QUALITY ASSESSMENT OF SEA LEVEL DATA by the UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER JOINT ARCHIVE FOR SEA LEVEL Station : Puntarenas Latitude: 09 58.0N Country : Costa Rica Longitude: 084 50.0W JASL # : 396A Time Meridian: 090W (GMT - 6 hr) GLOSS # : none TOGA #: none NODC #: 70089402 Contributor : SERMAR, Instituto Meteorologico Nacional Apartado 7-3350 San Jose, COSTA RICA The 1961-1965 data were obtained from Scripps Institute of Oceanography University of California at San Diego La Jolla, California Originator : same Original Data: analog (standard) Instrmnt Type: Standard mechanical float type tide gauge Digitzd Intvl: one hour Present Data : Hourly, daily, and monthly values obtained by: Hourly : Spot sample on the hour 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 1961 - 31 Dec 1980 Gaps > 1 mon : 01 Jan 1966 - 02 Jan 1970 01 Jul 1970 - 02 Nov 1970;01 Dec 1970 - 11 Jan 1971 01 Jan 1972 - 01 Mar 1972;31 Jul 1972 - 06 Sep 1972 01 Dec 1972 - 02 Jan 1973;29 Sep 1973 - 02 Jan 1974 01 Jan 1976 - 01 Feb 1976 Time Refernce: GMT (hours 00-23) Space-filler Flag :-9999 Units : millimeters Missing Data Flag : 9999 Existing : Yes Operational : Yes Sat. Trans. : No Distribution : 1970-1980 Refernce Levl: The data have been linked to tide staff zero by the contributors. However, further analysis of the data has led to adjustments of the reference level in separate segments. All suspected shifts showed step function jumps in the plots of hourly residuals and of differences of daily values with the nearest stations. These ad- justments contain uncertainty to a few centimeters. period value added ( (hour)day/month/year ) to original(mm) --------------------------- --------------- (00)01/04/71-(07)02/05/71 -140 (08)02/05/71-(12)01/07/71 -260 (04)16/07/71-(23)25/07/71 255 (00)26/07/71-(14)02/08/71 180 (15)02/08/71-(06)31/08/71 300 (12)01/10/71-(12)02/11/71 85 (13)02/11/71-(03)01/12/71 35 (18)01/05/72-(00)30/05/72 100 (00)01/07/72-(22)19/07/72 100 (23)19/07/72-(12)31/07/72 880 (00)23/01/73-(22)01/02/73 420 (14)01/08/73-(04)06/08/73 400 (00)01/11/74-(16)02/12/74 -120 (12)02/10/75-(20)03/11/75 -95 (12)27/12/76-(12)01/02/77 85 (00)10/10/77-(12)25/10/77 -220 (14)02/03/78-(10)15/03/78 -440 (11)15/03/78-(18)01/04/78 -400 (12)26/03/79-(18)02/04/79 -330 The series from 1961 - 1965 has not been adjusted for the many obvious level shifts, more notably: 23/01/62 -13cm; 30/03/62 +13cm; 01/08/62 -08cm 02/09/62 -05cm; 01/09/63 +18cm; 11/09/63 -38cm 01/10/63 +13cm; 01/07/64 +13cm; 12/07/64 -18cm 01/02/65 -10cm; 06/02/65 +10cm; 03/03/65 -10cm 01/05/65 +10cm Comment : The data from the standard analog gauge showed many distinct shifts at the beginning of some months throughout the record. All obvious shifts have been adjusted as noted above; however, the long-term reference level stability is uncertain. The timing quality is also very poor. Use this data with caution. CI MISSING REPLACED GAPS QUESTIONABLE YEAR (%) DATA OR BAD DATA FLUCTUATIONS ---- --- -------------------- --------------- -------------------- 1961 90 1,191-196,201-204, (13)115-(23)115 241-242,284 205-223,249-250, (13)227-(20)227 340-348 (00)246-(18)246 (02)248-(09)248 (14)248-(21)248 (03)249-(10)249 (04)253-(12)253 1962 100 none none 7-8,46-47,70-73,181 1963 100 none (05)027-(16)027 54,71,87,98 (13)322-(11)323 1964 100 none (17)190-(19)191 none (07)210-(14)210 (15)281-(08)282 1965 100 none (03)067-(04)068 183-187,266-267 (16)277-(12)278 (01)295-(21)295 (04)311-(22)311 (00)319-(22)319 1966 0 1-365 none none 1967 0 1-365 none none 1968 0 1-366 none none 1969 0 1-365 none none 1970 55 1-2,86-92,182-306, (11)025-(22)025 7-14,99,40,65-67, 335-365 (23)075-(13)076 129,153-154,157-158 (02)100-(23)100 (06)103-(05)104 (20)143-(11)144 1971 92 1-11,78-91,206-208, (22)065-(07)066 30-32,307-308 244-247 (05)067-(13)067 (22)069-(07)070 (05)071-(13)071 (22)180-(11)181 (01)182-(13)182 (12)198-(23)198 (14)218-(10)219 (01)274-(17)274 (07)298-(18)298 (09)306-(19)306 (19)316-(05)317 1972 64 1-61,213-250,273-276,(21)072-(06)073 278,282-286,291-311, 306-307,336-366 (06)133-(05)134 314,328,333 (11)298-(04)299 (14)302-(01)303 (01)306-(19)306 (13)334-(22)334 1973 64 1-2,70-71,122-152, (02)048-(11)048 19-23 162-163,185-186,251- (06)068-(16)068 253,258-260,272-365 (03)218-(11)218 (18)245-(14)246 (11)270-(21)270 1974 98 1-2,181-183,196-197, (23)014-(07)015 none 202-203,258-259 (14)015-(00)016 (16)081-(01)082 (08)120-(23)120 (09)138-(00)139 (04)184-(19)184 (06)185-(05)186 (20)192-(14)193 (10)216-(04)217 (17)245-(10)246 (01)305-(15)305 (01)335-(13)335 1975 99 207-209 (07)149-(22)149 305-307 (22)165-(08)166 (04)169-(15)169 (22)174-(11)175 (04)176-(13)176 (01)182-(13)182 (22)215-(06)216 (22)218-(07)219 (04)220-(13)220 (13)316-(23)316 (13)361-(02)362 1976 90 1-33,158-159,239-240,(06)216-(01)217 none 323-327 (22)322-(08)323 1977 95 46-49,137-139,152- (06)024-(05)025 none 154,181-185,221-222, (00)080-(10)080 261-262,267-269, (10)121-(20)121 280-283 (10)158-(18)158 (21)227-(12)228 (08)238-(19)238 (06)298-(15)298 (04)333-(12)333 1978 92 105-116,127-129,180- (22)033-(07)034 126-133 181,204-205,273-275, (13)145-(11)146 279-282,314-317,321- (02)153-(18)153 324,358-360,365 (06)229-(13)229 (00)313-(14)313 (06)318-(13)318 (06)319-(18)319 (06)320-(13)320 (20)324-(16)325 (04)326-(13)326 (06)343-(13)343 (05)344-(13)344 (22)353-(08)354 (01)357-(12)357 (02)364-(19)364 1979 86 1-2,90-91,118-123, (13)017-(22)017 176-177 146-156,180-183,237- (07)030-(17)030 238,272-274,280-281, (21)033-(06)034 285-288,298-299,302- (06)046-(14)046 306,315-316,329-334, (13)067-(04)068 336-339,342-347,354- (20)071-(18)072 355,357-360,364-365 (15)085-(01)086 (06)139-(14)139 (10)142-(18)142 (20)145-(04)146 (01)152-(15)152 (16)166-(23)166 (04)176-(14)176 (01)283-(13)283 (02)290-(15)290 (01)295-(12)295 (06)297-(15)297 (12)300-(05)301 (03)312-(18)312 (10)322-(18)322 (22)324-(20)325 (06)327-(18)327 (03)335-(19)335 (04)348-(13)348 (03)349-(14)349 (06)351-(22)351 1980 92 1-2,20-21,28-31,33- (06)008-(18)008 none 34,38-39,41-44,49- (00)014-(12)014 62,95-98,151-153 (07)016-(14)016 (11)017-(22)017 (10)018-(22)018 (03)022-(22)022 (03)023-(16)023 (02)024-(14)024 (21)025-(13)026 (23)027-(13)028 (05)031-(13)031 (05)035-(04)036 (06)049-(14)049 (01)061-(15)061 (02)063-(14)063 (04)065-(18)065 (00)078-(16)078 (08)089-(19)089 (01)119-(15)119 (03)122-(16)122 (06)133-(18)133 (04)135-(22)135 (00)140-(13)140 (10)146-(20)146 (03)210-(15)210 (21)210-(07)211 (22)216-(15)217 (10)237-(20)237 (03)238-(13)238 (06)240-(14)240 (15)242-(05)243 (16)259-(14)260 (13)343-(11)344