QUALITY ASSESSMENT OF SEA LEVEL DATA by the UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER JOINT ARCHIVE FOR SEA LEVEL Station : Callao-A Latitude: 12 03.0S Country : Peru Longitude: 077 09.0W JASL # : 093A Time Meridian: 075W (GMT - 5 hr) GLOSS # : 173 TOGA #: P083 NODC #: 51072701 Contributor : Scripps Institute of Oceanography (D.Luther) University of California at San Diego La Jolla, California Originator : Coastal Geodetic Survey (US Govt) Original Data: unconfirmed Instrmnt Type: unconfirmed Digitzd Intvl: unconfirmed Present Data : Hourly, daily, and monthly values obtained by: Hourly : key-punched from 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 : 01 Jan 1950 - 31 Dec 1965 Gaps > 1 mon : 02 Nov 1956 - 10 Dec 1956;20 May 1964 - 01 Jul 1964 Time Refernce: GMT (hours 00-23) Space-filler Flag :-9999 Units : millimeters Missing Data Flag : 9999 Existing : No Operational : No Sat. Trans. : No Distribution : 1950-1965 Refernce Levl: All heights have been referred to the station tide staff zero which is linked to fixed bench marks Comment : The daily and monthly means reveal no apparent changes in the reference level and agree well with Talara. Notable episodic events: 05-08 Nov 1952: Tsunami from Kamchatka 09-10 Mar 1957: Tsunami from C. Aleutians (small) 23-25 May 1960: Tsunami from S.C. Chile 28-29 Mar 1964: Tsunami from Alaska This series is separate from Callao-B because they are not linked to a common datum. CI MISSING REPLACED GAPS QUESTIONABLE YEAR (%) DATA OR BAD DATA FLUCTUATIONS ---- --- -------------------- --------------- -------------------- 1950 99 1 (09)147-(17)147 none 1951 100 none none none 1952 100 none none none 1953 98 99-106 none none 1954 98 358-365 none none 1955 100 none none none 1956 82 183-209,307-345 none none 1957 96 188-189,202-204,208- none none 212,251-259 1958 100 none none none 1959 100 none none none 1960 100 none (02)326-(12)326 none 1961 100 none (14)358-(00)359 none (05)359-(12)359 (05)360-(13)360 1962 100 none none none 1963 100 none none none 1964 88 138-139,141-183 none none 1965 100 none (17)002-(03)003 none