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Geostatistical Analysis and Mapping of Groundlevel Ozone in a Medium Sized Urban Area

Authors: F. J. Moral García, P. Valiente González, F. López Rodríguez

Abstract:

Ground-level tropospheric ozone is one of the air pollutants of most concern. It is mainly produced by photochemical processes involving nitrogen oxides and volatile organic compounds in the lower parts of the atmosphere. Ozone levels become particularly high in regions close to high ozone precursor emissions and during summer, when stagnant meteorological conditions with high insolation and high temperatures are common. In this work, some results of a study about urban ozone distribution patterns in the city of Badajoz, which is the largest and most industrialized city in Extremadura region (southwest Spain) are shown. Fourteen sampling campaigns, at least one per month, were carried out to measure ambient air ozone concentrations, during periods that were selected according to favourable conditions to ozone production, using an automatic portable analyzer. Later, to evaluate the ozone distribution at the city, the measured ozone data were analyzed using geostatistical techniques. Thus, first, during the exploratory analysis of data, it was revealed that they were distributed normally, which is a desirable property for the subsequent stages of the geostatistical study. Secondly, during the structural analysis of data, theoretical spherical models provided the best fit for all monthly experimental variograms. The parameters of these variograms (sill, range and nugget) revealed that the maximum distance of spatial dependence is between 302-790 m and the variable, air ozone concentration, is not evenly distributed in reduced distances. Finally, predictive ozone maps were derived for all points of the experimental study area, by use of geostatistical algorithms (kriging). High prediction accuracy was obtained in all cases as cross-validation showed. Useful information for hazard assessment was also provided when probability maps, based on kriging interpolation and kriging standard deviation, were produced.

Keywords: Kriging, map, tropospheric ozone, variogram.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1072036

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References:


[1] A. Ribas and J. Pe├▒uelas, "Temporal patterns of surface ozone levels in different habitats of the North Western Mediterranean basin," Atmospheric Environment, vol. 38, pp. 985-992, 2004.
[2] J. Lelieveld, H. Berresheim, S. Borrmann, P.J. Crutzen, F.J. Dentener, H. Fisher, J. Feichter, P.J. Flatau, J. Heland, R. Holzinger, R. Korrmann, M. Lawrence, Z. Levin, K.M. Markowicz, N. Mihalopoulos, A. Minikin, V. Ramanathan, M. de Reus, G.J. Roelofs, H.A. Scheeren, J. Sciare, H. Schlager, M. Schultz, P. Siegmund, B. Steil, E.G. Stephnou, P. Stier, M. Traub, C. Warneke, J. Williams, and H. Ziereis, "Global air pollution crossroads over the Mediterranean," Science, vol. 298, pp. 794-799, 2002.
[3] J. Beck and P. Grennfeld, "Distribution of ozone over Europe," in The Proccedings of the EUROTRAC Symposium 92, The Hague, The Netherlands, 1993, pp. 43-58.
[4] M.J. Sanz, V. Calatayud and E. Calvo, "Spatial patternof ozone injury in Aleppo pine related to air pollution dynamics in a coastal-mountain region of eastern Spain," Environmental Pollution, vol. 108, pp. 239- 247, 2000.
[5] A. Ribas and J. Pe├▒uelas, "Effects of ethylene diurea as a protective antiozonant on beans (Phaseolus vulgaris cv Lit) exposed to different tropospheric ozone doses in Catalonia (NE Spain)," Water, Air and Soil Pollution, vol. 117, pp. 263-271, 2000.
[6] European Environmental Agency, The European Environment. State and Outlook 2005, Copenhagen, 2005.
[7] J. Lelieveld and F.J. Denterner, "What controls tropospheric ozone?," Journal of Geophysical Research, vol. 105, pp. 3531-3551, 2000.
[8] J.A. Logan, "Tropospheric ozone: seasonal behaviour, trends, and anthropogenic influence," Journal of Geophysical Research, vol. 90 (D6), pp. 10463-10482, 1985.
[9] A.S. Lefohn, Surface Ozone Exposures and their Effects on Vegetation. Chelsea: Lewis publishers, 1992.
[10] D. Simpson, "Biogenic emissions in Europe, 2, Implications for ozone control strategies," Journal of Geophysical Research, vol. 100, pp. 891- 906, 1995.
[11] P.S. Monks, "A review of the observations and origins of the spring ozone maximum," Atmospheric Environment, vol. 34, pp. 3545-3561, 2000.
[12] M. Peleg, M. Luria, G. Sharf, A. Vanger, G. Kallos, V, Kotroni, K. Lagouvardos, and M. Varinou, "Observational evidence of an ozone episode over Grater Athens Area," Atmospheric Environment, vol. 31, pp. 3969-3983, 1997.
[13] D. Cocchi and C. Trivisano, "Ozone," in Encyclopedia of environmetrics, New York, 2002, pp. 1518-1523.
[14] C. Dueñas, M.C. Fernández, S. Cañete, J. Carretero, and E. Liger, "Assessment of ozone variations and meteorological effects in an urban area in the Mediterranean coast," The Science of the Total Environment, vol. 299, pp. 97-113.
[15] L.P. Hopkins, K.B. Ensor, and H.S. Rifai, "Empirical evaluation of ambient ozone interpolation procedures to support exposure models," J. Air & Waste Management Association, vol. 49, pp. 839-846, 1999.
[16] S. Vardoulakis, N. Gonzalez-Flesca, B.E.A. Fisher, and K. Pericleous, "Spatial variability of air pollution in the vicinity of a permanent monitoring station in central Paris," Atmospheric Environment, vol. 39, pp. 2725-2736, 2005.
[17] A. Coppalle, V. Delmas, and M. Bobbia, "Variability of NOx and NO2 concentrations observed at pedestrian level in the city centre of a medium sized urban area," Atmospheric Environment, vol. 35, pp. 5361- 5369, 2001.
[18] E.H. Isaaks, and R.M. Srivastava, An Introduction to Applied Geostatistics. New York: Oxford University Press, 1989.
[19] P. Goovaerts, Geostatistics for Natural Resources Evaluation. New York: Oxford University Press, 1997.
[20] D. McGrath, C.S. Zhang, and O.T. Carton, "Geostatistical analyses and hazard assessment on soil lead in Silvermines area, Ireland," Environmental Pollution, vol. 127, pp. 239-248, 2004.
[21] A. Korre, S. Durucan, and A. Koutroumani, "Quantitative-spatial assessment of the risks associated with high Pb loads in soils around Lavrio, Greece," Applied Geochemistry, vol. 17, pp. 1029-1045, 2002.
[22] P. Goovaerts, "Geostatistical modeling of uncertainty in soil science," Geoderma, vol. 103, pp. 3-26, 2001.
[23] D.L: Phillips, D.T., Tingey, E.H., Lee, A.A., Herstrom, and W.E. Hogsett, "Use of auxiliary data for spatial interpolation of ozone exposure in southeastern forests," Environmetrics vol. 8, pp. 43-61, 1997.
[24] M. Tayanc, "An assessment of spatial and temporal variation of sulfur dioxide levels over Istanbul, Turkey," Environmental Pollution, vol. 107, pp. 61-69, 2000.
[25] D.E. Myers, "Interpolation and estimation with spatially located data," Chemometrics and Intelligent Laboratory Systems, vol. 11, pp. 209-228, 1991.
[26] C. Carlon, A. Critto, A. Marcomini, and P. Nathanail, "Risk based characterisation of contaminated industrial site using multivariate and geostatistical tools," Environmental Pollution, vol. 111, pp. 417-427, 2001.
[27] J.E. Diem, "A critical examination of ozone mapping from a spatialscale perspective," Environmental Pollution, vol. 125, pp. 369-383, 2003.
[28] P.A. Burrough, and R.A. McDonnell, Principles of Geographical Information Systems. Oxford: Oxford University Press, 1998.
[29] K. Johnston, J. M. Ver Hoef, K. Krivoruchko, and N. Lucas, Using ArcGIS Geostatistical Analyst. Redlands, USA: Environmental Systems Research, 2001.
[30] R. Webster, and M.A. Oliver, Geostatistics for Environmental Scientists. Brisbane, Australia: John Wiley & Sons Ltd, 2001.
[31] N. Cressie, "Fitting variogram models by weighted least squares," Mathematical Geology, vol.17, pp. 563-586, 1985.
[32] C. Deutsch, and A. Journel, Geostatistical Software Library and User-s Guide. New York: Oxford University Press, 1992.
[33] L.A. McNair, R.A. Harley, and A.G. Russell, "Spatial inhomogeneity in pollutant concentrations, and their implications for air quality model evaluation," Atmospheric Environment, vol. 30, pp. 4291-4301, 1996.