Funafuti (Tuvalu) Site History
History Summary
| Station | Funafuti |
|---|---|
| Country | Tuvalu |
| Latitude | 08° 31.5'S |
| Longitude | 179° 11.7' E |
| GLOSS No | 121 |
| Time Reference | GMT (hours 00-23) |
| Contributor | UH Sea Level Center
Gaps in 1993-1996 data filled by: The National Tidal Facility (NTF) Flinders University of South Australia GPO Box 2100, Adelaide, 5001, South Australia. Note: The NTF gauge is about 1.5 miles from UH gauge at 08° 30.14' S and 179° 11.70' E |
| Instrument Type | 1. (October 1977 - August 1986) Fischer and Porter Analog-to-Digital Recorder (ADR)
2. (August 1986-present) Leupold and Stevens Analog-to-Digital Recorder (ADR); 3. (August 1986-present) Handar Encoder (ENC) (Primary gauge: ADR:1974-90, ENC 1991-) 4. NTF: Aquatrak acoustic gauge (SEAFRAME) (primary 4/January/1995 onward) |
| Site of Gauge | |
| 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 the UH Sea Level Centre
Comments
The daily and monthly means reveal no apparent changes in the reference level and agree with Honiara and Penrhyn.
Timing accuracy prior to 1984 is no better than plus or minus 8 minutes.
Gaps filled with NTF data noted with '*' if gap length >6 hr. Many shorter gaps filled with NTF data are documented and available from the UHSLC.
| Year | CI(%) | Missing Data | Replaced Gaps or Bad Data | Questionable Fluctuations |
|---|---|---|---|---|
| 1978 | 97 | 162-164,213-216,220-222 | (09)217-(22)217 (03)218-(23)218 | 95-99,115,145-146,201-204,228-233,246-247,252-263,299-308 |
| 1979 | 76 | 39-55,69-71,88-103,191-226,236-239,272-276, 287-290,343-345 | none | 111-116,233-234,250,305-308 |
| 1980 | 86 | 63-80,82-87,135-136,222-223,246-247,345-366 | none | 238-243,268-270,282-283 |
| 1981 | 83 | 1-42,93-95, 115-123,149-153,224-227 | none | 167,177-178,183-184,210-212,343-347 |
| 1982 | 99 | 275-276,296-297 | none | 141-146,256-260,318 |
| 1983 | 93 | 12-17,77-86,125-127,232-237 | none | 160-164,190 |
| 1984 | 100 | none | none | none |
| 1985 | 100 | none | none | none |
| 1986 | 100 | none | none | none |
| 1987 | 100 | none | none | none |
| 1988 | 100 | none | none | none |
| 1989 | 100 | none | none | none |
| 1990 | 100 | none | none | none |
| 1991 | 100 | none | none | none |
| 1992 | 100 | none | none | none |
| 1993 | 100 | none | *(00)182-(23)186 | none |
| 1994 | 100 | none | none | none |
| 1995 | 100 | none | none | none |
| 1996 | 100 | none | none | none |
| 1997 | 100 | none | none | none |
| 1998 | 100 | none | none | none |
| 1999 | 100 | none | none | 339-347,354-356 |
| 2000 | 100 | none | none | 218-223 |
| 2001 | 100 | none | none | none |
