University of Leicester scientists model impact of green infrastructure on City Centre traffic pollution

Posted by ap507 at Nov 30, 2016 09:31 AM |
Study results show a direct link between air pollution and green infrastructure

Issued by University of Leicester Press Office on 30 November 2016

Images available here: https://www.dropbox.com/sh/t37wnbvv8bb4faq/AADqvpL4gJi7vpmThczvVaxya?dl=0

Scientists from EarthSense Systems and the University of Leicester have published the results of a study into the effect of urban trees on air pollution.

The results show a direct link between air pollution and green infrastructure, with trees and grass cover contributing to a reduction in concentrations of fine particulate matter (PM2.5).

The newly published research shows that the aerodynamic dispersive effect of trees results in a 9.0 percent reduction in PM2.5 concentrations. A decrease of PM2.5, by 2.8 percent owing to deposition on trees and 0.6 percent owing to deposition on grass, was also observed.

Conducted on a larger scale than previous studies, the project utilised the latest geographic data from aerial mapping company Bluesky, including aerial photography, laser mapped LiDAR and the unique National Tree Map.

The University of Leicester led study also used accepted modelling techniques, such as Computational Fluid Dynamics (CFD), already validated for wind flow and particle dispersion modelling.

EarthSense is a new joint venture between Bluesky and the University of Leicester, established to provide commercial access to a range of leading air quality technologies and research.

“This is the first time a study of this scale and nature has been conducted in the UK,” commented Professor Roland Leigh, Technical Director of EarthSense and Director of Enterprise at the University of Leicester’s Institute for Space and Earth Observation. “The results provide valuable information on the interaction of particulate matter and vegetation in the complex urban environment. There are implications on our future modelling of pollutant concentrations, and the structure and positioning of key green infrastructure.” 

James Eddy, Managing Director of EarthSense Systems and Technical Director at Bluesky, added: “This study shows the part that green infrastructure can play in reducing the effects of harmful traffic emissions in our city centres. When co-ordinated with an understanding of local implementation and traffic planning, this will be significant in shaping future cities.”

Antoine Jeanjean, lead author of the paper and Modeller at EarthSense Systems, commented: “The use of the most up to date and accurate geographical data, combined with proven modelling techniques on this scale, is a first, and we hope it will inform and influence further studies and real world projects.”

The paper, titled ‘Modelling the effectiveness of urban trees and grass on PM2.5 reduction via dispersion and deposition at a city scale’ by EarthSense Systems’ Antoine Jeanjean – Modeller, Paul Monks – Non-Executive Director and Professor Roland Leigh – Technical Director, has been published in peer reviewed format prior to full publication in the Atmospheric Environment Journal and is freely available at the following link:

http://www.sciencedirect.com/science/article/pii/S1352231016307336

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Editor’s Notes:

EarthSense Systems aims to deliver products that enable the world to visualise and solve its air quality issues. A joint venture between aerial mapping company Bluesky and the University of Leicester, EarthSense enables policy makers, planners and those responsible for delivering results, to access to real world information in order to support decision making.

With a mix of hardware (air quality sensors), software (bespoke modelling), data (derived and complementary) and people, EarthSense is uniquely poised to take a lead in air quality monitoring solutions and services, making a difference to people’s lives and delivering high value information to a range of consumers and decision makers. www.earthsense.co.uk

The University of Leicester is a leading UK University committed to international excellence through the creation of world changing research and high quality inspirational teaching. Leicester is among the most socially inclusive of Britain's top 20 leading universities. The University of Leicester is The Times/Sunday Times 2014 University of the Year Runner-Up and the THE University of the Year 2008-9.  Leicester is a three-time winner of the Queen’s Anniversary Prize for Higher and Further Education, and is the only University to win seven consecutive awards from the Times Higher Education (THE) magazine. Leicester is ranked 14th out of 121 institutions by The Times/Sunday Times and the University is ranked among the top two percent in the world by the QS World University Rankings, Taiwan World University Rankings and THE World University Rankings. https://le.ac.uk/about-us/facts-and-figures

Bluesky is a UK-based specialist in aerial survey including aerial photography, LiDAR and thermal data using the very latest survey technology, including two UltraCam Eagles and an Orion M300 LiDAR system. An internationally recognised leader with projects extending around the globe, Bluesky is proud to work with prestigious organisations such as Google, the BBC and Government Agencies. 

Bluesky has unrivalled expertise in the creation of seamless, digital aerial photography and maintains national “off the shelf” coverage of aerial photography, DTM and DSM through an on-going three year update programme. By purchasing a World first sensor for the simultaneous capture of LiDAR, thermal and aerial photography data, Bluesky is in the enviable position of being able to provide customers with unique and cost effective solutions.

Bluesky is also leading the way in developing innovative solutions for environmental applications, including the UK’s first National Tree Map (NTM), solar mapping and citywide ‘heat loss’ maps, and is currently developing noise and air quality mapping products. www.bluesky-world.com

 

 

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