Mediterranean Sea Level Variations from Altimetry and Tide and Gauge data

• Zid, Ferdous ^[1] ; Vigo M. Isabel ^[1] ; García, David ^[1] ; Vargas Juan ^[1]
  1. [1] Universitat d'Alacant

     Universitat d'Alacant

     Alicante, España

     
• Localización: 10.ª Asamblea Hispano-Portuguesa de Geodesia y Geofísica: artículos, 2023, ISBN 978-84-416-7540-7, págs. 151-160
• Idioma: inglés
• Enlaces
  • Texto Completo Libro
• Resumen

  • In this work, we analyse the sea level variations on both annual and interannual scales, covering the time span from 1993 to 2021. We consider a regional solution for the Mediterranean Sea of sea level anomalies data from multi-mission satellite altimetry (Jason-3, Sentinel-3A, HY-2A, Saral/AltiKa, Cryosat-2, Jason-2, Jason-1, T/P, ENVISAT, GFO, ERS1/2) with a spatial resolution of 0.25°. The estimated mean annual cycle presents and amplitude of 68 ± 4 mm and maximum phase in early September. Regarding to the interannual variability, it is confirmed an increasing linear trend of 3.02 ± 0.31 mm/year in the whole Mediterranean, with some differences at sub-basin scale (2.78 ± 0.37 mm/year in the Ionian Sea, 2.82 ± 0.27 in the Eastern basin, and 3.46 ± 0.43 mm/year in the Western basin). Additionally, coastal Tide Gauge data from several stations is examined and used to validate and complement the satellite derived sea level estimates by mean of statistical tools. Furthermore, the mean Mediterranean Sea level is analysed together with the North Atlantic Oscillation index identifying higher influence of this oscillations on the sea level records for the period 2005-2015.

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