QUALITY ASSESSMENT OF SEA LEVEL DATA by the UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER JOINT ARCHIVE FOR SEA LEVEL Station : Mocamedes Latitude: 15 11.5S Country : Angola Longitude: 012 08.7E JASL # : 238A Time Meridian: 015E (GMT + 1 hr) GLOSS # : none TOGA #: none NODC #: 31015201 Contributor : Instituto Hidrografico Marinha Rua das Trinas 49-P-1296 Lisboa Codex Lisbon PORTUGAL Originator : same Original Data: analog Instrmnt Type: Float and well, A.OTT Digitzd Intvl: hourly Present Data : Hourly, daily, and monthly values obtained by: Hourly : the original data were hourly Daily : 119-point convolution filter (Bloomfield, 1976) centered 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 Jun 1971 - 13 May 1975 Gaps > 1 mon : none Time Refernce: GMT (hours 00-23) Space-filler Flag :-9999 Units : millimeters Missing Data Flag : 9999 Existing : No Operational : No Sat. Trans. : No Distribution : 1971-1975 Refernce Levl: 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 and agree well with Lobito for same period. CI MISSING REPLACED GAPS QUESTIONABLE YEAR (%) DATA OR BAD DATA FLUCTUATIONS ---- --- -------------------- --------------- -------------------- 1971 49 186-188,362-365 (23)271-(22)272 336-339,352-362 1972 94 1-18,326-330 none 32-33,47-48,58-63, 71-78,321-325 1973 100 none (18)066-(07)067 none 1974 100 none none none 1975 36 none none none