Urban air pollution

My research is focussed on developing a better understanding of urban air pollution. One of the most important findings was the discovery that emissions of nitrogen dioxide (NO2) were increasing (Carslaw, 2005). Before that work, directly emitted NO2 from vehicles was largely ignored and unquantified. Since that time, urban NO2 concentrations in many locations across Europe have become important because they are in excess of European air quality limits. Some of the highest ambient measurements of urban NO2 are controlled by directly emitted NO2 from road vehicles. Much of my work since that time has aimed to better quantify emissions vehicle emissions under urban driving conditions.

Another area of focus is the development of receptor modelling approaches to improve understanding of the influence of different emission sources on ambient concentrations. A component of this work includes the development of an R package called openair. The package is widely used throughout the world by academia the public and private sectors.

Performance of optimised SCR retrofit buses under urban driving and controlled conditions. D C Carslaw, M Priestman, M L Williams, G S Stewart and S D Beevers, Atmos. Environ., 2015, 105, 70-77. New insights from comprehensive on-road measurements of NOx, NO2 and NH3 from vehicle emission remote sensing in London, UK. D C Carslaw and G Rhys-Tyler, Atmos. Environ., 2013, 81, 339-347. The importance of high vehicle power for passenger car emissions. D C Carslaw, M L Williams, J E Tate and S D Beevers, Atmos. Environ., 2013, 68, 8-16. Trends in NOx and NO2 emissions from road traffic in Great Britain. S D Beevers, E Westmoreland, M L Williams and D C. Carslaw, Atmos. Environ., 2012, 54, 107-116. Recent evidence concerning higher NOx emissions from passenger cars and light duty vehicles. D C Carslaw, S D Beevers, J E Tate, E Westmoreland and M L Williams, Atmos. Environ., 2011, 45, 7053-7063.