In dicembre molte stazioni di misurazione dell’Ufficio federale dell’ambiente (UFAM) hanno registrato nuovi livelli d’acqua record, fra cui quelli dei laghi di Bienne e di Costanza.
Il precedente valore massimo a Bienne in dicembre era di 429,45 metri. Lo scorso 13 dicembre, ha raggiunto i 430,44 metri. Il livello del Lago di Costanza era di 396,43 metri il 15 e il 16 dicembre, un record dal 1930.
Secondo l’UFAM, gli eventi meteorologici e alluvionali di novembre e dicembre dello scorso anno corrispondono agli scenari climatici e idrologici del futuro. Si prevede infatti che periodi di siccità più lunghi in primavera e in estate si alterneranno a forti precipitazioni. La probabilità di inondazioni aumenterà in inverno, poiché con il riscaldamento climatico le precipitazioni saranno sempre più spesso sotto forma di pioggia anziché di neve.
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