/" title="Access FAIRMODE website" target="_blank">FAIRMODE</a>) is an EU initiative created in 2007 to bring together air quality modellers and users to promote and support the harmonised use of models across the EU, with emphasis on model application under the European Air Quality Directive.</p> <p>Dr Jenny Stocker from CERC has attended the FAIRMODE Technical Meetings since 2011, primarily contributing to the <a href="http://fairmode.jrc.ec.europa.eu/wg1.html" title="Access FAIRMODE website" target="_blank">Assessment Working Group</a>. A procedure for benchmarking and evaluating EU Air Quality Directive (AQD) modelling applications has been developed within the FAIRMODE framework, leading to free software known as <a href="http://aqm.jrc.ec.europa.eu/DELTA/" title="Access DELTA Tool website" target="_blank">The DELTA Tool</a>. Jenny has co-authored the publication: &#39;<a href="https://link.springer.com/article/10.1007/s11869-018-0554-8" title="Access article online" target="_blank">Strengths and weaknesses of the FAIRMODE benchmarking methodology for the evaluation of air quality models</a>&#39;, which includes a SWOT analysis of the methodology based on feedback from users of the tool.</p> http://www.cerc.co.uk/about-us/news.php?newsitem=276#news276 Fri, 11 May 2018 00:00:00 GMT ADMS-Urban RML to be used to model Delhi air quality http://www.cerc.co.uk/about-us/news.php?newsitem=275#news275 <p><a href="http://www.cerc.co.uk" title="Go to CERC homepage">CERC</a> are partners in the &#39;Process analysis, observations and modelling - Integrated solutions for cleaner air for Delhi&#39; (<a href="http://www.urbanair-india.org/promote" title="Access Urbanair-India website" target="_blank">PROMOTE</a>) project, collaborating with six UK universities and five Indian research institutes. This project will investigate the interactions between meteorological processes such as winter fog events and poor air quality, as well as the relative importance of local and regional pollutant emissions and possible mitigation approaches. It is part of the wider <a href="http://www.urbanair-india.org/" title="Access Urbanair-India website" target="_blank">Atmospheric Pollution and Human Health in an Indian Megacity</a> programme, jointly funded by the Natural Environment Research Council (NERC), the Medical Research Council (MRC), the Newton-Bhabha Fund, the Ministry of Earth Sciences (MoES) and the Ministry of Science and Technology Department of Biotechnology.</p> <p><a href="http://www.cerc.co.uk/ADMS-Urban" title="Go to ADMS-Urban model page">ADMS-Urban</a> will be used to model street-scale air quality in Delhi during the PROMOTE project. It will be coupled to the regional <a href="https://ruc.noaa.gov/wrf/wrf-chem/" title="Access WRF-Chem website" target="_blank">WRF-Chem</a> and <a href="https://www.cmascenter.org/cmaq/" title="Access CMAQ website" target="_blank">CMAQ</a> models using the <a href="http://www.cerc.co.uk/RML" title="Go to ADMS-Urban RML page">ADMS-Urban Regional Model Link</a> (RML) system in order to investigate the interactions of regional and local effects. Preliminary un-coupled ADMS-Urban modelling results were presented at the project science meeting on 24<sup>th</sup> April 2018. The project <a href="http://cerc.co.uk/about-us/assets/news/CERC20180430_PROMOTE_brochure.pdf" target="_blank" title="View image">brochure</a> gives more information about the full aims of the project and activities of other project partners.</p> <br /><br /><img src="http://www.cerc.co.uk/about-us/assets/news/CERC20180430_DelhiTraffic.png" width="270" height="225"/><br /><br /><img src="http://www.cerc.co.uk/about-us/assets/news/CERC20180430_DelhiAirLogo.png" width="270" height="225"/> http://www.cerc.co.uk/about-us/news.php?newsitem=275#news275 Mon, 30 Apr 2018 00:00:00 GMT airTEXT air quality alerts for Riga http://www.cerc.co.uk/about-us/news.php?newsitem=274#news274 <p>The World Health Organisation warns that air pollution is a major global cause of death and disease, and in sensitive people short-term exposure can lead to reduced lung function, respiratory infections and aggravated asthma. Air pollution levels can vary greatly in just a few hours. Residents of Riga now benefit from a new free service <a href="http://www.rigaairtext.lv/" title="Access Riga airTEXT website" target="_blank">Riga <em>air</em>TEXT</a>, launched on 27 February at Riga City Hall. Riga <em>air</em>TEXT informs the public with free air quality alerts by text message and emails. Air quality forecasts up to three days ahead are available online at <a href="http://www.rigaairtext.lv" title="Access Riga airTEXT website" target="_blank">www.rigaairtext.lv</a> and in a free phone app. Information is also available from the Riga <em>air</em>TEXT Facebook and Twitter pages.</p> <p>Now thanks to Riga <em>air</em>TEXT the public can prepare in advance for short-term periods of poor air quality. People with asthma or heart disease can take positive steps, like keeping an asthma inhaler nearby or avoiding strenuous outdoor activity.</p> <p>A cutting-edge computer system at <a href="http://www.cerc.co.uk/" title="Go to CERC homepage">CERC</a> automatically combines state-of-the-art satellite observations, air quality forecasts for Europe from the EU <a href="https://atmosphere.copernicus.eu/" title="Access Copernicus EU website" target="_blank">Copernicus Atmosphere Monitoring Service</a> (CAMS) and ultra-high-resolution air quality forecasts for Riga from the world-leading system <a href="http://www.cerc.co.uk/admsurban" title="Go to ADMS-Urban model page">ADMS-Urban</a>. ADMS-Urban simulates pollution dispersion and chemical reactions in large urban areas, accounting for thousands of individual sources and the complex air flow produced by buildings and streets. The result is a highly detailed <a href="http://cerc.co.uk/about-us/assets/news/CERC20180423_RigaairTEXT_large.png" title="View image" target="_blank">map</a> of street-level air pollution, with more than 100,000 data points.</p> <p>Riga <em>air</em>TEXT has been developed by UK and Latvian scientists from CERC and <a href="http://www.environment.lv/" title="Access ELLE website" target="_blank">ELLE</a> with financial support from the Copernicus Atmosphere Monitoring Service (CAMS). Riga City Council and the Latvian Ministry of Environment are working closely with the Riga <em>air</em>TEXT team to ensure that the service meets the needs of the public.</p> <p>A short video about Riga <em>air</em>TEXT has been produced by CAMS; to watch this please <a href="https://www.youtube.com/watch?v=WJx2JNeYU5I" title="Access Youtube website" target="_blank">click here</a>.</p> <p>For more information on <em>air</em>TEXT, ADMS-Urban or forecasting services please <a href="http://www.cerc.co.uk/contact" title="Go to Contact us page">contact CERC</a>.</p> <br /><br /><img src="http://www.cerc.co.uk/about-us/assets/news/CERC20180423_RigaairTEXT_small.png" width="390" height="317"/> http://www.cerc.co.uk/about-us/news.php?newsitem=274#news274 Mon, 23 Apr 2018 00:00:00 GMT 2018 ADMS User Group Meetings to be held in Edinburgh, 7-8 November http://www.cerc.co.uk/about-us/news.php?newsitem=273#news273 <p>The 2018 User Group Meetings will be held in Edinburgh on 7<sup>th</sup> and 8<sup>th</sup> November.</p> <ul><li>ADMS 5 User Group Meeting: Wednesday 7<sup>th</sup> November</li> <li>ADMS-Urban and ADMS-Roads User Group Meeting: Thursday 8<sup>th</sup> November</li></ul> <p>These meetings will include the usual mix of presentations by CERC staff and software users and are the ideal opportunity to hear the latest news and advice on new model features. Users with a valid support contract are entitled to a number of free or reduced-rate delegate places depending on the type of licence held. Please <a href="http://cerc.co.uk/about-us/contact-us.html" title="Go to Contact us page">contact CERC</a> if there is a topic you would like to be covered at one of the meetings or if you would like to give a &#39;user view&#39; presentation. More details will be published later in the year; registration will open online in the Summer.</p> http://www.cerc.co.uk/about-us/news.php?newsitem=273#news273 Tue, 17 Apr 2018 00:00:00 GMT ADMS-Urban Temperature and Humidity model study of London&#39;s Olympic parkland http://www.cerc.co.uk/about-us/news.php?newsitem=272#news272 <p>Dr Jenny Stocker (<a href="http://www.cerc.co.uk/" title="Go to CERC homepage">CERC</a>) co-authored a recently published journal article that explores the sensitivities of the <a href="http://www.cerc.co.uk/environmental-research/urban-heat-island.html" title="Go to Urban heat island page">ADMS-Urban Temperature and Humidity</a> model predictions of local urban temperatures to input parameters, using London&#39;s Olympic parkland as a case study. In particular, the land use parameters were modified to reflect building materials as well as functional types, causing up to 3&#176;C differences in modelled temperatures; also, the sensitivity of local temperatures to wind speed was assessed. Further work will be carried out to evaluate the input parameters against temperature measurements in Kuala Lumpur under the project <a href="http://www.cerc.co.uk/environmental-research/smart-cities.html#Newton-Ungku" title="Go to Smart cities page">Disaster Resilient Cities: Forecasting Local Level Climate Extremes and Physical Hazards for Kuala Lumpur</a>. The paper is freely available <a href="https://www.sciencedirect.com/science/article/pii/S1877705817329594" title="Access article online" target="_blank">online</a>.</p> <p>References and links to more publications by CERC authors are available <a href="http://cerc.co.uk/environmental-software/CERC-coauthor-publications.html" title="Go to CERC Co-author publications page">here</a> while publications from other researchers using CERC models are listed <a href="http://cerc.co.uk/environmental-software/CERC-software-publications.html" title="Go to CERC Software Publications page">here</a>.</p> <br /><br /><img src="http://www.cerc.co.uk/about-us/assets/news/CERC20180410_Urban_heat_island.png" width="326" height="290"/> http://www.cerc.co.uk/about-us/news.php?newsitem=272#news272 Tue, 10 Apr 2018 00:00:00 GMT Assessment of Clean Air Zones http://www.cerc.co.uk/about-us/news.php?newsitem=271#news271 <p>Under the UK government&#39;s July 2017 <a href="https://www.gov.uk/government/publications/air-quality-plan-for-nitrogen-dioxide-no2-in-uk-2017" title="Access UK Gov website" target="_blank">NO<sub>2</sub> plan</a>, 23 local authorities are required to assess options such as Clean Air Zones (CAZ) to reduce NO<sub>2</sub> levels in their areas. Last month the High Court <a href="https://www.judiciary.gov.uk/wp-content/uploads/2018/02/clientearth-no3-final-judgmentdocx.pdf" title="Access document online" target="_blank">ruled</a> that a further 33 local authorities will need to study proposals to improve air quality. The government has <a href="https://hansard.parliament.uk/commons/2018-02-22/debates/93B33A3E-BA65-42B4-BDC3-8DE2733961D6/AirQuality" title="Access UK Parliament Hansard website" target="_blank">begun working</a> with these local authorities.</p> <p>Robust assessments will be necessary to deliver these projects. CERC offer our world-leading model <a href="http://www.cerc.co.uk/urban" title="Go to ADMS-Urban model page">ADMS-Urban</a> which is designed for assessing air quality interventions such as <a href="http://www.cerc.co.uk/caz" title="Go to Clean Air Zone page">Clean Air Zones</a>. For instance, ADMS-Urban is being used by</p> <ul><li>Transport for Greater Manchester to model CAZ options</li> <li>Glasgow City Council and SEPA to <a href="http://www.cerc.co.uk/about-us/news.php?newsitem=270&utm_source=dlvr.it&utm_medium=twitter#news270" title="Go to News Item">model</a> Low Emissions Zone proposals for bus corridors in the city centre (see map).</li></ul> <p><a href="http://www.cerc.co.uk/contact" title="Go to Contact us page">Contact CERC</a> now for</p> <ul><li>ADMS air quality software for local authorities, consultancies and other users</li> <li>Consultancy services for the assessment of air quality interventions</li> <li>Training from experts in the use of our software for these assessments</li></ul> <br /><br /><img src="http://www.cerc.co.uk/about-us/assets/news/CERC20180323_Assessment_of_CAZ.jpg" width="422" height="400"/> http://www.cerc.co.uk/about-us/news.php?newsitem=271#news271 Fri, 23 Mar 2018 00:00:00 GMT SEPA assess Glasgow Low Emission Zone using ADMS-Urban http://www.cerc.co.uk/about-us/news.php?newsitem=270#news270 <p>SEPA are working with Glasgow City Council in considering a Low Emission Zone for bus corridors in the city centre. They are using <a href="http://www.cerc.co.uk" title="Go to CERC homepage">CERC</a>&#39;s world-leading <a href="http://www.cerc.co.uk/Urban" title="Go to ADMS-Urban model page">ADMS-Urban</a> model, which includes street-scale to city-wide scale modelling, advanced treatments of airflow, turbulence and dispersion within the city taking account of the effect of buildings and street canyons, chemical reactions and the mixing of pollution due to traffic.</p> <p>As described in <a href="http://www.parliament.scot/parliamentarybusiness/105527.aspx" title="Access linked document" target="_blank">evidence</a> to the Scottish Parliament air quality committee, the ADMS-Urban output (<a href="http://cerc.co.uk/about-us/assets/news/CERC20180302_Glasgow_LEZ1large.jpg" title="View image">first image</a>) are predicted annual-mean concentrations of NO<sub>2</sub> at points around the city, with the colour indicating whether they are above (red) or below (green) the annual-mean threshold of 40&#956;g/m<sup>3</sup>.</p> <p>The <a href="http://cerc.co.uk/about-us/assets/news/CERC20180302_Glasgow_LEZ2large.jpg" title="View image">second image</a> shows good agreement between modelled air-quality concentrations for 6 sites compared with the monitored values at these sites in 2015 using the &#39;congested speed&#39; scenario. In particular the large roadside increment is well represented by the model. No model adjustment factors have been used in this project.</p> <p>Two LEZ scenarios have been investigated with ADMS-Urban and CERC&#39;s <a href="http://cerc.co.uk/EMIT" title="Go to EMIT model page">EMIT</a> emissions inventory tool: (1) assuming all buses are at EURO VI, and (2) additionally assuming diesel cars and LGVs are at Euro 6 and petrol cars and LGVs are at EURO 4 or newer. At a monitor location within the LEZ, the greatest improvement in air quality was predicted by cleaning the bus fleet, with a small additional improvement by targeting cars and LGVs. The modelling work is continuing efficiently and the Glasgow LEZ is <a href="https://news.gov.scot/news/first-low-emission-zone-for-glasgow" title="Access Scottish Government website" target="_blank">expected</a> to be in place by the end of 2018.</p><br /><br /><img src="http://www.cerc.co.uk/about-us/assets/news/CERC20180302_Glasgow_LEZ1small.jpg" width="423" height="400"/><br /><br /><img src="http://www.cerc.co.uk/about-us/assets/news/CERC20180302_Glasgow_LEZ2small.jpg" width="420" height="105"/> http://www.cerc.co.uk/about-us/news.php?newsitem=270#news270 Tue, 13 Mar 2018 00:00:00 GMT New CERC publications in the International Journal of Environment and Pollution http://www.cerc.co.uk/about-us/news.php?newsitem=268#news268 <p>Two papers from <a href="http://www.cerc.co.uk/" title="Go to CERC homepage">CERC</a> authors have recently been published in the <a href="http://www.inderscience.com/jhome.php?jcode=ijep" title="Access International Journal of Environment and Pollution website" target="_blank">International Journal of Environment and Pollution</a>, as part of a special issue from HARMO17. The first paper (<a href="http://www.inderscience.com/info/inarticle.php?artid=89410" title="Access article online" target="_blank">Stocker <em>et al</em>. 2017, doi 10.1504/IJEP.2017.10010380</a>) concerns the review of dispersion modelling of agricultural emissions with non-point sources, using the ADMS and AERMOD models to examine dispersion of emissions from typical agricultural sources and a specific case study. This expands on work originally carried out for <a href="http://www.cerc.co.uk/environmental-research/atmospheric-dispersion.html#non-point" title="Go to Atmospheric dispersion page">ADMLC</a>. A figure comparing <a href="http://www.cerc.co.uk/ADMS" title="Go to ADMS page">ADMS</a> modelled and measured ammonia concentrations (&#181;g/m<sup>3</sup>) is shown on the right.</p> <p>The second paper (<a href="http://www.inderscience.com/info/inarticle.php?artid=89427" title="Access article online" target="_blank">Smith <em>et al</em>. 2017, doi 10.1504/IJEP.2017.10010443</a>) compares the standard approach to modelling NO<sub>x</sub> plume chemistry in ADMS to a more advanced methodology by presenting validation against data for two sites in Alaska. A novel graphical approach is used to distinguish between errors in dispersion calculations, which affect both NO<sub>x</sub> and NO<sub>2</sub>, and errors in chemistry, affecting NO<sub>2</sub> only.</p> <p>References and links to more publications by CERC authors are available <a href="http://cerc.co.uk/environmental-software/CERC-coauthor-publications.html" title="Go to CERC Co-author publications page">here</a> while publications from other researchers using CERC models are listed <a href="http://cerc.co.uk/environmental-software/CERC-software-publications.html" title="Go to CERC Software Publications page">here</a>.</p><br /><br /><img src="http://www.cerc.co.uk/about-us/assets/news/CERC20180226_IJEP.png" width="390" height="350"/> http://www.cerc.co.uk/about-us/news.php?newsitem=268#news268 Mon, 26 Feb 2018 00:00:00 GMT Air quality benefits of climate action in cities around the world http://www.cerc.co.uk/about-us/news.php?newsitem=267#news267 <p>Representatives of nine cities from around the world analysed air quality and health benefits of climate actions in their cities at a workshop organised by <a href="http://www.c40.org/" title="Access C40 website" target="_blank">C40</a>, the leading global network of cities committed to addressing climate change.</p> <p>At the workshop in London, from 7<sup>th</sup> to 9<sup>th</sup> November, experts from <a href="http://www.cerc.co.uk/" title="Go to CERC homepage">CERC</a>, C40, <a href="https://www.burohappold.com/" title="Access Buro Happold website" target="_blank">Buro Happold</a> and the <a href="https://www.lshtm.ac.uk/" title="Access London School of Hygiene and Tropical Medicine website" target="_blank">London School of Hygiene and Tropical Medicine</a> worked with representatives from Istanbul, Medellin, Quezon City, Quito, Mexico City, Buenos Aires, Hanoi, Athens and Karachi. The city representatives brought details of specific climate actions to which their city is committed, including tightening vehicle emissions standards, new public transport schemes, building solar energy generation plants and reducing industrial emissions. During the event CERC&#39;s Mark Jackson and Matt Williams provided expert guidance on air quality benefits of the actions. All nine cities were able to produce numerical estimates of benefits from their actions, including air quality concentration improvements and consequent improvements in life expectancy for the city populations, and the benefits of scaling up their actions to more ambitious targets.</p> <br /><br /><img src="http://www.cerc.co.uk/about-us/assets/news/CERC20180219_C40.jpg" width="360" height="240"/> http://www.cerc.co.uk/about-us/news.php?newsitem=267#news267 Mon, 19 Feb 2018 00:00:00 GMT ADMS NOx chemistry scheme implemented in AERMOD http://www.cerc.co.uk/about-us/news.php?newsitem=266#news266 <p>A <a href="http://www.tandfonline.com/doi/abs/10.1080/10962247.2017.1280096?journalCode=uawm20" title="Access article online" target="_blank">journal article</a> by <a href="http://www.cerc.co.uk/" title="Go to CERC homepage">CERC</a> authors describes the implementation of a NO<sub>x</sub> chemistry scheme in AERMOD which uses similar reactions and an analogous calculation method to the <a href="http://www.cerc.co.uk/ADMS" title="Go to ADMS model page">ADMS</a>&#32;<a href="http://www.cerc.co.uk/environmental-software/assets/data/doc_techspec/P18_02.pdf" title="Access linked document" target="_blank">GRS chemistry</a>. The new chemistry scheme, ADMSM, shows good performance when compared to measurements from five validation studies. The NO<sub>2</sub> predicted by ADMSM has increased consistency with modelled NO<sub>x</sub> compared to the OLM or PVMRM approaches in AERMOD. The figure shows a comparison of predicted average hourly NO<sub>2</sub> to NO<sub>x</sub> ratios against the observed value for cases where observed NO<sub>x</sub> &#8805; 20 &#181;g/m3; studies presented according to source-receptor distance (closest on left). The code development work carried out by CERC was funded by the American Petroleum Institute.</p> <p>This work is cited in the recent <a href="https://www.epa.gov/" title="Access US EPA website" target="_blank">US EPA</a> &#8220;<a href="https://www3.epa.gov/ttn/scram/models/aermod/20170919_AERMOD_Development_White_Papers.pdf" title="Access document online" target="_blank">White Paper on Planned Updates to AERMOD Modeling System</a>&#8221;, and will be further evaluated as an alternative model for Tier 3 NO<sub>2</sub> modelling in AERMOD.</p> <p>References and links to more publications by CERC authors are available <a href="http://cerc.co.uk/environmental-software/CERC-coauthor-publications.html" title="Go to CERC Co-author publications page">here</a> while publications from other researchers using CERC models are listed <a href="http://cerc.co.uk/environmental-software/CERC-software-publications.html" title="Go to CERC Software Publications page">here</a>.</p><br /><br /><img src="http://www.cerc.co.uk/about-us/assets/news/CERC20180212_NOxchemistry.png" width="410" height="150"/> http://www.cerc.co.uk/about-us/news.php?newsitem=266#news266 Mon, 12 Feb 2018 00:00:00 GMT Air quality modelling for the Barbican Low Emissions Neighbourhood http://www.cerc.co.uk/about-us/news.php?newsitem=265#news265 <p>The <a href="http://www.cityoflondon.gov.uk/" title="Access City of London website" target="_blank">City of London Corporation</a> received funding from the Mayor of London to implement a <a href="https://www.cityoflondon.gov.uk/business/environmental-health/environmental-protection/air-quality/Pages/Low-Emission-Neighbourhood.aspx" title="Access City of London website" target="_blank">Low Emissions Neighbourhood</a> in the Barbican, Guildhall and Barts area. One of the LEN proposals included options for restricting access to Beech Street, which runs underneath the Barbican, to all but the cleanest vehicles.</p> <p>The <a href="http://www.cerc.co.uk/" title="Go to CERC homepage">CERC</a>&nbsp;<a href="http://www.cerc.co.uk/environmental-consultancy.html" title="Go to Consultancy page">Consultancy</a> team worked with <a href="http://www.wsp-pb.com/" title="Access WSP website" target="_blank">WSP</a> to quantify the air quality impact of a number of different physical and emissions-based access restrictions for Beech Street. WSP provided traffic data for Beech Street and the surrounding roads for each scenario, taking into account the potential rerouting of restricted vehicles onto the surrounding roads. CERC used <a href="http://www.cerc.co.uk/environmental-software/ADMS-Urban-model.html" title="Go to ADMS-Urban model page">ADMS-Urban</a> to model the impact of the changes to traffic flows on concentrations of NO<sub>2</sub> in the surrounding area.</p> <p>Beech Street is a covered road, with some sections completely covered and some partially covered. The effects of this complex layout on the dispersion of pollutants and chemical reactions was taken into account using the ADMS-Urban Advanced Street Canyon and Tunnels options and a NO<sub>x</sub>-NO<sub>2</sub> correlation derived from local monitoring data.</p> <p>The maps show the modelled annual average NO<sub>2</sub> concentration and the change in annual average NO<sub>2</sub> concentrations with Beech Street restricted to Low Emissions Vehicles.</p> <br /><br /><img src="http://www.cerc.co.uk/about-us/assets/news/CERC20180205_Beech_street1.png" width="255" height="300"/><br /><br /><img src="http://www.cerc.co.uk/about-us/assets/news/CERC20180205_Beech_street2.png" width="255" height="300"/> http://www.cerc.co.uk/about-us/news.php?newsitem=265#news265 Mon, 05 Feb 2018 00:00:00 GMT