University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Street Versus Rooftop Level Concentrations of Fine Particles in a Cambridge Street Canyon

Kumar, P, Fennell, P, Hayhurst, A and Britter, R (2009) Street Versus Rooftop Level Concentrations of Fine Particles in a Cambridge Street Canyon Boundary-Layer Meteorology, 131 (1). 3 - 18. ISSN 0006-8314

[img]
Preview
PDF
Street vs Rooftop_BLM_Preprint.pdf - Accepted Version
Available under License : See the attached licence file.

Download (1MB)
[img] Plain Text (licence)
licence.txt

Download (1kB)

Abstract

Dispersion of particles, as evidenced by changes in their number distributions (PNDs) and concentrations (PNCs), in urban street canyons, is still not well understood. This study compares measurements by a fast-response particle spectrometer (DMS500) of the PNDs and the PNCs (5–1000 nm, sampled at 1 Hz) at street and rooftop levels in a Cambridge UK street canyon, and examines mixing, physical and chemical conversion processes, and the competing influences of traffic volume and rooftop wind speed on the PNDs and the PNCs in various size ranges. PNCs at street level were ≈6.5 times higher than at rooftop. Street-level PNCs followed the traffic volume and decreased with increasing wind speed, showing a larger influence of wind speed on 30–300 nm particles than on 5–30 nm particles. Conversely, rooftop PNCs in the 5–30 nm size range increased with wind speed, whereas those for particles between 30 and 300 nm did not vary with wind speed.

Item Type: Article
Uncontrolled Keywords: Earth and Environmental Science
Related URLs:
Divisions: Faculty of Engineering and Physical Sciences > Civil and Environmental Engineering
Depositing User: Symplectic Elements
Date Deposited: 07 Jul 2011 12:44
Last Modified: 08 Nov 2013 12:08
URI: http://epubs.surrey.ac.uk/id/eprint/6571

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year


Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800