ClearfLo: Clean Air for London

Lead Research Organisation: University of Leeds
Department Name: School of Earth and Environment

Abstract

Poor air quality, particularly in urban areas, has a demonstrable effect on human health, but the processes responsible for producing the main pollutants, namely particulate matter, ozone, nitrogen dioxide and heat are not well understood and are poorly predicted. The ambition of ClearfLo is to provide integrated measurements of the meteorology, composition and particulate loading of London's urban atmosphere, made at street level and at elevated sites, complemented by modelling, to improve predictive capability for air quality. This ambition will be addressed by establishing new measurement capabilities in London, which will be used for long-term measurements and intensive observation periods, and by analysis and modelling of the measurements to establish key processes.

Publications

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Bohnenstengel S (2015) Meteorology, Air Quality, and Health in London: The ClearfLo Project in Bulletin of the American Meteorological Society

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Lee J (2015) Detailed budget analysis of HONO in central London reveals a missing daytime source in Atmospheric Chemistry and Physics Discussions

 
Description Summer and winter measurements of several free-radical species (OH, HO2, RO2)

Direct calculation of ozone production rates using radical concentrations

OH reactivity - comparison of measured and modelled reveals signifiant missing OH reactivity

Breakdown of production of O3 from different VOCs partly possible
Exploitation Route Material used in talks given at Schools Poster at AGU Meeting, Dec 2012
Sectors Environment