QUALITY ASSESSMENT OF SEA LEVEL DATA by the UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER JOINT ARCHIVE FOR SEA LEVEL updated: 19 Sep 2020 Station : Oil Platform Harvest, CA Latitude: 34 28.1N Country : USA Longitude: 120 40.4W JASL # : 594A Time Meridian: 120W (GMT - 8 hr) GLOSS # : none Originator #:9411406 NODC #: 73124001 Contributor : National Ocean Service (NOS) National Ocean. and Atmos. Administration (NOAA) N/OES22 SSMC4, STATION 7109 1305 East West Highway Silver Spring, MD. 20910-3233 Originator : same Original Data: digital Instrmnt Type: Aquatrak acoustic gauge, NOAA Next Generation Water Level Measuring System (NGWLMS) Digitzd Intvl: six-minute NGWLMS sampling is a three-minute average Present Data : Hourly, daily, and monthly values obtained by: Hourly : spot sampling on the hour 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 : 01 Aug 1995 - 31 Dec 2019 Gaps > 1 mon : 02 Nov 1993 - 31 Jul 1995;01 Apr 1996 - 28 Feb 1999 31 Mar 1999 - 31 Dec 2001;01 Feb 2003 - 30 Apr 2003 01 Jul 2003 - 31 Dec 2003;01 Oct 2004 - 31 Oct 2004 01 Dec 2011 - 31 Dec 2011;01 Oct 2012 - 31 Dec 2012 01 Jun 2014 - 05 Nov 2014 Time Refernce: GMT (hours 00-23) Space-filler Flag :-9999 Units : millimeters Missing Data Flag : 9999 Existing : Yes Operational : Yes Sat. Trans. : Yes Distribution : 1992-2019 Refernce Levl: All heights have been referred to the station tide staff zero which is linked to fixed bench marks. A constant of 10000 mm was subtracted from the original NOS file to fit the JASL format. Comment : The daily and monthly means reveal no apparent reference level changes or trends. CI MISSING REPLACED GAPS QUESTIONABLE YEAR (%) DATA OR BAD DATA FLUCTUATIONS ---- --- -------------------- --------------- -------------------- 1992 63 none none none 1993 84 306-365 none none 1994 0 1-365 none none 1995 42 none none 244-365 1996 25 23-24,73-74,92-366 (20)011-(07)012 1-22,63-90 (20)017-(04)018 (05)074-(15)074 1997 0 1-365 none none 1998 0 1-365 none none 1999 8 1-60,91-365 none 65-68,84-88 2000 0 1-366 none none 2001 0 1-365 none none 2002 100 none none none 2003 25 32-120,182-365 none none 2004 92 275-305 none none 2005 100 none none none 2006 96 335-349 none none 2007 100 none none none 2008 98 61-68 none none 2009 100 none none none 2010 100 none none none 2011 86 101-122,335-365 none none 2012 75 275-366 none 82-83 2013 92 85-95,202-220 none 55,96-97,220-337 2014 57 152-309 none none 2015 100 none none none 2016 100 none none none 2017 100 none none none 2018 100 none none none 2019 100 none none none