Hi all
This is a good paper.
5 m X 5 m resolution is also amazing.
Thanks Phil for sharing this.
Regards,
Kanan
Dr Kanan Purkayastha MRSC CChem CSci MIAQM FIEnvSc
Specialist Adviser (Contaminated land & Air Quality)
Southover House, Southover Road Lewes BN7 1AB
Tel: 01273 085602|01323 415602
Email [log in to unmask]
www.lewes-eastbourne.gov.uk
-----Original Message-----
From: Air quality [mailto:[log in to unmask]] On Behalf Of Phil Mason
Sent: 19 June 2018 09:03
To: [log in to unmask]
Subject: RapidAir* - Dispersion Modelling
Hi all
An interesting paper "Development and evaluation of the RapidAir® dispersion model, including the use of geospatial surrogates to represent street canyon effects"
https://www.sciencedirect.com/science/article/pii/S1364815217307806
Abstract
We developed a dispersion model (RapidAir®) to estimate air pollution concentrations at fine spatial resolution over large geographical areas with fast run times. Concentrations were modelled at 5 m spatial resolution over an area of ∼3500 km2 in <10 min. RapidAir® was evaluated by estimating NOx and NO2 concentrations at 86 continuous monitoring sites in London, UK during 2008. The model predictions explained 66% of the spatial variation (r = 0.81) in annual NOx concentrations observed at the monitoring sites. We included discrete canyon models or geospatial surrogates (sky view factor, hill shading and wind effect) to improve the accuracy of model predictions at kerbside locations. Geospatial surrogates provide alternatives to discrete street canyon models where it is impractical to run canyon models for thousands of streets within a large city dispersion model (with advantages including: ease of operation; faster run times; and more complete treatment of building effects).
Kind regards
Phil Mason MSc, MIEnvSc, MCIEH, AMIOA
Environmental Consultant (Air Quality, Noise, Contaminated Land) – Infrastructure
Urban Vision Partnership Ltd
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