Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6577008 | Urban Climate | 2015 | 16 Pages |
Abstract
NSD model performance indicates an average deviation between observations and model (Bias) in the order of <10% with respect to total particle number concentration. The most reliable predictions were achieved for roadside sites with correlation coefficients (R) of 0.75 on average and a normalized root mean square error (RMSEn) of 0.79. Limited performance was observed for rural sites (R = 0.61; RMSEn â¼Â 1.2). The transferability of the model approach to an independent urban background site was tested showing R of 0.5 and normalized RMSEn of 1.4. Although the physical relationship between particle NSD, ambient meteorological conditions and the temporal parameters are extremely complex, the model was able to reproduce the variation in particle concentrations. As a first in the field this study focused on modelling the entire number size distribution in contrast to size integrated particle number concentrations.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Earth and Planetary Sciences (General)
Authors
Clemens von Bismarck-Osten, Wolfram Birmili, Matthias Ketzel, Stephan Weber,