QUALITY ASSESSMENT OF SEA LEVEL DATA by the UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER JOINT ARCHIVE FOR SEA LEVEL updated: 30 Oct 2000 Station : Hobart Latitude: 42 53.0S Country : Australia Longitude: 147 20.0E JASL # : 339A Time Meridian: 150E (GMT + 10 hr) GLOSS # : none TOGA #: none NODC #: 34142701 Contributor : The National Tidal Facility Flinders University of South Australia GPO Box 2100 Adelaide, 5001, South Australia AUSTRALIA Originator : same Original Data: digital Instrmnt Type: unconfirmed Digitzd Intvl: five minute Present Data : Hourly, daily, and monthly values obtained by: Hourly : filtered 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 : 29 Mar 1985 - 31 Dec 1999 Gaps > 1 mon : 01 Jan 1986 - 22 Oct 1987;08 Feb 1998 - 26 Mar 1998 18 May 1998 - 26 Jun 1998;01 Jan 1999 - 05 Feb 1999 Time Refernce: GMT (hours 00-23) Space-filler Flag :-9999 Units : millimeters Missing Data Flag : 9999 Existing : Yes Operational : Yes Sat. Trans. : No Distribution : 1985-1999 Refernce Levl: The sea level heights are referred to the zero point assigned to the tide staff. Bench mark information is available upon request from the contributors. Comment : The daily and monthly means do not reveal any obvious reference level shifts. The data appear to be of high quality with good timing. 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 ---- --- -------------------- --------------- -------------------- 1985 69 135-142,144-147,181- (03)112-(02)113 none 186,193-203,315-318 (03)168-(01)169 1986 0 1-365 none none 1987 19 none none none 1988 100 none none none 1989 99 257-258 none none 1990 100 none none none 1991 100 none none none 1992 100 none none none 1993 100 none none none 1994 100 none none none 1995 97 48-51,293-303 none none 1996 86 28-33,212-235, none none 341-366 1997 90 1-2,12-14,301-311 none none 1998 71 39-85,138-177, none none 196-217,365 1999 88 1-36,40-42,115-120, none none 164-166,335-337