QUALITY ASSESSMENT OF SEA LEVEL DATA by the UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER JOINT ARCHIVE FOR SEA LEVEL updated: 24 Sep 2019 Station : Ile Royale,French Guiana Latitude: 05 17.1N Country : France Longitude: 052 35.1W JASL # : 850A Time Meridian: 045W (GMT - 3 hr) GLOSS # : 202 Originator #: 540 NODC #: 70055201 Contributor : Service Hydrographique et Oceanographique de la Marine (SHOM) 13 Rue du Chatellier 29200 Brest Cedex, France Originator : SHOM and Service des Phares et Balises de Guyane Original Data: digital Instrmnt Type: radar, Krohne Optiflex, Marelta acquisition (1989 segment unconfirmed for gauge and reduction) Digitzd Intvl: 1 min Present Data : Hourly, daily, and monthly values obtained by: Hourly : simple average of 2 min of data at 1 second samples 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 : 16 May 1989 - 31 Dec 2018 Gaps > 1 mon : 09 Jun 1989 - 03 Nov 2006 Time Refernce: GMT (00-23 hours) Space-filler Flag :-9999 Units : millimeters Missing Data Flag : 9999 Existing : Yes Operational : Yes Sat. Trans. : Yes Distribution : 1989-2018 Refernce Levl: The data are referred to the zero point assigned to the tide station. Bench mark information: SONEL ID,SHOM ID Height (m) above 0 Hydro Salut-1,A 6,884 Salut-2,B 4.720 Salut-3,C 3.499 Salut-4,D 4.636 Salut-5,I 15.952 Salut-6,J 5.396 Salut-7,K 4.907 Salut-8,P 5.159 Salut-1,A: "Repere fondamental. Repere de nivellement SHOM scelle horizontalement dans le soubassement d'une construction en ruine." Salut-2,B: "Repere de nivellement SHOM scelle horizontalement dans le mur de soutenement situe a l'enracinement du quai." Salut-3,C: "Repere de nivellement SHOM scelle horizontalement dans une marche de l'escalier." Salut-4,D: "Boulon de fixation du socie d'une vieille grue situee pres du debarcadere." Salut-5,I: "Repere darpentage plante au sommet de l'escalier permettant lacces a L'anse Legoff." Salut-6,J: "Boulon inox de gauche assurant la fixation de la passerelle soutenant le puits de tranquillisation du maregraphe." Salut-7,K "Plaque support du capteur radar servant d'index aux mesures de controle a la sonde lumineuse." Salut-8,P "Repere de nivellement SHOM en laiton scelle verticalement sur le quai a environ 50cm de la bitte d'amarrage derriere le local du feu. Mise en station d'un antenne GPS possible." Comment : The gauge is part of the RONIM (Reseau d'Observation du Niveau da la Mer) tide gauge network of France. It is located on the southeast part of the island at Baie des Cocotiers, of island Ile Royal within the islands of Iles du Salut, French Guiana. This gauge is also referred to as the Iles du Salut station. The data are of high quality. A nearby site on the northeast side of Ile Royale was maintained by Direction de la Mer, Guyane. It had an OTT-R16 float/well gauge. Marigrams were digitized at one hour intervals by SHOM for the length of the series, 1989-2007. The overlap 2006-2007 with Ile Royale radar gauge shows good agreement. The mean difference of the overlap is zero; thus, essentially the same reference zero. CI MISSING REPLACED GAPS QUESTIONABLE YEAR (%) DATA OR BAD DATA FLUCTUATIONS ---- --- -------------------- --------------- -------------------- 1989 7 1-136,160-365 none none 1990 0 1-365 none none 1991 0 1-365 none none 1992 0 1-366 none none 1993 0 1-365 none none 1994 0 1-365 none none 1995 0 1-365 none none 1996 0 1-366 none none 1997 0 1-365 none none 1998 0 1-365 none none 1999 0 1-365 none none 2000 0 1-366 none none 2001 0 1-365 none none 2002 0 1-365 none none 2003 0 1-365 none none 2004 0 1-366 none none 2005 0 1-365 none none 2006 16 1-307 none none 2007 91 168-179,317-340 none none 2008 100 none none none 2009 96 155-158,221-225,266- none none 270,280-286 2010 95 34-41,108-119 none none 2011 100 none (23)150-(06)151 none 2012 97 19-23,176-178,345- none none 349,365 2013 90 1-10,72-85,114-123, (18)099-(12)100 none 197-198,249-352 (15)213-(07)214 2014 95 2-16,127-134 (06)051-(13)051 none (09)199-(23)199 2015 99 126-131 2016 97 204-207,234-235,339- (10)173-(05)174 none 244,340-343 (14)213-(22)213 2017 93 57-58,179-180,214- (04)325-(11)325 none 223,351-352,357-365 2018 95 1-3,19-22,42-43,55- (08)348-(15)348 none 57,262-268,325-327, (04)355-(15)355 342-344