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Kirstein, Inga Vanessa; Carstens, Kristine; Wiltshire, Karen Helen (2026): Hydrochemistry at time series station Helgoland Roads, North Sea, in 2008 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.995432 (DOI registration in progress), In: Wiltshire, Karen Helen; Carstens, Kristine; Ecker, Ursula; Kirstein, Inga Vanessa (2024): Hydrochemistry at time series station Helgoland Roads, North Sea since 1873 [dataset publication series]. Alfred Wegener Institute - Biological Institute Helgoland, PANGAEA, https://doi.org/10.1594/PANGAEA.960375

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Published: 2026-06-15

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Abstract:
In 2008, the hydrochemistry of surface water was monitored at Helgoland Roads station on every workday, typically before 9 a.m. Temperature was measured on board immediately after sampling. Visibility was measured on board using a Secchi Disk. Salinity and dissolved inorganic nutrients were measured from a bucket sample in the laboratory.
Keyword(s):
LTER; LTO
Original version:
Wiltshire, Karen Helen (2009): Hydrochemistry at time series station Helgoland Roads, North Sea, in 2008 [dataset]. Alfred Wegener Institute - Biological Institute Helgoland, PANGAEA, https://doi.org/10.1594/PANGAEA.711767
References:
Grasshoff, Klaus; Ehrhardt, M; Kremling, Klaus (1983): Methods of seawater analysis. Verlag Chemie, Weinheim, 419 pp, https://doi.org/10.1002/iroh.19850700232
Thierry, Carval; Keeley, Robert; Takatsuki, Yasushi; Yoshida, Takashi; Loch, Stephen; Schmid, Claudia; Goldsmith, Roger; Wong, Annie; McCreadie, Rebecca; Thresher, Ann; Tran, Anh (2022): Argo user's manual. Ifremer, https://doi.org/10.13155/29825
Project(s):
Helgoland Roads long-term observations (LTO_HelgolandRoads)
Coverage:
Latitude: 54.188000 * Longitude: 7.900000
Date/Time Start: 2008-01-02T08:45:00 * Date/Time End: 2008-12-30T09:05:00
Minimum DEPTH, water: 0.5 m * Maximum DEPTH, water: 0.5 m
Event(s):
HelgolandRoads2008 (Kabeltonne) * Latitude: 54.188000 * Longitude: 7.900000 * Date/Time Start: 2008-01-01T00:00:00 * Date/Time End: 2008-12-31T23:59:59 * Elevation: -10.0 m * DEIMS ID: deims.org * O2A Registry URI: https://registry.o2a-data.de/items/8674 * Location: German Bight, North Sea * Campaign: LTER_HelgolandRoads (Kabeltonne, Long-term Ecological Research Helgoland Roads) * Basis: Marine Station Helgoland * Method/Device: Monitoring (MON)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1DATE/TIMEDate/TimeKirstein, Inga VanessaGeocode
2LATITUDELatitudeKirstein, Inga VanessaGeocode
3LONGITUDELongitudeKirstein, Inga VanessaGeocode
4DEPTH, waterDepth watermKirstein, Inga VanessaGeocode – water sample taken with bucket at water surface
5LocationLocationKirstein, Inga VanessaHR = Roads
6Depth of Secchi Diskz(SD)mKirstein, Inga VanessaSecchi disk (SD)https://registry.o2a-data.de/items/10609
7Quality flag, Secchi DiskQF SDKirstein, Inga VanessaArgo quality control flags according to Thierry et al. (2022)QC flag meanings: 0:no QC, 1: good, 2:probably good, 3: probably bad, 4: bad, 5: changed, 8: estimated, 9: missing
8Temperature, waterTemp°CKirstein, Inga VanessaReversing thermometer
9Quality flag, water temperatureQF water tempKirstein, Inga VanessaArgo quality control flags according to Thierry et al. (2022)QC flag meanings: 0:no QC, 1: good, 2:probably good, 3: probably bad, 4: bad, 5: changed, 8: estimated, 9: missing; Mercury thermometer
10AnalystAnalystKirstein, Inga Vanessaof Secchi Disk and temperature
11SalinitySalKirstein, Inga VanessaSalinometer, Guildline Instruments, 8400B Autosalhttps://registry.o2a-data.de/items/10605
12Quality flag, salinityQF salKirstein, Inga VanessaArgo quality control flags according to Thierry et al. (2022)QC flag meanings: 0:no QC, 1: good, 2:probably good, 3: probably bad, 4: bad, 5: changed, 8: estimated, 9: missing
13AnalystAnalystKirstein, Inga Vanessaof salinity
14SilicateSi(OH)4µmol/lKirstein, Inga VanessaSeawater analysis after Grasshoff et al. (1983)0.01 - 80 µmol/l
15Quality flag, silicateQF Si(OH)4Kirstein, Inga VanessaArgo quality control flags according to Thierry et al. (2022)QC flag meanings: 0:no QC, 1: good, 2:probably good, 3: probably bad, 4: bad, 5: changed, 8: estimated, 9: missing
16Phosphate[PO4]3-µmol/lKirstein, Inga VanessaSeawater analysis after Grasshoff et al. (1983)0.01 - 3 µmol/l
17Quality flag, phosphateQF [PO4]3-Kirstein, Inga VanessaArgo quality control flags according to Thierry et al. (2022)QC flag meanings: 0:no QC, 1: good, 2:probably good, 3: probably bad, 4: bad, 5: changed, 8: estimated, 9: missing
18Nitrite[NO2]-µmol/lKirstein, Inga VanessaSeawater analysis after Grasshoff et al. (1983)0.01 - 16 µmol/l
19Quality flag, nitriteQF [NO2]-Kirstein, Inga VanessaQC flag meanings: 0:no QC, 1: good, 2:probably good, 3: probably bad, 4: bad, 5: changed, 8: estimated, 9: missing
20Nitrate[NO3]-µmol/lKirstein, Inga VanessaCalculated (difference of (Nitrate and Nitrite) and Nitrite)
21Nitrate and Nitrite[NO3]- + [NO2]-µmol/lKirstein, Inga VanessaSeawater analysis after Grasshoff et al. (1983)0.1 - 250 µmol/l
22Quality flag, nitrate and nitriteQF [NO3]- + [NO2]-Kirstein, Inga VanessaArgo quality control flags according to Thierry et al. (2022)QC flag meanings: 0:no QC, 1: good, 2:probably good, 3: probably bad, 4: bad, 5: changed, 8: estimated, 9: missing
23Ammonium[NH4]+µmol/lKirstein, Inga VanessaSeawater analysis after Grasshoff et al. (1983)0.01 - 15 µmol/l
24Quality flag, ammoniumQF [NH4]+Kirstein, Inga VanessaArgo quality control flags according to Thierry et al. (2022)QC flag meanings: 0:no QC, 1: good, 2:probably good, 3: probably bad, 4: bad, 5: changed, 8: estimated, 9: missing
25Nitrogen, inorganic, dissolvedDINµmol/lKirstein, Inga VanessaCalculated (sum of Nitrate, Nitrite, Ammonium)
26AnalystAnalystKirstein, Inga Vanessaof nutrient
27ConditionCondKirstein, Inga Vanessaof sample: F = fresh, SF = frozen
Change history:
2026-06-11T11:55:29 – This version replaces doi:10.1594/PANGAEA.711767
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 2 (ProcLevel2)
Size:
5697 data points

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