Ten years water and energy surface balance from the CNR-ISAC micrometeorological station in Salento peninsula (southern Italy)

摘要

Data of surface-atmosphere energy and water transfer from a ten years(2003–2013) period of activity of the ISAC-Lecce micrometeorological station(href="http://www.basesperimentale.le.isac.cnr.it"target="_blank">http://www.basesperimentale.le.isac.cnr.it) have been analyzed: tothe authors' knowledge this is the first decadal data set ofsurface-atmosphere transfer in Salento peninsula. The surface energy budgetshows a tendency to a positive bias possibly due to several reasons thatrequire more investigations. Some suitable indices related to the surfacewater balance, such as the precipitation intensity, the aridity index andthe ground water infiltration fraction have been calculated. Possible trendsof these annual averages in the decadal period are considered, also takinginto account the statistical uncertainty associated to measurement errorsand missing data. The results indicate a significant increasing in theprecipitation intensity together with an experimental evidence of increasingof the ground water infiltration in the measurement area, that is inagreement with recent estimations for the whole Salento peninsula. On theother hand, recent studies show that seawater intrusion and salinization ofthe deep underground aquifer keep increasing in the same period.