Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Discriminating among multiple components affecting bulk atmospheric deposition chemistry: a multivariate approach using data from a forest plot in Calabria (Southern Italy) |
| Abstract | This study examines the relationships between meteorology and atmospheric deposition chemistry on the basis of 4 years of monitoring in an area of Calabria (Piano Limina) under the National Integrated Programme for the Control of Forest Ecosystems. The location of the area and its low anthropogenic impact meant that phenomena of locally originating alkaline dust deposition could be distinguished from those originating long distances away. The analysis performed on the whole dataset revealed the interaction between temperature, solar radiation and ionic concentrations; the effects of the atmospheric transport of compounds, with lower concentrations during calm conditions; and a marked increase of calcium, alkalinity and pH with winds from W-SW, owing to the transport of alkaline dust from North Africa, in agreement with thematic maps on the synoptic scale. The possible influence of two volcanic events deriving from Stromboli and Etna is discussed. After elimination of the Saharan dust and volcanic events, a multivariate analysis showed the effects of compounds deriving from anthropogenic activities. Sulphate, nitrate and ammonium were closely correlated with NW winds; air masses from this direction come from the continental land mass and the sea, crossing the Calabrian plain before being deposited as precipitation on the Apennine chain. The component from NW also includes a high marine contribution, with maximum values of chloride and sodium. |
| Source | Journal of limnology (Testo stamp.) 66 (1), pp. 3–14 |
| Keywords | atmospheric deposition chemistrymeteorologySouthern ItalyNorth African dustatmospheric pollutants |
| Journal | Journal of limnology (Testo stamp.) |
| Editor | Istituto per lo Studio degli Ecosistemi., Verbania Pallanza, Italia |
| Year | 2007 |
| Type | Articolo in rivista |
| DOI | 10.4081/jlimnol.2007.3 |
| Authors | Arisci S., Amoriello T.(1), Mosello R., Costantini A.(1), Badiani M.(2) |
| Text | 52966 2007 10.4081/jlimnol.2007.3 ISI Web of Science WOS 000249928300002 atmospheric deposition chemistry meteorology Southern Italy North African dust atmospheric pollutants Discriminating among multiple components affecting bulk atmospheric deposition chemistry a multivariate approach using data from a forest plot in Calabria Southern Italy Arisci S., Amoriello T. 1 , Mosello R., Costantini A. 1 , Badiani M. 2 1 C.R.A. Experimental Institute for Plant Nutrition, 00184 Rome, Italy; 2 Universita Mediterranea di Reggio Calabria, Faculty of Agricultural Science, 89129 Reggio Calabria, Italy This study examines the relationships between meteorology and atmospheric deposition chemistry on the basis of 4 years of monitoring in an area of Calabria Piano Limina under the National Integrated Programme for the Control of Forest Ecosystems. The location of the area and its low anthropogenic impact meant that phenomena of locally originating alkaline dust deposition could be distinguished from those originating long distances away. The analysis performed on the whole dataset revealed the interaction between temperature, solar radiation and ionic concentrations; the effects of the atmospheric transport of compounds, with lower concentrations during calm conditions; and a marked increase of calcium, alkalinity and pH with winds from W SW, owing to the transport of alkaline dust from North Africa, in agreement with thematic maps on the synoptic scale. The possible influence of two volcanic events deriving from Stromboli and Etna is discussed. After elimination of the Saharan dust and volcanic events, a multivariate analysis showed the effects of compounds deriving from anthropogenic activities. Sulphate, nitrate and ammonium were closely correlated with NW winds; air masses from this direction come from the continental land mass and the sea, crossing the Calabrian plain before being deposited as precipitation on the Apennine chain. The component from NW also includes a high marine contribution, with maximum values of chloride and sodium. 66 http //www.jlimnol.it/index.php/jlimnol Articolo pubblicato 2007_Arisci_et_al_J_Limnol_66.pdf Articolo in rivista Istituto per lo Studio degli Ecosistemi. 1129 5767 Journal of limnology Testo stamp. Journal of limnology Testo stamp. J. limnol. Testo stamp. Journal of limnology. Testo stamp. ARISCI SILVIA rosario.mosello MOSELLO ROSARIO TA.P02.014.002 Impatto dei cambiamenti globali sugli ecosistemi acquatici |