Data



Data Notes



Extracted from Database

09 Sep 2019

GAN II

Station Information

Station ID: 1707
Latitude: -0.683333
Longitude: 73.15
GLOSS ID: 27
Coastline code: 454
Station code: 2
Country: MALDIVES
Time span of data: 1987 – 2016
Completeness (%): 93
Date of last update: 28 Feb 2018

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 GAN II.

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

Plot of annual mean sea level data at GAN II.

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: ADDU
Nearby Real Time Stations from VLIZ: ganm
Fast Delivery Data from UHSLC station 109: hourly and daily
Research Quality Data from UHSLC station 109: hourly and daily

Station Documentation

Link to RLR information.

Documentation added 1993-03-22

Data received from TOGA office

Documentation added 1996-10-15

instrument type: analog (L&S); digital (F&P,ENC,ENB (03/1987-10/1988) Leupold and Stevens Analog gauge;(10/1988-06/1990) Fischer and Porter Analog-to- Digital Recorder;(1992-) Handar 436-A, Encoder (ENC);(1992-) Handar 436-B (ENB) float gauges

Documentation added 2010-11-18

Complete dataset 1987-2009 received from UHSLC. These were checked against existing data values - they appear to be the same up until data following the gap Sept. 2002 after which the revised values are approx. 8mm lower. Complete dataset has been entered onto the database. RLR remains 5.490m

Documentation added 2013-10-15

Complete UHSLC dataset 1987-2012 added. Several revised data points throughout the data.

Documentation added 2015-10-29

The complete updated JASL data through to 2014 has been loaded onto the database. Data supplier has also been updated from the Meteorological Station, Maldives to UHSLC.

Documentation added 2015-12-08

After consulting the UH levelling sheets it became apparent that the original RLR diagram was prepared using the figures from the first levelling in 1987.The original benchmark '2' has since been destroyed. Primary benchmark since the 2002 levelling and stable through to the 2012 levelling is BM 4 3.656m above the Tide Staff Zero.

Data Authority

University of Hawaii
Department of Oceanography Division of Natural Sciences
1000 Pope Road
Honolulu
Hawaii 96822