Christmas (Australia) Data Quality Assessment
Quality Assessment of sea level data by the TOGA Sea Level Center/National Oceanographic Data Centre Joint Archive for Sea Level.
| Station | Christmas | Latitude | 10° 25.0' S |
|---|---|---|---|
| Country | Australia | Longitude | 105° 40.0' E |
| JASL # | 170A | Time Meridian | 105E (GMT + 7 hr) |
| GLOSS # | 047 | TOGA # | I049 |
| NODC # | 31100501 |
| Contributor: | CSIRO Division of Oceanography GPO Box 1538 Hobart, Tasmania 7001 |
|---|---|
| Originator: | Same |
| Original Data: | Digital |
| Instrument Type: | Leupold Stevens analog-to-digital recorder |
| Digitzd Interval: | 6 minute |
| Present Data: | Hourly, daily, and monthly values obtained by: |
| Hourly: | Three-point Hanning centred on the hour |
| Daily: | 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 |
| Monthly: | Simple average of all daily values; calculated if 7 or fewer days are missing |
| Span of Data: | 28 September 1986 - 09 October 1987 |
| Gaps > 1 Month: | 13 March - 18 April 1987; 10 June - 25 July 1987 |
| Time Reference: | GMT (hours 00-23) |
| Space-filler Flag: | -9999 |
| Units: | Millimeters |
| Missing Data Flag: | 99999 |
| Reference Level: | All heights have been referred to the station tide staff zero which is linked to fixed bench marks. |
| Comment: | The daily and monthly means reveal no apparent reference level changes or trends. However, comparisons with Cocos Island suggest a reference level shift of about +10 cm for July - October, 1987. |
