QUALITY ASSESSMENT OF SEA LEVEL DATA by the UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER JOINT ARCHIVE FOR SEA LEVEL updated: 06 Nov 2019 Station : French Frigate Shoals-B Latitude: 23 52.1N Country : USA Longitude: 166 17.3W JASL # : 014B Time Meridian: 165W (GMT - 11 hr) GLOSS # : 107 Originator #: 014 NODC #: 72163601 Contributor : UH Sea Level Center 1000 Pope Rd. MSB 317 Honolulu, Hawaii 96822 Originator : Dept. of Oceanography University of Hawaii 1000 Pope Rd. MSB 317 Honolulu, Hawaii 96822 Original Data: digital Instrmnt Type: 1) 04/2007- Radar (RAD), Vega Vegapuls 62 2) 04/2007- Pressure transducer (PRS) Primary channel used in JASL set: RAD:04/2007-2018 *short gaps in primary channel filled with other channels as available; see UHSLC for specific dates Digitzd Intvl: 2 min (RAD, PRS) Present Data : Hourly, daily, and monthly values obtained by: Hourly : three-point Hanning filter centered 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 : 26 May 2007 - 04 Oct 2018 Gaps > 1 mon : 12 Jun 2009 - 27 Feb 2010;04 May 2010 - 07 Jul 2010 24 Dec 2012 - 23 Mar 2013;17 Oct 2013 - 22 Jul 2014 17 Sep 2016 - 11 Apr 2017 Time Refernce: GMT (hours 00-23) Space-filler Flag :-9999 Units : millimeters Missing Data Flag : 9999 Existing : Yes Operational : Yes Sat. Trans. : Yes Distribution : 2007-2018 Refernce Levl: Heights are referred to the station tide staff zero, which is linked to land-based benchmarks. This reference zero is unique to this station and is not an official datum (chart, national, etc.) and is not relative to local tidal parameters, such as mean lower low water. See the Originators for benchmark descriptions, maps, and the geodetic levelling history. The series 014A is separate from 014B because a reference level shift occurred during the gap in Mar-May 2007, and after the gap, the reference zero of 014B could not be resolved to 014A. Comment : The daily and monthly means reveal no obvious shifts or trends. Comparison with AVISO altimeter suggest 014B series +5-10 cm 2013-2018. JASL update Nov 2019 replaces Jan - 15 Sep 2016. Hurricane Walaka destroyed the station Oct 2018. CI MISSING REPLACED GAPS QUESTIONABLE YEAR (%) DATA OR BAD DATA FLUCTUATIONS ---- --- -------------------- --------------- -------------------- 2007 60 none none none 2008 100 none (17)078-(00)079 none 2009 45 163-365 none none 2010 68 1-58,124-185 (20)122-(04)123 none (20)123-(05)124 (21)216-(14)217 (09)223-(18)223 (07)224-(20)224 (06)226-(01)227 (04)227-(22)227 (20)315-(03)316 (13)332-(23)332 (13)347-(22)347 (03)348-(19)348 (05)350-(18)350 (06)351-(17)351 (08)352-(19)352 (08)358-(17)358 (11)359-(18)359 (08)360-(19)360 (04)361-(19)361 (09)364-(18)364 (07)365-(18)365 (10)001-(18)001 2011 92 171-199 (07)002-(18)002 none (10)004-(18)004 (09)037-(18)037 (12)046-(19)046 (11)047-(20)047 (06)048-(18)048 (10)063-(18)063 (10)075-(18)075 (09)076-(18)076 (08)078-(18)078 (11)083-(18)083 (09)084-(18)084 (05)085-(17)085 (05)086-(17)086 (05)087-(18)087 (05)088-(18)088 (05)089-(19)089 (06)090-(18)090 (05)091-(18)091 (10)093-(18)093 (06)095-(20)095 (06)096-(17)096 (08)098-(17)098 (11)099-(18)099 (07)100-(18)100 (06)101-(17)101 (06)102-(18)102 (09)104-(17)104 (09)105-(18)105 (09)109-(17)109 (10)113-(17)113 (09)114-(17)114 (09)116-(17)116 (06)117-(17)117 (05)118-(17)118 (05)119-(17)119 (05)120-(18)120 (11)122-(18)122 (06)124-(17)124 (06)125-(18)125 (05)126-(18)126 (06)127-(18)127 (05)128-(18)128 (05)129-(18)129 (05)130-(17)130 (05)131-(17)131 (05)132-(18)132 (05)133-(18)133 (06)134-(18)134 (05)136-(12)136 (06)139-(17)139 (07)141-(17)141 (07)149-(18)149 (09)157-(18)157 (08)158-(16)158 (11)163-(18)163 (08)165-(18)165 (08)166-(18)166 (05)167-(22)167 (06)168-(20)168 (04)169-(22)169 (02)170-(21)170 (06)200-(18)200 (08)201-(17)201 (08)203-(17)203 (11)204-(18)204 (07)205-(17)205 (06)206-(18)206 (05)207-(18)207 (07)208-(19)208 (05)209-(19)209 (08)211-(18)211 (11)213-(18)213 (09)214-(16)214 (15)239-(02)240 (10)240-(18)240 2012 80 81-83,144-145,163- (10)046-(17)046 none 167,169-171,173-176, (04)168-(22)168 180-182,184-191,212- (09)172-(17)172 216,218-227,244-249, (20)172-(17)173 253-259,268-276,281- (23)176-(17)177 283,293-297,309-210, (03)178-(17)178 322-323,339-340,342- (03)183-(23)183 347,359-366 (01)184-(12)184 (01)192-(19)192 (21)192-(10)193 (05)199-(14)199 (18)201-(03)202 (06)202-(14)202 (05)203-(14)203 (04)204-(02)205 (06)205-(17)205 (17)208-(02)209 (16)209-(15)210 (15)211-(14)212 (06)216-(17)216 (11)217-(10)218 (05)227-(20)227 (06)228-(18)228 (08)229-(15)229 (04)233-(23)233 (01)237-(18)237 (10)239-(19)239 (17)245-(00)246 (12)249-(23)249 (15)250-(22)250 (05)251-(12)251 (15)251-(23)251 (05)260-(18)260 (06)261-(16)261 (11)262-(19)262 (18)283-(04)284 (18)284-(04)285 (17)291-(03)292 (17)292-(03)293 (05)297-(15)297 (01)312-(12)312 (06)313-(19)313 (12)314-(20)314 (06)315-(20)315 (10)318-(18)318 (04)320-(17)320 (18)325-(02)326 (15)327-(00)328 (10)335-(19)335 (02)336-(20)336 (07)337-(15)337 (14)341-(22)341 (17)352-(01)353 (01)354-(15)354 2013 54 1-82,189-198,225- (13)174-(00)175 none 227,290-365 (10)198-(22)198 (05)199-(19)199 (00)235-(12)235 (05)278-(16)278 (05)282-(16)282 2014 45 1-203 (06)203-(13)203 none (07)210-(19)210 (06)215-(18)215 (08)216-(16)216 (06)237-(16)237 (07)290-(16)290 2015 92 229-262 (08)138-(15)138 none (08)140-(15)140 (05)157-(15)157 (08)169-(15)169 (06)184-(15)184 (07)189-(16)189 (06)192-(16)192 (08)198-(16)198 (06)201-(15)201 (09)202-(16)202 (09)205-(16)205 (07)211-(16)211 (07)216-(16)216 (06)223-(03)224 (08)224-(15)224 (07)228-(17)228 (06)282-(19)282 (06)283-(16)283 (07)285-(16)285 (06)294-(16)294 (09)302-(18)302 (07)303-(18)303 (05)304-(19)304 (04)305-(21)305 (04)306-(21)306 (04)307-(02)308 (04)308-(23)308 (03)309-(23)309 (03)310-(00)311 (03)311-(21)311 (03)312-(21)312 (04)313-(22)313 (03)314-(21)314 (03)315-(22)315 (04)316-(21)316 (04)317-(19)317 (07)318-(21)318 (07)321-(19)321 (05)322-(18)322 (04)323-(20)323 (01)324-(18)324 (05)325-(19)325 (11)326-(18)326 (06)333-(17)333 (05)342-(17)342 2016 65 148-150,154-156,224- (05)010-(13)010 none 225,232-234,236-244, (08)058-(15)058 249-259 (06)092-(18)092 (06)093-(16)093 (06)095-(15)095 (08)100-(16)100 (08)101-(15)101 (06)113-(20)113 (07)114-(23)114 (07)115-(18)115 (06)118-(13)118 (07)125-(17)125 (06)135-(15)135 (12)136-(01)137 (07)139-(15)139 (06)140-(17)140 (06)150-(17)150 (06)151-(15)151 (05)153-(15)153 (07)156-(22)156 (07)191-(17)191 (08)192-(17)192 (06)196-(17)196 (06)197-(16)197 (09)198-(19)198 (07)199-(17)199 (07)200-(16)200 (07)203-(16)203 (06)205-(15)205 (08)206-(16)206 (05)209-(01)210 (03)210-(15)210 (03)213-(16)213 (23)213-(22)214 (07)215-(20)215 (01)216-(17)216 (06)218-(22)218 (08)220-(17)220 (06)221-(21)221 (06)222-(17)222 (06)223-(01)224 (06)225-(19)225 (05)228-(21)228 (06)229-(02)230 (06)230-(03)231 (06)231-(04)232 (19)234-(03)235 (15)235-(03)236 (15)241-(05)242 (17)244-(04)245 (06)245-(16)245 (18)245-(03)246 (09)246-(17)246 (00)247-(23)247 (07)248-(04)249 (06)252-(04)253 (07)259-(05)260 (09)260-(03)261 2017 73 26-365 none none 2018 76 1-101,277-365 (21)233-(13)234 none