GLOSS Station Handbook

Station information sheet

GLOSS number143
Station name


CountryCook Islands
Time zone150W, GMT - 10hrs
Latitude (+ve N)-8.59
Longitude (+ve E)-158.06666
Observation period(s)1977-
Responsible countryU.S.A.
Authority responsible
for tide gauge
Dr. M. Merrifield, University of Hawaii, Dept. of Oceanography, 1000 Pope Road MSB 307, Honolulu, Hawaii 96822, U.S.A.
GLOSS contactUSA
Committed to GLOSSYes
Digital dataYes
Data acquisition rate15 minutes, filtered to hourly values
Fast delivery data at UHSLCDownload h024.dat from UHSLC   Format documentation for UHSLC data
High frequency data at BODCDownload from BODC   View Penrhyn site history  
High frequency data at UHSLCDownload from UHSLC   Download documentation qa024a.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
Tide gauge benchmarksBM2: SS disc, no markings, at base of radio tower, 72.5ft west of BM1.
Auxiliary benchmarksBM3: SS disc, 'BM3' in concrete, 12ft west of tide staff along quay, 2 inches below surface elevation, concrete block 12x12 inches, 2ft from edge of quay. Likely to be covered by loose sand and rocks. BM1: SS disk marked 'BM 1 1977' in concrete 3ft N of tide well set in base of tide station; in cement supporting Handar antenna. Destroyed Sept 1989. Concrete slab broken later repaired - level has changed.
Data at PSMSL 
Annual MSL (RLR) dataDownload annual MSL (RLR) data for Penrhyn
Annual MSL (RLR) plotView annual MSL (RLR) plot for Penrhyn
MSL methodaverage of daily values
PSMSL code1450
Other relevant codesUHSLC 024
Additional information 
Other relevant informationBackup gauge on site: Handar Encoder (July 1986 - onwards). Daily values calculated using 119-point convolution filter (Bloomfield, 1976) centred on noon applied to the hourly data with respective periods of the 95, 50 and 5% amplitude points at 124.0, 60.2 and 40.2 hours.
Last updated1993-12-05

Related BODC pages

Sea level portal      World Ocean Circulation Experiment (WOCE) — Sea  level
UK Tide Gauge Network     Climate Variability and Predictability (CLIVAR)
GLOSS project page  


Related external links

Global Sea Level Observing System (GLOSS)     Permanent Service for Mean Sea Level (PSMSL)
University of Hawai`i Sea Level Centre (UHSLC)  World Ocean Circulation Experiment (WOCE)


Permanent Service for Mean Sea Level (PSMSL) Global Sea Level Observing System (GLOSS) Station Handbook Intergovernmental Oceanographic Commission (IOC)