Rarotonga (Cook Islands) Site History
History Summary
| Station | Rarotonga |
|---|---|
| Country | Cook Islands |
| Latitude | 21° 12.4' S |
| Longitude | 159° 46.5' W |
| GLOSS No | 139 |
| Time Reference | GMT (hours 00-23) |
| Contributors | UH Sea Level Center (1977-1993)
National Tidal Facility (NTF) 1993- Flinders University of South Australia GPO Box 2100, Adelaide, 5001, South Australia. |
| Instrument Type | 1. (Apr 1977 - Dec 1984 )Fischer and Porter Analog-to-Digital Recorder (ADR)
2. (Dec 1984-present) Leupold and Stevens Analog-to-Digital Recorder (ADR); 3. (Dec 1984-1992) Handar Encoder (ENC) 4. 1993 - present SEAFRAME Gauge (Next Generation Water Level Measuring System (NGWLMS)) |
| Primary gauge | ADR: 1977-1990
ENC: 1991-1992 NGWLMS: 1993-present |
| Site of Gauge | The gauge is situated about half way along the pier |
| Observational periods | 1977 - 2001 |
Reference Level
All heights have been referred to the station tide staff zero which is linked to fixed benchmarks.
Quality Assessment by UH Sea Level Centre
Comment
The daily and monthly means reveal no apparent changes in the reference level.
The severe weather events of 22-26 February 1986 1 - 4 January 1987 and 9 December 1997 caused data loss and questionable fluctuations.
| Year | CI(%) | Missing Data | Replaced Gaps or Bad Data | Questionable Fluctuations |
|---|---|---|---|---|
| 1977 | 69 | none | none | none |
| 1978 | 98 | 28-30,56-60 | none | 55-56 |
| 1979 | 97 | 16-24,62-64 | none | none |
| 1980 | 91 | 8-14,142-143,167-189 | none | none |
| 1981 | 94 | 15-16,49-69 | none | none |
| 1982 | 97 | 66-69,117-119,260-264 | none | none |
| 1983 | 94 | 26-31,114-117,262-264,340-349 | none | none |
| 1984 | 96 | 12-20,27-31 | none | 356-366 |
| 1985 | 100 | none | none | none |
| 1986 | 100 | none | none | 57-58 |
| 1987 | 88 | 2-45 | none | none |
| 1988 | 100 | none | none | none |
| 1989 | 100 | none | none | none |
| 1990 | 100 | none | none | 45-47,334 |
| 1991 | 100 | none | none | none |
| 1992 | 100 | none | none | none |
| 1993 | 86 | 001(00)-079(00) | none | none |
| 1994 | 99 | 364(00)-365(23) | none | none |
| 1995 | 97 | 001(00),090(15)-093(00),181(18)-188(00) | none | none |
| 1996 | 98 | 031(01)-032(21),034(04)-036(07),117(00)-118(12),297(20)-298(21) | none | none |
| 1997 | 99 | 343(03)-344(03) | none | none |
| 1998 | 94 | 296(19b)-316(23) | none | none |
| 1999 | 100 | none | none | 81-87,92-103,110-114 |
| 2000 | 100 | none | none | none |
| 2001 | 100 | none | none | none |
