QUALITY ASSESSMENT OF SEA LEVEL DATA by the UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER JOINT ARCHIVE FOR SEA LEVEL updated: 20 Aug 2020 Station : Wake Latitude: 19 17.0N Country : USA Trust Longitude: 166 37.0E JASL # : 051A Time Meridian: 180E (GMT + 12 hr) GLOSS # : 105 Originator #:1890000 NODC #: 11169601 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: analog (standard); digital (ADR and NGWLMS) Instrmnt Type: standard mechanical (1950-1974); analog-to-digital (ADR) recorder (1975-1990); Aquatrak acoustic gauge, NOAA Next Generation Water Level Measuring System (NGWLMS) (1991-) Digitzd Intvl: hourly (standard); 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 : 30 May 1950 - 31 Dec 2019 Gaps > 1 mon : 15 Sep - 27 Oct 1952; 01 Sep 1967 - 31 May 1969 1 Jan - 31 Jan 1975; 12 Jan - 1 Mar 1978; 31 Dec 1978 - 24 Feb 1979; 1 Mar 1981 - 21 Aug 1982 14 Oct 2004 - 30 Nov 2004;03 Aug 2007 - 18 Dec 2007 Time Refernce: GMT (hours 00-23) Space-filler Flag :-9999 Units : millimeters Missing Data Flag : 9999 Existing : Yes Operational : Yes Sat. Trans. : Yes Distribution : 1950-2019 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. The high peaks in January 1953 appear to be storm-related. The rise on 15 Sept. 1994 is associated with local wind setup. Notable episodic events: 23-25 May 1960: Tsunami from S.C. Chile 28 Mar 1964: Tsunami from Alaska CI MISSING REPLACED GAPS QUESTIONABLE YEAR (%) DATA OR BAD DATA FLUCTUATIONS ---- --- -------------------- --------------- -------------------- 1950 59 none (19)302-(11)303 none 1951 95 31-49 none none 1952 87 217-223,259-301 (12)102-(11)103 248 1953 98 210-212,264-268 none none 1954 96 190-191,335-341,350- (12)058-(11)059 none 353,355-359 (12)120-(23)120 (12)190-(11)191 (21)363-(19)364 1955 100 none (14)201-(02)202 none (03)353-(14)353 1956 100 none none none 1957 100 none none none 1958 100 none none none 1959 100 none (06)055-(16)055 none (21)330-(05)331 1960 98 153-162 (23)031-(23)031 none (01)033-(20)033 (15)144-(12)145 1961 100 none (19)059-(23)059 none (01)060-(11)060 (10)115-(23)115 (15)181-(23)181 (15)184-(00)185 (16)195-(05)196 (02)298-(14)298 1962 100 none none none 1963 100 none (19)363-(12)364 none 1964 100 none (23)054-(19)055 none (04)088-(01)089 (23)298-(18)299 1965 100 none (12)322-(11)323 none (05)052-(14)052 (22)055-(06)056 1966 100 none none none 1967 67 244-365 (04)216-(00)217 none (04)216-(00)217 1968 0 1-366 none none 1969 100 none (20)213-(12)214 none 1970 100 none (22)200-(05)201 271-272 (09)201-(06)202 (08)204-(18)204 1971 99 120-122 (22)001-(11)002 none 1972 100 none (21)005-(04)006 none (07)015-(20)015 (03)150-(10)150 1973 92 222-244,245-249 (05)217-(03)218 38-39 (15)251-(02)252 (17)253-(01)254 1974 81 15-17,26-27,51-55 (20)084-(03)085 225-227,258,261-262, 51-55,65-66,77-79 (13)087-(03)088 276-278,288-294, 92-93,107-110,139- (17)089-(02)090 302-304 143,145-147,160-169 (12)091-(21)091 179-184,187-189,229- (14)096-(03)097 234,271-274,282-283 (03)098-(21)098 304-310,317-318 (14)099-(01)100 (12)100-(01)101 (12)102-(01)103 (14)099-(01)100 (12)100-(01)101 (12)102-(01)103 (12)104-(02)105 (05)113-(02)114 (16)116-(03)117 (07)117-(03)118 (15)127-(03)128 (17)134-(03)135 (08)149-(21)149 (16)177-(03)178 (07)190-(04)191 (08)218-(04)219 (19)239-(04)240 (12)243-(19)243 (14)262-(01)263 (17)274-(04)275 (20)278-(04)279 (18)322-(00)323 1975 91 1-31,274-276 (03)032-(00)033 321 (04)099-(01)100 (20)105-(01)106 (09)278-(02)279 1976 100 none none 63,73-75 1977 97 255-259,266-269 none none 332-334 1978 86 11-60,365 none none 1979 85 1-54 none none 1980 100 none none 274-275,360-361 1981 16 60-365 none none 1982 36 1-233 none none 1983 100 none none none 1984 100 none none 75-77 1985 100 none none none 1986 100 none none 227-236,318 1987 100 none none 253-257 1988 100 none none none 1989 100 none none none 1990 100 none none none 1991 100 none (00)152-(22)152 none 1992 100 none none none 1993 100 none (00)092-(23)092 none 1994 100 none (19)062-(23)064 none (09)212-(08)213 (12)251-(15)252 1995 100 none none none 1996 100 none none none 1997 98 91-97 none none 1998 100 none none none 1999 100 none none none 2000 100 none none none 2001 100 none none none 2002 100 none none none 2003 100 none none none 2004 87 288-335 none none 2005 100 none none none 2006 100 none none none 2007 63 215-352 none none 2008 100 none (00)095-(07)095 none (21)202-(08)203 (18)205-(06)206 (08)275-(17)275 (23)306-(15)307 (03)310-(11)310 (08)344-(22)344 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