Journal
ATMOSPHERIC ENVIRONMENT
Volume 36, Issue 13, Pages 2237-2244Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S1352-2310(02)00164-4
Keywords
air pollution; statistics; data analysis; wind direction; nonparametric regression
Ask authors/readers for more resources
The relationship of the concentration of air pollutants to wind direction has been determined by nonparametric regression using a Gaussian kernel. The results are smooth curves with error bars that allow for the accurate determination of the wind direction where the concentration peaks, and thus, the location of nearby sources. Equations for this method and associated confidence intervals are given. A nonsubjective method is given to estimate the only adjustable parameter. A test of the method was carried out using cyclohexane data from 1997 at two sites near a heavy industrial region in Houston, Texas, USA. According to published emissions inventories, 70% of the cyclohexane emissions are from one source. Nonparametric regression correctly identified the direction of this source from each site. The location of the source determined by triangulation of these directions was < 500 m from that given in the inventory. Nonparametric regression is a powerful technique that has many potential uses in air quality studies and atmospheric sciences. (C) 2002 Elsevier Science Ltd, All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available