Ascension (Atlantic Ocean) Phase 1 Site History
History Summary
| Station Name | Ascension Phase 1 |
|---|---|
| Latitude | 7.917° S |
| Longitude | 14.417° W |
| Country | U.K. |
| Gloss No | 263 |
| Time Reference | GMT(00-23 hours) |
| Contributor | Proudman Oceanographic Laboratory, Joseph Proudman Building, 6 Brownlow Street, Liverpool, L3 5DA. U.K. |
| Observation Periods | April 1983 - March 1993 November 1993 - January 1995 |
| Instrument Type | Aanderaa tide gauge |
| Site of Gauge | Clarence Bay, Ascension |
Note
These data should not be confused with the Ascension Phase 2 data, recorded at English Bay. There are no links between these two data sets.
Parameters Recorded
| Period | CI(%) | Parameters | Sample Interval |
|---|---|---|---|
| 04 1983 - 05 1985 | 99.4 | ST,SSP | 60 mins |
| 05 1985 - 10 1985 | 100 | ST,SSP | 60 mins |
| 10 1985 - 07 1986 | 100 | ST,SSP | 60 mins |
| 07 1986 - 05 1987 | 100 | ST,SSP | 60 mins |
| 05 1987 - 05 1988 | 99.8 | ST,SSP | 60 mins |
| 05 1988 - 01 1989 | 100 | ST,SSP | 60 mins |
| 01 1989 - 01 1990 | 100 | ST,SSP | 60 mins |
| 01 1990 - 09 1991 | 99.8 | ST,SSP | 60 mins |
| 10 1991 - 03 1993 | 100 | ST,SSP | 60 mins |
| 11 1993 - 01 1995 | 100 | ST,SSP | 60 mins |
where:
- ST = TEMPPR01 = Sea Temperature
- SSP = PRSTPS01 = Sub Surface (total) Pressure
The parameter SSP listed above should NOT be interpreted as Sea Level. Firstly, SSP includes pressure loading from the height of water above the sensor and from the air pressure above that. Secondly, many of the sensors have long term drift.
Datum
Datum information is not available.
Please Note. Datum can drift WITHIN AND BETWEEN files.
Quality Assessment
All data have been tidally analysed and constants and residuals checked. Records have been visually inspected for spikes and timing shifts.
| Period | Parameters | Comments |
|---|---|---|
| 04 1983 - 05 1985 | All | Gap: (1984) 099-101,320-322 |
| SSP | Marked: (1995) 018 | |
| ST | Gap: (1983) 112-117, (1984)255-(1985)141 | |
| 05 1985 - 10 1985 | All | These data have uncertain timings, therefore must not be used by anyone, for tidal constant studies. |
| 10 1985 - 07 1986 | All | None |
| 07 1986 - 05 1987 | All | None |
| 05 1987 - 05 1988 | All | Gap: (1988) 141-142 |
| 05 1988 - 01 1989 | All | Marked: (1988) 221 |
| 01 1989 - 01 1990 | ST | Marked: (1989) 077-102 |
| 01 1990 - 09 1991 | All | Gap: (1991) 250 |
| 10 1991 - 03 1993 | All | Marked: (1991) 288 |
| 11 1993 - 01 1995 | All | None |
