QUALITY ASSESSMENT OF SEA LEVEL DATA by the UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER JOINT ARCHIVE FOR SEA LEVEL updated: 15 Sep 2020 Station : San Diego,CA Latitude: 32 42.8N Country : USA Longitude: 117 10.4W JASL # : 569A Time Meridian: 120W (GMT - 8 hr) GLOSS # : none Originator #:9410170 NODC #: 73112701 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 : US Coastal Geodetic Survey (1906-1972); NOS (1973+) Original Data: analog (standard); digital (ADR, NGWLMS, MWWL) Instrmnt Type: standard mechanical (1906-1974); analog-to-digital (ADR) recorder (1975-1990); Aquatrak acoustic gauge, NOAA Next Generation Water Level Measuring System (NGWLMS) (1991-); Design Analysis WaterLOG Microwave sensor (MWWL) radar gauge (2018-) Digitzd Intvl: hourly (standard); six-minute (digital) NGWLMS and MWWL sampling are three-minute averages Present Data : Hourly, daily, and monthly values obtained by: Hourly : The original digitizing interval was hourly (standard); spot sampling on the hour (digital) 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 : 21 Jan 1906 - 31 Dec 2019 Gaps > 1 mon : 04 Jan 1926 - 30 Jun 1926;10 Apr 1929 - 01 Jul 1929 01 Apr 1962 - 22 Jan 1963;01 Dec 1965 - 31 Dec 1965 25 Apr 1974 - 30 May 1974;08 Aug 1986 - 21 Nov 1986 Time Refernce: GMT (hours 00-23) Space-filler Flag :-9999 Units : millimeters Missing Data Flag : 9999 Existing : Yes Operational : Yes Sat. Trans. : Yes Distribution : 1906-2019 Refernce Levl: All heights have been referred to the station tide staff zero which is linked to fixed bench marks. Data prior to 5 Jan 1926 were adjusted by -107 mm to tie the original site to the new site. An obvious level jump was adjusted by -120 mm (08Z) 01 Jan to (18Z) 19 Jan 1973. 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 and agree with the nearest stations. Timing no better than about +- 7 minutes prior to 1936. Suspicious data that have not been adjusted: dates comment -------------------- ----------------------------- 26 Jun - 02 Oct 1919 bad timing; appears 10 cm high relative to PSMSL data 01 Jan - 31 Mar 1929 bad timing; appears 10 cm low relative to PSMSL data Notable episodic events: 11 Nov 1922: Tsunami 01 Apr 1946: Tsunami from E. Aleutians 04-06 Nov 1952: Tsunami from Kamchatka 09-10 Mar 1957: Tsunami from C. Aleutians 23-25 May 1960: Tsunami from S.C. Chile 28-29 Mar 1964: Tsunami from Alaska 28 Feb 2010: Tsunami from Chile 11 Mar 2011: Tsunami from Japan CI MISSING REPLACED GAPS QUESTIONABLE YEAR (%) DATA OR BAD DATA FLUCTUATIONS ---- --- -------------------- --------------- -------------------- 1906 94 none none none 1907 100 none (23)040-(08)041 none (04)205-(11)205 1908 100 none (06)365-(13)365 none 1909 100 none (15)010-(00)011 none 1910 100 none (20)266-(07)267 none 1911 100 none none none 1912 100 none none none 1913 100 none (23)167-(09)168 none 1914 100 none (16)027-(00)028 none 1915 100 none none none 1916 100 none none none 1917 100 none none none 1918 98 244-251 (06)012-(01)013 76-77,98-100 (23)034-(14)035 (02)075-(11)075 (05)082-(12)082 (03)090-(12)090 (04)112-(11)112 (08)134-(18)134 1919 97 275-287 none 163-275 1920 100 none (13)036-(06)037 none (16)180-(06)181 (19)197-(03)198 (21)253-(04)254 (14)339-(23)339 1921 100 none (12)004-(22)004 none (15)005-(22)005 (01)026-(11)026 (13)040-(20)040 (01)042-(11)042 (23)213-(15)214 1922 100 none (03)164-(11)164 none (21)315-(09)316 1923 100 none (05)281-(20)281 none (20)357-(05)358 1924 100 none (03)069-(11)069 none (05)070-(12)070 (15)281-(22)281 1925 100 none (12)099-(19)099 none (08)115-(02)116 (10)118-(17)118 (17)345-(03)346 1926 52 4-181 none none 1927 99 362-365 none none 1928 99 1 none none 1929 78 100-182 (04)217-(11)217 23-100 1930 100 none (12)090-(23)090 none 1931 96 321-323,327-331, (21)073-(04)074 254-339 339-348 (10)143-(09)144 1932 100 none (18)334-(11)335 none (16)333-(23)333 (07)334-(11)335 1933 100 none none 68-90 1934 100 none (13)016-(23)016 none (14)024-(05)025 (18)194-(01)195 (06)195-(13)195 1935 100 none none none 1936 100 none none none 1937 100 none none none 1938 97 1-11 (04)161-(12)161 none (22)219-(11)220 1939 96 84-96,105-108 (09)015-(21)015 none (06)041-(13)041 1940 95 348-366 (12)330-(23)330 none 1941 92 1-29 none none 1942 100 none none none 1943 100 none none none 1944 100 none (13)068-(20)068 none 1945 100 none none none 1946 100 none none none 1947 100 none none none 1948 100 none none none 1949 96 184-199 none none 1950 99 119-122 (10)117-(20)117 none 1951 96 316-330 none none 1952 100 none (18)006-(03)007 none (14)128-(23)128 1953 100 none (06)103-(14)103 none 1954 100 none none none 1955 100 none none none 1956 100 none none none 1957 100 none none none 1958 100 none none none 1959 100 none none none 1960 100 none none none 1961 100 none (18)002-(05)003 none (02)151-(15)151 (02)164-(11)164 (23)283-(10)284 (03)296-(23)297 (02)308-(23)308 (12)309-(04)310 (00)339-(11)339 1962 25 91-365 none none 1963 94 1-22 (21)023-(16)024 none (02)124-(11)124 (08)144-(15)144 1964 100 none (02)163-(14)163 none (23)322-(23)323 1965 92 335-365 (16)321-(11)322 101-102 1966 98 1,60-67 (00)007-(11)007 none 1967 100 none none 273-274 1968 97 343-353,358-359 none 82-84 1969 100 none (04)010-(11)010 13-17 (01)011-(10)011 (05)079-(15)079 1970 90 96-105,178-180,293- (06)201-(16)201 66-67 314,316-320,328-331 (07)202-(15)202 (09)323-(17)323 1971 100 none none 250 1972 95 188-207 (01)122-(21)122 1-2,116-121 (18)310-(04)311 (09)353-(23)353 1973 100 none (12)315-(23)315 45-47 (01)316-(11)316 1974 90 110-112,115-150 (08)012-(18)012 179,216,226-228, (07)155-(16)155 275-276 (07)169-(15)169 (06)230-(23)230 1975 98 335-342,363-364 (17)023-(00)024 191-194,222-223, (12)057-(00)058 264-265,269,277, (04)058-(22)058 286,293-295,303- (03)119-(23)119 305 (02)212-(23)212 (18)345-(15)346 (12)352-(07)353 (01)361-(19)361 1976 99 105-107,113-114 (12)312-(23)312 none 1977 99 92-94,255-258 none none 1978 100 none (08)060-(00)061 none 1979 99 334-337 (13)067-(11)068 none 1980 100 none none none 1981 100 none (12)022-(23)022 60 1982 100 none none none 1983 100 none none none 1984 100 none none none 1985 100 none none none 1986 71 220-325 none none 1987 100 none (12)064-(09)065 none 1988 100 none none none 1989 100 none none none 1990 100 none none none 1991 100 none none none 1992 100 none none none 1993 100 none none none 1994 100 none none none 1995 100 none none none 1996 100 none none none 1997 99 32-36 none none 1998 100 none none none 1999 98 288-294 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 99 249-250 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 2019 100 none none none