Data



Data Notes



Extracted from Database

04 Feb 2019

CASCAIS

Station Information

Station ID: 52
Latitude: 38.683333
Longitude: -9.416667
GLOSS ID: 246
Coastline code: 210
Station code: 21
Country: PORTUGAL
Time span of data: 1882 – 1993
Completeness (%): 93
MTL Data: 1882-1958
MTL-MSL (mm): 4
Link to ellipsoid: Available
Date of last update: 27 Jan 2016

Green Arrow: Current Station
Yellow Marker: Neighbouring RLR Station
Red Marker: Neighbouring Metric Station

Please note: In many cases, the station position in our database is accurate to only one minute. Thus, the tide gauge may not appear to be on the coast.

Tide Gauge Data

Plot of monthly mean sea level data at CASCAIS.

Link to larger image of monthly data plot.
Download monthly mean sea level data.

Plot of annual mean sea level data at CASCAIS.

Link to larger image of annual data plot.
Download annual mean sea level data.

Download metric sea level data. Use only with extreme caution.
NOTE: If some of the data are red in the plots above, the 'flag for attention' is set. Please see the documentation below.

Additional Data Sources (guide to additional data sources)

Nearby GNSS Stations from SONEL: CASC
Fast Delivery Data from UHSLC station 209: hourly and daily
Research Quality Data from UHSLC station 209: hourly and daily

Station Documentation

Link to RLR information.

Documentation - date unknown

PRIOR TO 1959 MSL VALUES BASED ON READINGS OF HIGH AND LOW WATER

Documentation added 1991-06-11

Cascais 210/021 RLR(1964) is 11.2m below BMOb1

Documentation added 1995-10-31

Oct- Nov 1993 values checked and as received from authority

Documentation added 1997-01-13

data for 1985-87 revised January 1997

Documentation added 2001-03-28

Data for 1986-93 updated March 2001

Documentation added 2001-04-06

Cascais experienced a small tsunami on 28 February 1969 following a M=7.3 earthquake on the Horseshoe Abyssal Plain at 36 N 11 W.

Documentation added 2002-02-05

Cascais 1994-1999 gap due to malfunction.

Documentation added 2016-01-22

A value of MTL-MSL=4 mm has been applied to the RLR data for the period 1882-1958. The values were derived using the GESLA2 (high-frequency tide gauge) dataset using harmonic constituents.

Data Authority

Instituto Port. de Cartografia e Cadastro
Rua de Artilharia Um, No. 107
P - 1070 Lisboa