Climate change, drought and groundwater availability in southern Italy (Articolo in rivista)

Type
Label
  • Climate change, drought and groundwater availability in southern Italy (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1144/SP288.4 (literal)
Alternative label
  • Polemio M.; Casarano D. (2008)
    Climate change, drought and groundwater availability in southern Italy
    in Special publication - Geological Society of London
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Polemio M.; Casarano D. (literal)
Pagina inizio
  • 39 (literal)
Pagina fine
  • 51 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://books.google.it/books?id=-taqtPdGoFcC&pg=PA51&lpg=PA51&dq=Trend+termopluviometrici,+siccit%C3%A0+e+disponibilit%C3%A0+di+acque+sotterranee.+Atti+della+Giornata+di+Studio:+Metodi+Statistici+e+Matematici+per+l%27Analisi+delle+Serie+Idrologiche,+123-132,+Napoli,+2004.+In+collaborazione+con+Casarano+D.,+Dragone+V..+%28PUBBL.115%29.&source=bl&ots=8rScx3V0i-&sig=skj9THBZt086kVfnP7jrl1TQGOA&hl=it&ei=N8rmSoDECJSwnQPHkYCtCA&sa=X&oi=book_result&ct=result&resnum=1&ved=0CAgQ6AEwAA#v=onepage&q=&f=false (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 288 (literal)
Rivista
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  • Abstract. Data from 1821 to 2003 of 126 rain gauges, 41 temperature gauges, 8 river discharge gauges and 239 wells, located in Southern Italy, have been analyzed to characterize the effect of recent climate change on water resources availability, focusing on groundwater resources. Regular data are available from 1921 to 2001. Many analysis methods are used: principal component analysis, to divide the study area in homogenous portions; trend analysis, considering the Mann-Kendall, t-Student and Craddock tests, autocorrelation and crosscorrelation analyses; seasonal, annual and moving average variables are considered, applying the spatial analysis to each variable with a GIS approach. A widespread decreasing trend of annual rainfall is observed over 97% of the whole area. The decreasing trend of rainfall worsens or decreases as mean annual rainfall increases; the spatial mean of trend ranges from -0.8 mm/year in Apulia to -2.9 mm/year in Calabria. The decrease in rainfall is notable after 1980: the recent droughts of 1988-92 and 1999-2001 appear to be exceptional. On a seasonal basis, the decreasing trend is concentrated in winter; a slight positive trend is observed in summer, the arid season in which the increase is useless as it is transformed in actual evapotranspiration. The temperature trend is not everywhere significant and homogeneous also if the temperature increase seems to prevail, especially from about 1980. Net rainfall, calculated as a function of monthly rainfall and temperature, shows a huge and generalized negative trend. The trend of groundwater availability is so negative everywhere that the situation can be termed dramatic for water users, due not only to the natural drop in recharge but also to the increase of discharge by wells to compensate the unavailability of surface water tapped by dams, as a direct effect of droughts. (literal)
Note
  • Scopu (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR IRPI (literal)
Titolo
  • Climate change, drought and groundwater availability in southern Italy (literal)
Abstract
  • Data for the period 1821 to 2003 from 126 rain gauges, 41 temperature gauges, eight river discharge gauges and 239 wells, located in southern Italy, have been analysed to characterize the effect of recent climate change on availability of water resources, focusing on groundwater resources. Regular data are available from 1921 to 2001. Many analysis methods are used: principal component analysis, to divide the study area into homogenous portions; trend analysis, considering the Mann-Kendall, Student-t and Craddock tests, autocorrelation and cross-correlation analyses, and seasonal, annual and moving-average variables, applying the spatial analysis to each variable with a geographical information system approach. A widespread decreasing trend of annual rainfall is observed over 97% of the whole area. The decreasing trend of rainfall worsens or decreases as mean annual rainfall increases; the spatial mean of trend ranges from 20.8 mm/a in Apulia to 22.9 mm/a in Calabria. The decrease in rainfall is notable after 1980: the recent droughts of 1988-1992 and 1999-2001 appear to be exceptional. On a seasonal basis, the decreasing trend is concentrated in winter; a slight positive trend is observed in summer, the arid season in which the increase is useless as it is transformed into actual evapotranspiration. The temperature trend is not significant and homogeneous everywhere if the temperature increase seems to prevail, especially from about 1980. Net rainfall, calculated as a function of monthly rainfall and temperature, shows a huge and generalized negative trend. The trend of groundwater availability is so negative everywhere that the situation can be termed dramatic for water users, due not only to the natural drop in recharge but also to the increase of discharge by wells to compensate the non-availability of surface water tapped by dams, as a direct effect of droughts. (literal)
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