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 : Lae Latitude: 06 44.0S Country : Papua New Guinea Longitude: 146 59.0E JASL # : 067A Time Meridian: 150E (GMT + 10 hr) GLOSS # : none TOGA #: P032 NODC #: 30146601 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 : 31 Sep 1984 - 27 Feb 1998 Gaps > 1 mon : 30 Jan 1988 - 10 Feb 1989;01 Jul 1990 - 06 Sep 1990 31 Jul 1995 - 20 Mar 1996;01 Dec 1997 - 31 Dec 1997 Time Refernce: GMT (hours 00-23) Space-filler Flag :-9999 Units : millimeters Missing Data Flag : 9999 Existing : No Operational : No Sat. Trans. : No Distribution : 1984-1997 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, Madang. The mean level drops substantially on 1 Jan 1998. The data from 1/1/98-2/27/98 is presently not publically available until the level shift is resolved. 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 33 none none none 1985 100 none none none 1986 86 104-138,109-111, (01)107-(14)107 none 112-113,113-137, (17)107-(23)107 194-216 (01)108-(15)108 (07)109-(13)109 (05)111-(15)111 1987 100 none none none 1988 8 30-366 none none 1989 88 1-41,177-179 none none 1990 76 173-178,183-249, none none 349-365 1991 99 163-165,236-238 none none 1992 97 31-36,120-121,176- none none 180,332-335 1993 98 34-36,306-309, none none 357-362 1994 93 68-70,172-195 none 141-150 1995 51 155-181,212-365 none none 1996 78 1-80,120-122 none none 1997 92 335-365 none none 1998 16 none none none