GLOSS Station Handbook

Station information sheet

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General                                  
GLOSS number335
Station name

Takoradi

CountryGhana
Time zoneGMT ( hours 00-23)
Latitude (+ve N)4.88333
Longitude (+ve E)-1.75
Observation period(s)4 January 2007 to 30 April 2010, Time span of data 1929- 2009 (psmsl)
Responsible countryGhana
Authority responsible
for tide gauge
Survey Department, P.O. Box 191, Cantonments, Accra, Ghana
Instrumentation 
Float
Pressure
Bubbler
Acoustic
Radar
Data
Additional parametersThe gauge at Takoradi GLOSS station is based on bottom- pressure measurements. Temperature output is provided and absolute pressure is sampled at 2Hz and averaged.
Data acquisition rateEvery 15 min.
High frequency data at UHSLCDownload qa231a.dmt from UHSLC   Download documentation qa231a.dmt from UHSLC   Format documentation for UHSLC data
Additional parameters (real-time)The gauge at Takoradi GLOSS station is based on bottom- pressure measurements. Temperature output is provided and absolute pressure is sampled at 2Hz and averaged.
Benchmarks 
Tide gauge benchmarksTGBM GCS BM H4 Main Benchmark. Marker on tide gauge, close to radar mount
Benchmark relationshipsChart Datum= 3.086m below TGBM GCS BM H4 Chart Datum= 3.292m below HB TAK3 Chart Datum= 3.357m below SG1 Chart Datum= 3.415m below SG2 Chart Datum= 3.297m below SGN1 Chart Datum= 6.067m below TKTG Chart Datum= 4.179m below SGN9 Chart Datum= 24.943m below SGN3 Chart Datum= 25.042m below SGW346 Chart Datum= 28.288m below GPS 4C Chart Datum= 30.427m below SGWH1 Chart Datum= 30.642m below SGN4 Chart Datum= 34.451m below GPS1_Roof
Auxiliary benchmarksHB TAK3 Benchmark roughly 10m to the right of the tide gauge SG1 Benchmark roughly 10m to the left of the tide gauge SG2 Near the TKTG GNSS station SGN1 Between tide gauge and harbour entrance, close to a large building TKTG Takoradi Tide Gauge GNSS station - 30m from tide gauge SGN9 At harbour entrance SGN3 On entrance of roundabout from the harbour SGW346 In centre of Roundabout GPS4C Auxiliary marker of TKRD, close to church SGWH1 Pillar in front of Survey Department of Ghana office SGN4 On left side of stairs of Survey Department of Ghana Office GPS1_Roof Marker in roof near TKRD GPS2_roof Marker in edge of roof of TKRD TKRD GNSS station on roof of Survey Department of Ghana Office
Data at PSMSL 
Annual MSL (RLR) dataDownload annual MSL (RLR) data for Takoradi
Annual MSL (RLR) plotView annual MSL (RLR) plot for Takoradi
PSMSL code331
Additional information 
Other relevant informationChart Datum= 34.427 m below GPS2_Roof Chart Datum= 36.755m below TKRD Data from the start of series until May 2009 refer to local Chart Datum. After this, the station was relocated. The station started operating again in January 2010, but to a different, yet to be established datum.
Last updated2010-11-04
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