QUALITY ASSESSMENT OF SEA LEVEL DATA by the UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER JOINT ARCHIVE FOR SEA LEVEL updated: 03 Jan 2020 Station : Andenes Latitude: 69 19.0N Country : Norway Longitude: 16 09.0E JASL # : 800A Time Meridian: 015E (GMT + 1 hr) GLOSS # : 322 Originator #: NODC #: 16019601 Contributor : Norwegian Hydrographic Services (NHS) Oceanographic Group PO Box 60 N-4011 Stavanger NORWAY Originator : same Original Data: digital Instrmnt Type: 09 10 1991: Scan-Matic gauge 02 02 2001: Sutron gauge Digitzd Intvl: 10 minute Present Data : Hourly, daily, and monthly values obtained by: Hourly : Hanning 3-pt filter centered 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 : 09 Oct 1991 - 31 Dec 2018 Gaps > 1 mon : none Time Refernce: GMT (hours 00-23) Space-filler Flag :-9999 Units : millimeters Missing Data Flag : 9999 Existing : Yes Operational : Yes Sat. Trans. : unconfirmed Distribution : 1991-2018 Refernce Levl: Near-realtime data relative to Chart Datum. Historic data are relative to Tide Gauge Zero (TGZ) TGZM: L7 N42 Auxiliary BM : L7 N33 1.354m below TGBM Auxiliary BM : L7 N34 1.782m below TGBM Normalnull 1954: 3.245m below TGBM TGZ: 5.245m below TGBM TGZ = Chart Datum + 655 mm. Comment : Data from 1940-1986 are held by the originators yet are of bad quality and should not be used in time series analysis. The 2020-01 JASL update replaces 2007-2014, after NHS performed systematic error corrections. Use of the data is licensed through Creative Commons Attribution 4.0 international (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/deed.en CI MISSING REPLACED GAPS QUESTIONABLE YEAR (%) DATA OR BAD DATA FLUCTUATIONS ---- --- -------------------- --------------- -------------------- 1991 16 291-316 none none 1992 100 none none none 1993 100 none none none 1994 98 171-179 none none 1995 100 none none none 1996 100 none none none 1997 99 140-142 none none 1998 98 351-364 none none 1999 98 118-121,131-133, none none 173-174 2000 100 none none none 2001 100 none none none 2002 100 none none none 2003 99 346-350 none none 2004 100 none none none 2005 100 none none none 2006 100 none none none 2007 100 none none none 2008 100 none none none 2009 100 none none none 2010 100 none none none 2011 100 none none none 2012 100 none none none 2013 100 none none none 2014 100 none none none 2015 100 none none none 2016 100 none none none 2017 100 none none none 2018 100 none none none