Ambient ozone exposure in Czech forests: a GIS-based approach to spatial distribution assessment.

TheScientificWorldJournal
I HůnováM Zapletal

Abstract

Ambient ozone (O(3)) is an important phytotoxic pollutant, and detailed knowledge of its spatial distribution is becoming increasingly important. The aim of the paper is to compare different spatial interpolation techniques and to recommend the best approach for producing a reliable map for O(3) with respect to its phytotoxic potential. For evaluation we used real-time ambient O(3) concentrations measured by UV absorbance from 24 Czech rural sites in the 2007 and 2008 vegetation seasons. We considered eleven approaches for spatial interpolation used for the development of maps for mean vegetation season O(3) concentrations and the AOT40F exposure index for forests. The uncertainty of maps was assessed by cross-validation analysis. The root mean square error (RMSE) of the map was used as a criterion. Our results indicate that the optimal interpolation approach is linear regression of O(3) data and altitude with subsequent interpolation of its residuals by ordinary kriging. The relative uncertainty of the map of O(3) mean for the vegetation season is less than 10%, using the optimal method as for both explored years, and this is a very acceptable value. In the case of AOT40F, however, the relative uncertainty of the map is notabl...Continue Reading

References

Jan 1, 1997·Environmental Pollution·J FuhrerM R Ashmore
Sep 18, 2004·Journal of the Air & Waste Management Association·Joseph S Abraham, Andrew C Comrie
Jun 14, 2008·Environment International·A L BeaulantL Wald
Jan 21, 2009·The Science of the Total Environment·Rob BeelenDavid J Briggs

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Citations

Aug 27, 2015·Environmental Science and Pollution Research International·Iva HůnováAlena Kulasová

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Software Mentioned

OK
CAMx
ALR
res
ArcGIS Geostatistical Analyst

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