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Precipitation chemistry in Croatia during the period 1981-2006 (CROSBI ID 146979)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Špoler Čanić, Kornelija ; Vidič, Sonja ; Bencetić Klaić, Zvjezdana Precipitation chemistry in Croatia during the period 1981-2006 // Journal of environmental monitoring, 11 (2009), 4; 839-851. doi: 10.1039/b816432k

Podaci o odgovornosti

Špoler Čanić, Kornelija ; Vidič, Sonja ; Bencetić Klaić, Zvjezdana

engleski

Precipitation chemistry in Croatia during the period 1981-2006

The spatial, temporal changes and trends changes in precipitation chemistry in Croatia during the period 1981 2006 were analysed using data from 27 sampling sites. The origins of air masses that arrived over Croatia were evaluated by the sector analysis of two-dimensional back trajectories. The distribution per sector of the volume-weighted concentrations of the main ions (sulphate, nitrate, chloride, ammonium, calcium, magnesium, sodium, and potassium) and the pH were also inspected. The trend in the annual volume-weighted concentrations of the major ions in precipitation and pH was tested using the nonparametric Mann Kendall test and Sen’ s slope estimator. The sulphate and nitrate ion concentrations significantly decreased for the majority of sites. The main decline of the sulphate ion concentration occurred after 1990. Changes in the anthropogenic sulphur emission patterns over Europe in the last two decades resulted in different acidity and sulphate ion concentrations related to a particular sector compared to earlier times. In addition, precipitation chemistry in Croatia was also influenced by geographical and climatological diversity. Finally, the war and post-war activities were identified as possible anthropogenic sources of some base cations, i.e., potassium and calcium.

annual volume weighted concentrations of the main ions; pH; wind sector allocation; Mann-Kendall test; war

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Podaci o izdanju

11 (4)

2009.

839-851

objavljeno

1464-0325

10.1039/b816432k

Povezanost rada

Geologija

Poveznice
Indeksiranost