Evidences of different meteorological patterns governing 7Be and 210Pb surface levels in the southern Iberian Peninsula

摘要: Abstract 7Be, 210Pb and PM10 levels in surface air have been simultaneously measured at two sampling sites the southern Iberian Peninsula for a period of years. Each site covers one different meteorological area Guadalquivir valley, from mouth (Huelva) to middle point (Cordoba). The objective present study is analyse spatial variability both natural radionuclides, identify characterise patterns associated with similar concentration this complex region. Concentrations are sites. 7Be level 0.6–15.5 mBq m−3 range Huelva 1.2–13.3 Cordoba, activity concentrations between 0.04 2.30 Huelva, 0.03 1.2 found be 5.1–81.3 μg m−3 8.2–76.3 μg m−3 respectively. A linear regression analysis indicates more regional than simultaneous measurements. Principal components (PCA) applied datasets results reveal that aerosol behaviour mainly represented by components, which explain 82% total variance. measurements parameters revealed component F1 groups periods influence conditions over region lead On other hand, F2 detaches monitoring sites, shows how within development mesoscale circulations each part valley. identification characterised differences wind stations suggests valley could not considered as single unit certain scenarios. These evidence understanding characteristics terrain provide some essential knowledge regionalization and/or optimization networks.