Kirstein, Inga Vanessa; Carstens, Kristine; Wiltshire, Karen Helen (2026): Hydrochemistry at time series station Helgoland Roads, North Sea, in 2013 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.995415 (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: 2026-06-10
Abstract:
In 2013, 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, dissolved inorganic nutrients, pH and oxygen were measured from a bucket sample in the laboratory.
Original version:
Wiltshire, Karen Helen (2016): Hydrochemistry at time series station Helgoland Roads, North Sea, in 2013 [dataset]. Alfred Wegener Institute - Biological Institute Helgoland, PANGAEA, https://doi.org/10.1594/PANGAEA.864676
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: 2013-01-01T08:20:00 * Date/Time End: 2013-12-30T08:40:00
Minimum DEPTH, water: 0.5 m * Maximum DEPTH, water: 0.5 m
Event(s):
HelgolandRoads2013 (Kabeltonne) * Latitude: 54.188000 * Longitude: 7.900000 * Date/Time Start: 2013-01-01T00:00:00 * Date/Time End: 2013-12-31T23:59:59 * 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):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DATE/TIME | Date/Time | Kirstein, Inga Vanessa | Geocode | ||
| 2 | LATITUDE | Latitude | Kirstein, Inga Vanessa | Geocode | ||
| 3 | LONGITUDE | Longitude | Kirstein, Inga Vanessa | Geocode | ||
| 4 | DEPTH, water | Depth water | m | Kirstein, Inga Vanessa | Geocode – water sample taken with bucket at water surface | |
| 5 | Location | Location | Kirstein, Inga Vanessa | HR = Roads | ||
| 6 | Depth of Secchi Disk | z(SD) | m | Kirstein, Inga Vanessa | Secchi disk (SD) | https://registry.o2a-data.de/items/10609 |
| 7 | Quality flag, Secchi Disk | QF SD | Kirstein, Inga Vanessa | Argo 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 | |
| 8 | Temperature, water | Temp | °C | Kirstein, Inga Vanessa | Reversing thermometer | |
| 9 | Quality flag, water temperature | QF water temp | Kirstein, Inga Vanessa | Argo 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 | |
| 10 | Analyst | Analyst | Kirstein, Inga Vanessa | of Secchi Disk and temperature | ||
| 11 | Salinity | Sal | Kirstein, Inga Vanessa | Salinometer, Guildline Instruments, 8400B Autosal | https://registry.o2a-data.de/items/10605 | |
| 12 | Quality flag, salinity | QF sal | Kirstein, Inga Vanessa | Argo 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 | |
| 13 | Analyst | Analyst | Kirstein, Inga Vanessa | of salinity | ||
| 14 | Silicate | Si(OH)4 | µmol/l | Kirstein, Inga Vanessa | Seawater analysis after Grasshoff et al. (1983) | 0.01 - 80 µmol/l |
| 15 | Quality flag, silicate | QF Si(OH)4 | Kirstein, Inga Vanessa | Argo 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 | |
| 16 | Phosphate | [PO4]3- | µmol/l | Kirstein, Inga Vanessa | Seawater analysis after Grasshoff et al. (1983) | 0.01 - 3 µmol/l |
| 17 | Quality flag, phosphate | QF [PO4]3- | Kirstein, Inga Vanessa | Argo 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 | |
| 18 | Nitrite | [NO2]- | µmol/l | Kirstein, Inga Vanessa | Seawater analysis after Grasshoff et al. (1983) | 0.01 - 16 µmol/l |
| 19 | Quality flag, nitrite | QF [NO2]- | Kirstein, Inga Vanessa | QC flag meanings: 0:no QC, 1: good, 2:probably good, 3: probably bad, 4: bad, 5: changed, 8: estimated, 9: missing | ||
| 20 | Nitrate | [NO3]- | µmol/l | Kirstein, Inga Vanessa | Calculated (difference of (Nitrate and Nitrite) and Nitrite) | |
| 21 | Nitrate and Nitrite | [NO3]- + [NO2]- | µmol/l | Kirstein, Inga Vanessa | Seawater analysis after Grasshoff et al. (1983) | 0.1 - 250 µmol/l |
| 22 | Quality flag, nitrate and nitrite | QF [NO3]- + [NO2]- | Kirstein, Inga Vanessa | Argo 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 | |
| 23 | Ammonium | [NH4]+ | µmol/l | Kirstein, Inga Vanessa | Seawater analysis after Grasshoff et al. (1983) | 0.01 - 15 µmol/l |
| 24 | Quality flag, ammonium | QF [NH4]+ | Kirstein, Inga Vanessa | Argo 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 | |
| 25 | Nitrogen, inorganic, dissolved | DIN | µmol/l | Kirstein, Inga Vanessa | Calculated (sum of Nitrate, Nitrite, Ammonium) | |
| 26 | Analyst | Analyst | Kirstein, Inga Vanessa | of nutrient | ||
| 27 | Condition | Cond | Kirstein, Inga Vanessa | of sample: F = fresh, SF = frozen | ||
| 28 | pH | pH | Kirstein, Inga Vanessa | |||
| 29 | Quality flag, pH | QF pH | Kirstein, Inga Vanessa | Argo 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 | |
| 30 | Oxygen | O2 | mg/l | Kirstein, Inga Vanessa | ||
| 31 | Quality flag, oxygen | QF O2 | Kirstein, Inga Vanessa | Argo 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 | |
| 32 | Analyst | Analyst | Kirstein, Inga Vanessa | of oxygen and pH |
Change history:
2026-06-11T11:27:58 – This version replaces doi:10.1594/PANGAEA.864676 .
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:
6427 data points
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