GLOSS Station Handbook

Station information sheet

GLOSS number81
Station name


Time zone135E, GMT + 9 hrs
Latitude (+ve N)26.21666
Longitude (+ve E)127.66666
Observation period(s)1966-
Responsible countryJapan
Authority responsible
for tide gauge
Oceanographical Division, Climate and Marine Department, Japan Met. Agency, 3-4, Otemachi- 1, Chiyoda-ku, Tokyo 100, Japan
GLOSS contactJapan
Committed to GLOSSYes
Location mapView location map for GLOSS station Naha
Digital dataYes
Additional parametersSea temperature
Data acquisition rateContinuous recording
Fast delivery data at UHSLCDownload h355.dat from UHSLC   Format documentation for UHSLC data
High frequency data at BODCDownload from BODC   View Naha site history   View BODC document #60996  
High frequency data at UHSLCDownload from UHSLC   Download documentation qa355a.dmt from UHSLC   Format documentation for UHSLC data
Real-time data availableYes
Real-time data transmitted
to GLOSS Fast Centre
Real-time data plots from UHSLC
Additional parameters (real-time)Sea temperature
Tide gauge benchmarksJapan Met. Agency Benchmark bolt inside tide gauge hut adjacent to stilling well
Benchmark relationshipsTide Gauge Zero (TGZ) = 5.453m below TGBM (from 1966 onwards)
Auxiliary benchmarksTide Station BM 6.342m above Okinawa height standard (1997).
Data at PSMSL 
Annual MSL (RLR) dataDownload annual MSL (RLR) data for Naha
Annual MSL (RLR) plotView annual MSL (RLR) plot for Naha
MSL methodMean of hourly values
PSMSL code1151
Other relevant codesUHSLC 355
Additional information 
Other relevant informationThe TGBM is on top of the stilling well. Another benchmark is near the station which is used to decide the height of the TGBM and monitor the height of the tide station. This second benchmark is levelled in to the nearest first class benchmark which is part of the network operated by the Geographical Survey Institute, Ministry of Construction. Heights of benchmarks are described as above Tokyo Peil (TP).
Nearest Met. stationOkinawa
Last updated1997-11-20