QUALITY ASSESSMENT OF SEA LEVEL DATA by the UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER JOINT ARCHIVE FOR SEA LEVEL updated: 18 Aug 2000 Station : Madang Latitude: 05 12.0S Country : Papua New Guinea Longitude: 145 48.0E JASL # : 066A Time Meridian: 150E (GMT + 10 hr) GLOSS # : none TOGA #: P023 NODC #: 30145501 Contributor : The National Tidal Facility Flinders University of South Australia GPO Box 2100 Adelaide, 5001, South Australia AUSTRALIA Originator : CSIRO Division of Oceanography GPO Box 1538 Hobart, Tasmania 7001 AUSTRALIA Original Data: digital Instrmnt Type: Leupold Stevens analog-to-digital recorder Digitzd Intvl: 15 minutes Present Data : Hourly, daily, and monthly values obtained by: Hourly : simple Gaussian filter 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 : 22 Aug 1984 - 31 Dec 1998 Gaps > 1 mon : 26 Sep - 12 Nov 1991;26 Sep 1991 - 12 Nov 1991 12 Nov 1992 - 25 May 1993;31 May 1994 - 31 Jan 1995 28 Dec 1995 - 10 Mar 1997;15 Jan 1998 - 17 Feb 1998 Time Refernce: GMT (hours 00-23) Space-filler Flag :-9999 Units : millimeters Missing Data Flag : 9999 Existing : Yes Operational : Yes Sat. Trans. : No Distribution : 1984-1998 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 the nearest station, Lae. SPECIAL NOTE FROM THE DATA CONTRIBUTORS: Supply of sea level data subject to the following conditions: i) When any data supplied by the National Tidal Facility is used in any publication or report, the origin of such data shall be acknowledged in that publication or report in the following approved form:-- "Tidal {predictions) for {port} {are} supplied {constants} {station} {is} {material} {...} by the National Tidal Facility, The Flinders University of South Australia, Copyright reserved." ii) All material is supplied in good faith and is believed to be correct. It is supplied on the condition that no warranty is given in relation thereto, that no responsibility or liability for errors or omissions is, or will be, accepted and that the recipient will hold the Flinders Univer- sity of South Australia and the National Tidal Facility free from all such responsibility or liability and from all loss or damage incurred as a consequence of any error or omission. iii) The acceptance of material and computations from the National Tidal Facility of the Flinders University of South Australia will be deemed to include acceptance of the conditions of supply. CI MISSING REPLACED GAPS QUESTIONABLE YEAR (%) DATA OR BAD DATA FLUCTUATIONS ---- --- -------------------- --------------- -------------------- 1984 36 none none none 1985 100 none none none 1986 100 none none none 1987 94 137-159 none none 1988 100 none none none 1989 100 none none none 1990 100 none none none 1991 87 269-316 none none 1992 87 317-366 none none 1993 61 1-145 none none 1994 40 1-3,6-10,151-365 none none 1995 91 1-31,362-365 none none 1996 0 1-366 none none 1997 79 1-69,153-155,203-211 none none 1998 91 15-48 none none