QUALITY ASSESSMENT OF SEA LEVEL DATA by the UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER JOINT ARCHIVE FOR SEA LEVEL updated: 03 Dec 2019 Station : Hobart Latitude: 42 52.6S Country : Australia Longitude: 147 20.5E JASL # : 339A Time Meridian: 150E (GMT + 10 hr) GLOSS # : none Originator #: 61220 NODC #: 34142701 Contributor : National Tidal Centre, Bureau of Meteorology PO Box 421 Kent Town SA 5071 South Australia AUSTRALIA Originator : Tasmania Ports Corporation, www.tasports.com.au Original Data: digital Instrmnt Type: Siemens Hart LU Utrasonic, 7ML52211BB11, 6m spsn Digitzd Intvl: five minute Present Data : Hourly, daily, and monthly values obtained by: Hourly : filter with cutoff of 2 hours 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 2018 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 03 Oct 2004 - 16 Nov 2004;10 Jun 2006 - 24 Jul 2006 27 Sep 2006 - 25 Nov 2006;01 Jan 2007 - 31 Jan 2007 31 Jul 2007 - 31 Aug 2007;30 Sep 2007 - 02 Mar 2009 Time Refernce: GMT (hours 00-23) Space-filler Flag :-9999 Units : millimeters Missing Data Flag : 9999 Existing : Yes Operational : Yes Sat. Trans. : No Distribution : 1985-2018 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. Vertical Reference Frame: Chart Datum +/- 2mm TGBM Name/Number: Geodetic Datum of Aust (GDA94 & MGA94) 2.689m below BM 17 (MBH No.17) SPM 194 brass pin in concrete with steel cover box. 0.00m LAT (2006-). 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 TO USERS OF NAT. TIDAL CENTRE DATA: As a user of this information, you are deemed to have read and accepted the conditions described in the Copyright Notice and Disclaimer at: http://www.bom.gov.au/other/copyright.shtml 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 1-295 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 2000 97 165-168,182-185, (06)041-(20)041 none 314-321 (11)179-(23)179 2001 97 91-93,239-247 none none 2002 99 3-8 (01)360-(22)360 none 2003 100 none none none 2004 75 121-153,212-229, none none 277-321 2005 95 78-80,143-146,208- none none 221,270-273 2006 71 161-205,270-329 none none 2007 52 1-31,174-193,212- none none 243,257-260,273-365 2008 0 1-366 none none 2009 83 1-61,216-218 (03)201-(13)201 none 2010 97 36-40,58-64 none none 2011 99 337-338 none none 2012 99 43-44 none none 2013 100 none none none 2014 100 none none none 2015 100 none none none 2016 99 1-3,27-28,108-109 (05)023-(21)023 none (07)077-(04)078 (09)078-(21)078 (13)140-(03)141 2017 100 none none none 2018 100 none none none