QUALITY ASSESSMENT OF SEA LEVEL DATA by the UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER JOINT ARCHIVE FOR SEA LEVEL updated: 01 Oct 2020 Station : Woods Hole,MA Latitude: 41 31.4N Country : USA Longitude: 070 40.3W JASL # : 742A Time Meridian: 075W (GMT - 5 hr) GLOSS # : none Originator #:8447930 NODC #: 74071001 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 : NOS Original Data: analog (standard) digital (ADR and NGWLMS) Instrmnt Type: 1) standard float and well gauge 1957-1974 2) analog-to-digital (ADR) recorder, float/wire 1975-1993 3) Aquatrak acoustic sensor/protective well, NOAA Next Generation Water Level Measuring System (NGWLMS) (1994-) Digitzd Intvl: six-minute (adr and NGWLMS) NGWLMS sampling is three-minute average Present Data : Hourly, daily, and monthly values obtained by: Hourly : The original digitizing interval was hourly (standard); spot sampling on the hour (adr/NGWLMS) 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 Jan 1957 - 31 Dec 2019 Gaps > 1 mon : 06 Mar 1960 - 12 May 1960;02 Jan 1964 - 22 Jul 1964 23 Aug 1965 - 02 Mar 1966;30 Mar 1966 - 05 May 1966 15 Feb 1967 - 18 Aug 1969;30 Mar 1994 - 13 Jun 1994 27 Aug 1999 - 31 Oct 1999;01 Feb 2003 - 28 Feb 2003 01 Dec 2007 - 25 Mar 2008 Time Refernce: GMT (hours 00-23) Space-filler Flag :-9999 Units : millimeters Missing Data Flag : 9999 Existing : Yes Operational : Yes Sat. Trans. : Yes Distribution : 1957-2019 Refernce Levl: All heights have been referred to the station tide staff zero which is linked to fixed bench marks. While standard mechanical or ADR instrument was the primary gauge, leveling calibration factors were applied monthly based on tide staff comparisons. Comment : The daily and monthly means reveal no apparent reference level changes or trends. This site is at Woods Hole, Buzzards Bay, MA. CI MISSING REPLACED GAPS QUESTIONABLE YEAR (%) DATA OR BAD DATA FLUCTUATIONS ---- --- -------------------- --------------- -------------------- 1957 92 1,122-152 none none 1958 98 49-56 none none 1959 100 none none none 1960 82 66-133 (20)142-(03)143 none 1961 100 none none none 1962 100 none none none 1963 99 34-37 (21)047-(15)048 none 1964 41 2-204,248-263 none none 1965 46 88-154,167-169, none 154-160 235-365 1966 38 1-61,89-125 none none 1967 13 46-365 none none 1968 0 1-366 none none 1969 37 1-230 none none 1970 96 32-33,35-36,169-182 (02)037-(10)037 none (04)038-(11)038 1971 95 20-22,34-35,38-50, (08)019-(15)019 none 233-235 (19)019-(04)020 (10)031-(03)032 (14)032-(02)033 (07)033-(04)034 (19)056-(10)057 (17)243-(15)244 1972 100 none none none 1973 100 none (12)192-(20)192 64-66 1974 97 173-175,274-284 (04)172-(14)172 none (05)176-(12)176 (21)176-(13)177 1975 100 none none none 1976 100 none none none 1977 100 none none none 1978 100 none (13)213-(12)214 none 1979 100 none (07)180-(15)180 none (19)180-(03)181 (20)181-(04)182 (12)182-(19)182 (21)182-(05)183 (09)183-(19)183 (10)184-(17)184 (11)185-(18)185 (19)208-(03)209 (20)211-(04)212 1980 100 none none none 1981 100 none none none 1982 100 none none none 1983 100 none none none 1984 100 none none none 1985 100 none none none 1986 100 none none none 1987 99 113-116 (19)184-(03)185 none 1988 99 217-219,320-323 (19)190-(16)191 none (01)215-(14)215 (17)295-(14)296 1989 99 113-116 (17)147-(16)148 none (05)196-(04)197 1990 98 216-220,230-233 (02)270-(11)270 none (23)338-(17)339 1991 91 355-358 (09)014-(16)014 none (10)015-(17)015 (07)122-(14)122 (06)235-(19)235 1992 100 none none none 1993 100 none (03)340-(21)340 none 1994 79 89-164,211-213 (00)210-(07)210 none 1995 100 none (18)244-(17)245 none 1996 100 none none none 1997 95 91-92,130-132,146- none none 152,337-346 1998 100 none none none 1999 82 239-304 none none 2000 100 none none none 2001 100 none none none 2002 100 none none none 2003 100 none none none 2004 100 none none none 2005 100 none none none 2006 100 none none none 2007 92 335-365 none none 2008 74 1-85,341-353 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 2019 100 none none none