The first version of the Pan-European Indoor Radon Map
- ELIO JAVIER
- CINELLI GIORGIA
- BOSSEW PETER
- GUTIERREZ-VILLANUEVA JOSE-LUIS
- TOLLEFSEN TORE
- DE CORT MARC
- NOGAROTTO ALESSIO
- BRAGA ROBERTO
DOIAbstract
A hypothetical Pan-European Indoor Radon Map has been developed using summary statistics estimated from 1.2 million indoor radon samples. In this study we have used the arithmetic mean (AM) over grid cells of 10 km × 10 km to predict a mean indoor radon concentration at ground-floor level of buildings in the grid cells where no or few data (N<30) are available. Four interpolation techniques have been tested: inverse distance weighting (IDW), ordinary kriging (OK), collocated cokriging with uranium concentration as a secondary variable (CCK), and regression kriging with topsoil geochemistry and bedrock geology as secondary variables (RK). Cross-validation exercises have been carried out to assess the uncertainties associated with each method...
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