A nonstationary analysis for the Northern Adriatic extreme sea levels

摘要: [1] The historical data from the Trieste, Venice, Porto Corsini, and Rimini tide gauges have been used to investigate spatial temporal changes in extreme high water levels Northern Adriatic. A detailed analysis of annual mean sea level evolution at three longest operating stations shows a coherent behavior both on regional global scale. slight increase magnitude elevations, after removal regularized necessary eliminate effect local subsidence rise, is found Venice Corsini stations. It seems be mainly associated with wind regime change occurred 1990s, due an intensification Bora events their decrease frequency intensity during second half 20th century. The values, adjusted for trend, are modeled using time-dependent GEV distribution. inclusion seasonality parameters considerably improves fitting. interannual fluctuations detrended monthly maxima exhibit significant correlation variability large-scale atmospheric circulation represented by North Atlantic Oscillation Arctic indices. different coast exposure Sirocco winds seasonal character explain various patterns observed considered present analysis.