MSL monitoring over the last 15 years, with tide gauge data (Cascais) and satellite altimetry data (mainland Atlantic coast), with monthly updates.
Monthly averages of tide gauge records from Cascais (1882-present), including data from the old analogue tide gauge (jan 1882 – oct 2003), data from the digital acoustic tide gauge (nov 2003 – jun 2019) and data from the digital radar tide gauge (jul 2019 – present). Data from the new digital tide gauges (in Cascais Marina), as of november 2003, are corrected for the vertical movement of the support structure, based on high-precision geometric leveling measurements
Reference in the National Vertical Datum (Cascais1938, relative to the average of the period 1882-1938).
Daily sea level averages series recorded on the Cascais tide gauge (jan 2000 – feb 2023), corrected for the average seasonal of the Atmospheric Pressure variation (inverse barometric effect) and the vertical velocity of the site (settling movement of the support structure at Cascais marina).
With reference to the National Vertical Datum (Cascais1938). The most recent uncorrected data (since 2007) can be downloaded from ftp://ftp.dgterritorio.pt/Maregrafos.
Citations:
[2] Antunes C. (2019) Assessment of Sea Level Rise at West Coast of Portugal Mainland and Its Projection for the 21st Century. J. Mar. Sci. Eng. Int., 7(3), 61, doi.org/10.3390/jmse7030061
[1] Vieira R., Antunes C. e Taborda R. (2012) Caracterização da sobreelevação meteorológica em Cascais nos últimos 50 anos. Actas das 2.as Jornadas de Engenharia Hidrográfica, Instituto Hidrográfico, Lisbon, Portugal.
MSL rise series comparison, between the global and North Atlantic models from satellite altimetry and the Cascais tide gauge series (1993-2019).
MSL(2000) reference, located 13 cm above the National Vertical Datum "Cascais1938".
Updated reconstruction of data from the worldwide tide gauge network between 1880-2019 from Church & White (2011) and satellite altimetry data from the Australian CSIRO center (1993-2020).
MSL(2000) reference, located 13 cm above the National Vertical Datum "Cascais1938".
Data source:
https://www.cmar.csiro.au/sealevel/sl_hist_few_hundred.html
Authors' publications:
[13] Subida do Nível Médio do Mar em Cascais, Revisão da Taxa Actual. (2016)
[10] A Subida do NMM e a necessidade de revisão dos Referenciais Verticais. (2014)
[9] Eventos Extremos e a Variação do Nível do Mar. (2014)
[7] Caracterização da Sobreelevação Meteorológica em Cascais nos últimos 50 Anos. (2012)
[6] Variação Actual do NMM em Cascais. (2011)
[5] Estudo da Análise Harmónica da Maré aplicada ao Marégrafo de Cascais. (2011)
[4] Monitoring Sea Level Change at Cascais Tide Gauge. (2011)
[3] Monitorização da Variação do Nível Médio do Mar. (2010)
[2] Tsunami Meteorológico - 06 e 07 de Julho de 2010, na Costa Sul de Portugal Continental. (2010)
[1] Sea Level at Cascais Tide Gauge: Data, Analysis and Results. (2009)