QUALITY ASSESSMENT OF SEA LEVEL DATA by the UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER JOINT ARCHIVE FOR SEA LEVEL updated: 31 Mar 2014 Station : Gedser Latitude: 54 34.0N Country : Denmark Longitude: 011 56.0E JASL # : 837A Time Meridian: 015E (GMT + 01 hr) GLOSS # : none Originator #: NODC #: 75014101 Contributor : Danish Meteorological Institute Lyngbyvej 100 2100 Kobenhavn 0 DENMARK Originator : same Original Data: analog and digital Instrmnt Type: 1890-1970: float/stilling well; analog charts 1970-1990: float/stilling well; potentiometer and paper tape puncher for digital transfer 1990-: automatic real time data transmission 6/2001-: Differential pressure transducer CTD Digitzd Intvl: analog: one hour; digital: 5 min Present Data : Hourly, daily, and monthly values obtained by: Hourly : spot 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 Sep 1891 - 31 Dec 2012 Gaps > 1 mon : 01 May 1919 - 01 Sep 1919;28 Jan 1922 - 07 Apr 1919 01 Oct 1934 - 31 Oct 1934;27 Jul 1946 - 31 May 1947 01 Jan 1972 - 08 Feb 1972;30 Apr 1984 - 31 May 1984 30 Jun 1984 - 31 Jul 1984;30 Nov 1984 - 14 Mar 1985 30 Apr 1985 - 04 Jun 1985;30 Jun 1985 - 31 Jul 1985 01 May 1987 - 01 Jun 1987;31 Jul 1989 - 31 Aug 1989 15 Feb 2011 - 24 Mar 2011 Time Refernce: GMT (00-23 hours) Space-filler Flag :-9999 Units : millimeters Missing Data Flag : 9999 Existing : Yes Operational : Yes Sat. Trans. : Yes Distribution : 1891-2012 Refernce Levl: Datum, benchmarks on land and benchmark on the visual tide pole are established and maintained by the National Survey and Cadastre. Sea Level data are referenced to LN (local zero) which is the original local MSL (mean sea level) calculated in 1910. Conversion from LN to DVR (Danish Vertical Reference) or DNN/GI (Danish Normal Zero), DVR = LN - 5.0cm; DNN/GI = LN + 2.7cm Comment : The tide gauge was attended almost daily by a trained observer, who has collected ancillary tide gauge information. Until 1910 heights of the visual tide poles were measured, and, after establishment of a chart datum, recalculated. From around 1920 datum of the visual tide poles has been measured about every third year by the National Survey and Cadastre. During use of float/well instruments, fresh water could enter the well at low water and was unable to get out. DMI has performed quality control on the data. Spikes and highs and lows with constant value over time were removed. At Gedser a spike was defined if greater than 35cm or less than -35cm more than 6 hours. Users are encouraged to reference this techical report: Hansen, L., 2013. Hourly values of sea level observations from two stations in Denmark: Hornbaek 1890-2012 and Gedser 1891-2012. Danish Meteorological Institute. Technical Report 13-14. URL: www.dmi.dk/dmi/tr13-14.pdf Copyright: Danish Meteorological Institute Application and publication of data and text is allowed for noncomercial use with proper reference and acknowledgement. DMI cannot be held responsible for any use or interpretation of data. The tidal analysis does not resolve all the harmonic constituents. In addition, significant energy at the scale of passing weather events of 1-5 days occurs predominantly during winter months. Thus the hourly residuals have large fluctuations. The timing appears to be of good quality throughout the record. CI MISSING REPLACED GAPS QUESTIONABLE YEAR (%) DATA OR BAD DATA FLUCTUATIONS ---- --- -------------------- --------------- -------------------- 1891 28 297-306,312-320, (18)258-(05)259 none 324-326 (18)261-(08)262 (19)269-(07)270 (00)271-(07)271 (20)273-(07)274 (21)275-(06)276 (19)283-(11)284 (22)284-(07)285 (22)285-(07)286 (19)286-(07)287 (22)287-(06)288 (18)288-(07)289 (00)290-(07)290 (23)290-(08)291 (20)291-(06)292 (00)294-(11)294 (19)294-(06)295 (00)296-(15)296 (17)296-(11)297 (18)306-(06)307 (18)307-(06)308 (19)308-(06)309 (17)309-(06)310 (17)310-(11)311 (17)311-(08)312 (19)334-(11)335 (15)344-(07)345 (00)350-(08)350 (13)358-(23)358 (15)363-(07)364 1892 98 30-32,95-98,281-284, (22)007-(13)008 none 330-331 (00)014-(12)014 (15)035-(23)035 (18)050-(03)051 (00)059-(08)059 (04)068-(15)068 (18)077-(07)078 (04)088-(18)088 (19)092-(11)093 (00)094-(07)094 (00)106-(11)106 (22)118-(16)119 (20)209-(03)210 (16)227-(06)228 (16)273-(09)274 (16)314-(23)314 (09)326-(08)327 (22)327-(07)328 (18)336-(09)337 1893 100 none (00)084-(09)084 none (09)125-(18)125 (06)130-(17)130 (05)237-(17)237 (00)243-(07)243 (19)305-(08)306 1894 99 200-203 (14)043-(09)044 none (00)112-(07)112 (22)112-(16)113 (19)152-(02)153 (12)227-(08)228 (21)250-(05)251 (16)265-(03)266 (15)294-(07)295 (17)312-(16)313 (18)317-(04)318 (02)363-(15)363 1895 100 none (21)048-(14)049 none (03)084-(13)084 (06)248-(13)248 1896 100 none (12)007-(08)008 none (17)029-(14)030 (13)039-(21)039 (20)064-(05)065 (10)078-(07)079 (05)187-(12)187 (05)362-(13)362 1897 99 93-94,227-228 (00)045-(07)045 none (19)047-(02)048 (18)113-(15)114 (18)157-(07)158 (06)218-(13)218 (13)220-(07)221 (00)244-(17)244 (08)248-(15)248 (21)255-(07)256 (09)257-(17)257 (21)257-(07)258 (21)259-(06)260 (21)260-(07)261 (00)331-(07)331 (00)335-(07)335 (10)362-(17)362 1898 99 13-14 (00)044-(15)044 none (20)046-(07)047 (00)244-(13)244 (09)307-(18)307 (15)335-(02)336 (04)337-(14)337 1899 100 none none none 1900 95 20-25,248-257,355- (00)304-(10)304 none 358 (00)326-(08)326 (02)347-(12)347 (18)349-(14)350 (02)351-(12)351 (08)352-(23)352 (18)360-(15)361 1901 98 20-23,27-28,169-171 (20)008-(11)009 none (21)025-(13)026 (07)030-(19)030 (15)054-(14)055 (00)074-(09)074 (00)079-(09)079 (02)080-(09)080 (12)094-(09)095 (21)159-(13)160 (22)186-(08)187 1902 99 355-356 (14)230-(03)231 none (11)317-(10)318 (05)350-(15)350 1903 95 39-48,51-52,244-246, (07)053-(15)053 none 276-278,298-299,335- (18)054-(10)055 336,344-346 (03)104-(14)104 (02)105-(09)105 (08)110-(15)110 (20)233-(17)234 (00)255-(09)255 (16)357-(07)358 1904 97 13-14,49-50,63-64, (15)008-(11)009 none 93-98,103-104 (02)016-(14)016 (13)106-(07)107 (15)119-(07)120 (00)124-(17)124 (09)132-(08)133 (05)366-(12)366 1905 89 3-5,22-24,26-28,34- (20)029-(15)030 none 49,50-52,61-64,103- (00)050-(11)050 105,118-120,225-227, (02)199-(10)199 228-233,298-299,307- (19)276-(16)277 309,333-334 (21)335-(11)336 1906 100 none (16)005-(10)006 none 1907 99 28-30,218-220,340- (06)050-(16)050 none 342 (21)159-(04)160 (00)177-(17)177 1908 99 28-29,284-286,343- (20)006-(15)007 none 344 (00)022-(13)022 (22)026-(11)027 (04)031-(11)031 (13)151-(05)152 (00)158-(11)158 (09)226-(18)226 (08)239-(17)239 (22)242-(10)243 (16)244-(05)245 (04)246-(12)246 (20)247-(05)248 (08)250-(06)251 (17)254-(14)255 (15)303-(11)304 1909 99 35-38,241-242 (00)060-(11)060 none (17)294-(09)295 (12)341-(11)342 1910 100 none (12)003-(11)004 none (00)035-(13)035 (00)036-(13)036 (14)215-(11)216 (15)278-(14)279 1911 100 none none none 1912 99 124-125 (17)196-(11)197 none 1913 100 none (15)165-(22)165 none (15)340-(08)341 1914 98 341-348 (04)031-(14)031 none (20)314-(13)315 1915 100 none (13)241-(20)241 none (18)345-(14)346 1916 99 119-120 (20)009-(13)010 none (17)015-(01)016 (18)349-(07)350 1917 97 273-275,334-343 (16)082-(07)083 none (21)203-(05)204 1918 98 14-16,26-28,332-336 (15)010-(10)011 none (02)017-(23)017 (23)018-(11)019 (15)020-(04)021 (08)025-(02)026 (23)028-(16)029 1919 66 121-244 none none 1920 99 32-34 (04)174-(11)174 none 1921 100 none (03)264-(15)264 none 1922 81 10-11,28-97 (18)226-(02)227 none 1923 99 221-224 (14)123-(23)123 none (14)230-(04)231 (17)259-(13)260 1924 98 8-13,254-255 (15)027-(22)027 none 1925 99 355-356 none none 1926 99 18-19 (14)003-(11)004 none 1927 100 none none none 1928 97 62-64,98-104,154-156 none none 1929 96 28-30,42-48,54-56, (12)018-(10)019 none 63-65,79-80 (19)030-(13)031 (02)032-(13)032 (19)039-(14)040 (15)068-(11)069 (16)089-(15)090 1930 100 none none none 1931 100 none none none 1932 99 289-290 none none 1933 100 none none none 1934 91 274-304 none none 1935 96 63-66,68-76,293-295, (18)061-(12)062 none 360-363 (15)078-(14)079 (12)086-(06)087 (18)236-(11)237 1936 99 269-270 (13)011-(12)012 none 1937 88 19-20,26-51,57-59, (15)337-(13)338 none 340-347,354-363 1938 99 361-364 (14)033-(13)034 none 1939 99 28-30,40-41,52-53 (18)021-(13)022 none (15)024-(12)025 (16)045-(06)046 (15)048-(12)049 (16)259-(12)260 (23)355-(10)356 (06)364-(14)364 1940 96 1-4,29-31,32-36,71- (17)027-(08)028 none 75,84-86 (19)028-(10)029 (16)038-(10)039 (02)055-(10)055 (11)056-(10)057 (15)060-(09)061 (12)064-(10)065 (12)087-(10)088 (15)246-(13)247 1941 95 229-231,234-238,243- (14)022-(08)023 none 251,361-365 (19)225-(11)226 (05)233-(17)233 (17)239-(10)240 1942 86 1-17,23-25,29-45,47- (00)021-(23)021 none 48,52-55,59-61,64- (14)086-(02)087 66,81-83,159-160, (14)088-(10)089 238-241 (18)095-(09)096 (07)243-(15)243 1943 100 none (21)207-(18)208 none 1944 100 none (14)038-(13)039 none (13)133-(12)134 (06)135-(05)136 1945 98 7-8,350-356 (17)250-(02)251 none 1946 57 208-365 (22)054-(13)055 none (18)060-(14)061 (03)170-(19)170 1947 48 1-151,159-162,184- (00)192-(07)192 none 188,193-194,212-213, (02)206-(18)206 215-217,240-241,244- (23)210-(10)211 245,272-273,275-289, (06)221-(17)221 291-293,295-301,303- (05)229-(14)229 305,309-311 (12)231-(09)232 (21)232-(10)233 (09)235-(17)235 (04)237-(12)237 (18)238-(11)239 (00)242-(15)242 (04)255-(12)255 (23)255-(13)256 (19)256-(13)257 (18)267-(12)268 (21)269-(16)270 (18)273-(13)274 (02)294-(15)294 (05)307-(17)307 1948 99 52-53,157-158 (08)159-(15)159 none (03)297-(12)297 1949 99 276-278 (01)125-(08)125 none (03)127-(16)127 (16)173-(23)173 (21)290-(14)291 (07)363-(06)364 1950 99 132-134,216-217 (20)008-(14)009 none (17)015-(15)016 (17)025-(06)026 (03)091-(14)091 (22)202-(17)203 (18)283-(14)284 1951 99 223-224,257-258 (06)141-(16)141 none (08)221-(15)221 (18)267-(10)268 1952 100 none (17)162-(06)163 none 1953 99 144-147,156-158 none none 1954 99 65-66,186-188 (17)216-(16)217 none 1955 100 none none none 1956 100 none none none 1957 99 49-50,152-153 (20)068-(08)069 none (22)100-(16)101 (17)125-(16)126 (06)132-(15)132 (20)142-(06)143 (18)211-(16)212 (21)270-(15)271 (14)313-(13)314 1958 98 174-177,181-184 (02)029-(14)029 none (04)162-(17)162 (23)166-(10)167 (15)177-(13)178 1959 99 215-217 (20)246-(18)247 none (16)335-(14)336 1960 96 10-11,52-53,71-73, (18)011-(10)012 none 145-154,307-308 (18)014-(13)015 (00)016-(09)016 (17)022-(12)023 (21)040-(05)041 (19)041-(15)042 (23)120-(06)121 (20)147-(15)148 (20)156-(15)157 (18)237-(14)238 (15)249-(12)250 1961 97 79-81,85-87,211-213, (20)166-(07)167 none 223-225,311-312,336- (20)167-(05)168 340 (00)314-(10)314 1962 100 none (08)221-(15)221 none 1963 100 none (19)050-(13)051 none (10)273-(07)274 1964 100 none none none 1965 99 155-156 none none 1966 99 190-191 none none 1967 100 none none none 1968 98 240-242,270-274 (16)128-(05)129 none (23)264-(15)265 1969 98 188-190,358-361, (14)185-(10)186 none 364-365 (22)287-(12)288 1970 100 none none none 1971 99 55-56 (12)326-(11)327 none 1972 82 1-39,340-366 none none 1973 93 1-2,229-253 none none 1974 94 130-132,244-265 (12)125-(07)126 none (01)133-(10)133 1975 99 94-96 none none 1976 100 none none none 1977 100 none none none 1978 99 32-33 none none 1979 100 none none none 1980 100 none none none 1981 100 none none none 1982 100 none none none 1983 94 152-174 none none 1984 65 31-60,121-152,182- none none 213,270-277,335-366 1985 56 1-73,120-155,181- none none 215,235-244,266-274, 303-304 1986 100 none (08)186-(16)186 none (19)344-(06)345 1987 92 121-152 none none 1988 100 none none none 1989 84 182-192,212-243,244- none none 257,360-365 1990 97 1-12 none none 1991 92 290-311,313-315,333- (19)331-(06)332 none 337,264-365 (21)337-(12)338 (15)355-(08)356 1992 87 1,71-72,139-141,165- (00)004-(10)004 none 166,180-181,199-201, (15)005-(22)005 203-226,254-262,295- (22)024-(10)025 301 (09)039-(16)039 (11)043-(10)044 (00)063-(10)063 (14)099-(07)100 (08)127-(19)127 (19)133-(05)134 (17)147-(06)148 (13)168-(05)169 (18)185-(06)186 (09)196-(05)197 (20)197-(05)198 (21)236-(06)237 (20)266-(10)267 (21)293-(11)294 (15)322-(06)323 (08)335-(19)335 (12)338-(06)339 (21)339-(10)340 (20)341-(06)342 (14)343-(06)344 (22)351-(06)352 (17)358-(07)359 (15)362-(09)363 1993 97 64-74,166-168 (01)004-(09)004 none (17)007-(06)008 (12)095-(21)095 1994 100 none (05)135-(16)135 none 1995 98 191-193,216-221 (20)235-(06)236 none (21)270-(04)271 (11)309-(08)310 1996 99 80-82,237-239 (17)096-(00)097 none 1997 99 207-208 none none 1998 99 107-109,116-118 (12)110-(11)111 none (03)112-(23)112 1999 100 none (19)337-(05)338 none 2000 100 none none none 2001 100 none none none 2002 100 none (02)213-(09)213 none 2003 100 none none none 2004 100 none none none 2005 99 260-263 (08)331-(07)332 none 2006 100 none none none 2007 96 72-79,284-291 none none 2008 99 67-70 none none 2009 100 none none none 2010 100 none none none 2011 89 46-83,116-119 (18)295-(13)296 none 2012 98 182-184,296-300 none none