QUALITY ASSESSMENT OF SEA LEVEL DATA by the UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER JOINT ARCHIVE FOR SEA LEVEL updated: 10 Jan 2018 Station : Male-B,Hulule Latitude: 04 11.4N Country : Rep. of Maldives Longitude: 073 31.6E JASL # : 108B Time Meridian: 075E (GMT + 5 hr) GLOSS # : 028 TOGA #: I052 NODC #: 10074302 Contributor : UH Sea Level Center 1000 Pope Rd. MSB 317 Honolulu, Hawaii 96822 Originator : UH Sea Level Center in collaboration with Dept. of Meteorology Male, Republic of Maldives Original Data: analog (BUB); digital (others) Instrmnt Type: 1) 1989-1994 Metercraft Bubbler (BUB) 2) 1989- Handar 436-A, Encoder (ENC), 3) 1994-5/2006 Handar 436-B (ENB) with datalogger (ENO) 4) 5/2006- pressure transducer (PRS) 5) 5/2006- radar (RAD) (Vega Vegapuls 62) 6) 5/2006- Sutron Stage Discharge Recorder (SDR) encoder, float/well Primary channel used in JASL set: 1989-5/2009: ENC or ENB 5/2009-2017: RAD (some gaps filled with SDR) *short gaps in primary channel filled with other channels as available; see UHSLC for specific dates Digitzd Intvl: one hour (BUB); 4 min (ENC); 15 min (ENB,ENO); 2 min (PRS); 3 min (RAD) Present Data : Hourly, daily, and monthly values obtained by: Hourly : The original digitizing interval was hourly (BUB); three-point hanning filter centered on the hour (ENC and ENB). 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 : 27 Aug 1989 - 05 Sep 2017 Gaps > 1 mon : 14 Jan 1990 - 09 May 1990;04 Sep 1990 - 05 Nov 1990 28 Nov 1991 - 07 Jan 1992;25 Mar 1994 - 01 Jun 1994 Time Refernce: GMT (hours 00-23) Space-filler Flag :-9999 Units : millimeters Missing Data Flag : 9999 Existing : Yes Operational : Yes Sat. Trans. : Yes Distribution : 1989-2017 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. Comment : The daily and monthly means do not reveal any suspicious reference level changes. The timing is no better than about +/- 7 minutes. This station has not been linked via surveys to Male-A, which is on a nearby separate atoll. CI MISSING REPLACED GAPS QUESTIONABLE YEAR (%) DATA OR BAD DATA FLUCTUATIONS ---- --- -------------------- --------------- -------------------- 1989 24 249-251,256-283, none 239-249,252-256,283- 303-313, 288,294-298,313 1990 38 14-129,133-135, none 206-207,217-218,243- 164-176,181-191, 247,313-314 198-200,207-212, 214-216,223-225, 227-242,247-309, 319-322 1991 88 32-36,46-48,195-198, none 36-113,231-306 332-365 1992 96 1-7,15-18,141-145 none 11-120,200-298 1993 98 203-205,242-243,253- (16)043-(04)044 none 254,271-273,316-318 (11)057-(05)058 (07)137-(06)138 (11)179-(04)180 (14)213-(07)214 (11)239-(07)240 (16)278-(08)279 (00)323-(23)323 1994 79 56-57,84-152,209- (13)043-(06)044 none 214,230-233,238-239 (10)066-(07)067 (18)070-(09)071 (16)186-(03)187 (11)214-(07)215 1995 99 273-274 (00)168-(22)168 none (00)194-(22)194 (01)213-(22)213 (00)221-(22)221 1996 100 none none none 1997 100 none none none 1998 100 none none none 1999 100 none none none 2000 100 none none none 2001 95 235-241,247-259 (06)261-(22)261 none (23)276-(22)277 2002 100 none none none 2003 100 none none none 2004 100 none none none 2005 94 304-327 none none 2006 99 130-131 (10)065-(08)066 none (05)086-(22)086 2007 100 none none none 2008 100 none none none 2009 100 none (07)123-(23)123 none 2010 100 none (12)089-(03)090 none (00)335-(08)335 2011 100 none (11)181-(18)181 none 2012 100 none (16)095-(00)096 none (13)097-(20)097 (13)098-(20)098 (15)099-(22)099 (12)100-(20)100 (16)102-(00)103 (10)114-(00)115 (17)120-(02)121 (02)123-(13)123 (10)125-(17)125 (19)125-(02)126 (10)126-(20)126 (11)129-(22)129 (15)130-(01)131 (17)132-(06)133 (22)133-(06)134 2013 100 none (12)174-(23)174 none 2014 100 none none none 2015 100 none none none 2016 100 none none none 2017 68 none none none