Durban (South Africa) 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 | Durban | Latitude | 29° 53.0' S |
|---|---|---|---|
| Country | South Africa | Longitude | 031° 00.0' E |
| JASL # | 181A | Time Meridian | 030° E (GMT + 2 hr) |
| GLOSS # | 013 | TOGA # | I012 |
| NODC # | 32039101 |
| Contributor: | Directorate of Hydrography, Maritime Headquarters, Private Bag Retreat, 7965 South Africa | ||||||||||||||||
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| Originator: | Same | ||||||||||||||||
| Original Data: | Analog | ||||||||||||||||
| Instrument Type: | Float and stilling well type, Kent | ||||||||||||||||
| Digitized Interval: | Hourly | ||||||||||||||||
| Present Data: | Hourly, daily, and monthly values obtained by: | ||||||||||||||||
| Hourly: | Manually filtered raw data | ||||||||||||||||
| 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: | 30 September 1970 - 31 December 1987 | ||||||||||||||||
| Gaps > 1 Month: | 11 February - 07 May 1974; 30 March - 18 May 1981; 13 July - 23 November 1981; 31 December 1984 - 16 July 1985 | ||||||||||||||||
| Time Reference: | GMT (hours 00-23) | ||||||||||||||||
| Space-filler Flag: | -9999 | ||||||||||||||||
| Units: | Millimetres | ||||||||||||||||
| Missing Data Flag: | 99999 | ||||||||||||||||
| Reference Level: | All heights have been referred to the station tide staff zero which is linked to fixed bench marks. The original data were adjusted at JASL with levelling information provided by the contributors to the 1987 data as follows:
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