QUALITY ASSESSMENT OF SEA LEVEL DATA by the UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER JOINT ARCHIVE FOR SEA LEVEL updated: 23 Aug 2019 Station : Nain Latitude: 56 33.0N Country : Canada Longitude: 061 41.0W JASL # : 833A Time Meridian: 060W (GMT - 4 hr) GLOSS # : 224 Originator #:01430 NODC #: 75066101 Contributor : Marine Environmental Data Service Dept. of Fisheries and Oceans S12082-200 Kent St. Ottawa, Ontario CANADA K1A-OE6 Originator : Dept. of Fisheries Atlantic Tidal Section BIO, P.O. Box 1006 Dartmouth, N.S. CANADA B2Y 4A2 Original Data: analog (OTT), digital (TATS) Instrmnt Type: 1963-1988: float/well (OTT) 2001-: float/well gauge with bubbler backup; tidal acquisition telemetry system (TATS) Digitzd Intvl: 1963-1988: hourly 1/2001 - 14/Mar/2006: 15 min 15/Mar/2006 - : 1 min Present Data : Hourly, daily, and monthly values obtained by: Hourly : spot hourly 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 : 17 Oct 1963 - 31 Dec 2018 Gaps > 1 mon : 20 Nov 1968 - 22 Jan 1969;01 Sep 1970 - 01 Oct 1970 01 Mar 1973 - 09 Aug 1973;24 Aug 1973 - 01 Jan 1974 01 Feb 1974 - 07 Aug 1975;23 Nov 1975 - 24 Jul 1976 29 Nov 1976 - 02 Feb 1977;24 Mar 1977 - 01 May 1977 30 Jul 1977 - 02 Sep 1977;18 Sep 1977 - 01 Nov 1977 25 Nov 1977 - 03 Aug 1978;24 Sep 1978 - 12 Sep 1979 01 Nov 1979 - 24 May 1979;30 May 1980 - 01 Aug 1980 01 Dec 1980 - 25 Sep 1983;01 Nov 1983 - 02 Aug 1985 01 Oct 1985 - 20 Jul 1986;30 Sep 1986 - 03 Nov 1986 30 Nov 1986 - 04 Jan 1987;14 Mar 1987 - 21 Aug 1987 01 Jan 1988 - 09 Aug 1988;01 Dec 1988 - 04 Oct 2001 20 Oct 2002 - 14 Jan 2003;11 Dec 2003 - 12 Jan 2004 25 Feb 2005 - 29 Mar 2005;10 Aug 2006 - 11 Sep 2006 14 Jun 2007 - 16 Jul 2007;29 Aug 2007 - 11 Nov 2007 10 Feb 2008 - 02 May 2008;15 Aug 2008 - 01 Dec 2008 11 Jul 2009 - 16 Aug 2009;15 Nov 2012 - 10 Feb 2013 Time Refernce: GMT (hours 00-23) Space-filler Flag :-9999 Units : millimeters Missing Data Flag : 9999 Existing : Yes Operational : Yes Sat. Trans. : Yes Distribution : 1963-2018 Refernce Levl: All heights have been referred to the station tide staff zero which is linked to fixed benchmarks. BM 'yard' Elevation 8.680m above Chart Datum. A CHS tablet set vertically in top of rock outcrop in the Moravian Mission yard, 14m south of the SE corner of the minister's residence & 2m W of the mission boarding house. Benchmark relationships: 1963-1981 BM 'yard' elevation 7.462m above Chart Datum 1981-1989 BM 'yard' elevation 8.680m above Chart Datum Auxiliary benchmarks: 86F9000: Elevation 5.925m above Chart Datum 'man hole key': Elevation 7.974m above Chart Datum Comment : The timing has lower quality 1963-1985. Daily means compared to CMEMS altimeter suggests stable reference level 2001-2018. CI MISSING REPLACED GAPS QUESTIONABLE YEAR (%) DATA OR BAD DATA FLUCTUATIONS ---- --- -------------------- --------------- -------------------- 1963 21 none none see comment above 1964 96 32-36,223-226,234- none see comment above 237,242-245 1965 93 213-215,241-263 none see comment above 1966 100 none none see comment above 1967 94 50-73 none see comment above 1968 86 92-103,325-266 none see comment above 1969 94 1-22 none see comment above 1970 89 8-13,22-26,244=274 none see comment above 1971 98 335-341 none see comment above 1972 100 none none see comment above 1973 20 60-221,236-365 none see comment above 1974 9 1,32-365 none see comment above 1975 26 1-219,306-309,311- (06)269-(00)270 see comment above 321,327-365 1976 25 1-206,210-211,231- (13)241-(23)241 see comment above 232,250-277,295-300, (21)302-(16)303 334-366 1977 44 1-33,39-40,60-70,74- (06)072-(20)072 see comment above 81,83-121,211-245, 261-305,329-365 1978 14 1-215,260-261, none see comment above 267-365 1979 11 1-255,263-274,305- (06)275-(13)275 see comment above 365 (07)301-(20)301 1980 27 1-145,151-214,244- none see comment above 253,299-320,336-366 1981 0 1-365 none see comment above 1982 0 1-365 none see comment above 1983 10 1-268,305-365 none see comment above 1984 0 1-366 none see comment above 1985 17 1-214,274-365 none see comment above 1986 23 1-201,230-231,261- (01)224-(20)224 none 269,273-307,318-323, 330-365 1987 41 1-4,6-13,30-32,42- none none 60,73-233,339-361 1988 26 1-222,314-333, none none 336-366 1989 0 1-365 none none 1990 0 1-365 none none 1991 0 1-365 none none 1992 0 1-366 none none 1993 0 1-365 none none 1994 0 1-365 none none 1995 0 1-365 none none 1996 0 1-366 none none 1997 0 1-365 none none 1998 0 1-365 none none 1999 0 1-365 none none 2000 0 1-366 none none 2001 24 1-277 none none 2002 80 293-365 (14)247-(12)248 none 2003 89 1-14,45-52,345-365 none none 2004 76 1-12,123-127,130- 139,142-145,147-153, 157-162,165-169,172- 176,179-182,225-246, 282-293,342-351,361- 363 2005 83 3-31,56-88,357-358 (11)050-(08)051 none (04)089-(03)090 (07)359-(19)359 2006 83 12-25,30-33,42-44, (05)037-(04)038 none 49-50,222-254,287- (10)038-(05)039 289,340-348 (08)211-(04)212 2007 60 165-197,202-315, (05)038-(15)038 none 364-365 (15)339-(13)340 2008 33 1-17,41-123,146-171, none none 182-196,228-336 2009 90 192-228,272-273, none none 298-300 2010 99 281-283 none none 2011 99 296-300 none none 2012 87 234-236,320-366 none 23-25,39-45,51-57, 67-72,82-85,95-101, 109-115,122-132 2013 81 1-41,78-104,326-327 none none 2014 99 261-266 none 2-5,15-19,30-36,44- 53,59-66,72-81,87- 94,103-151 2015 99 278-283 none 22-25,35-39,50-55, 63-69,78-84,91-99, 106-112,121-125 2016 100 none none none 2017 100 none none none 2018 100 none (23)303-(19)304 none