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Hydrochemistry at time series station Helgoland Roads, North Sea, in 2023

Description: In 2023, 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 immediately on board using a Secchi Disk. Salinity, dissolved inorganic nutrients, pH and oxygen were measured from a bucket sample in the laboratory. Further information regarding the methodology and the devices used can be found in the metadata description.

Global identifier: 

Doi(
    "10.1594/PANGAEA.984759",
)

Types: 
DataMeasurements(
    DataMeasurements {
        domain: Unspecified,
        station: None,
        measured_variables: [
            "Ammonium",
            "Analyst",
            "DATE/TIME",
            "DEPTH, water",
            "Depth of Secchi Disk",
            "LATITUDE",
            "LONGITUDE",
            "Location",
            "Nitrate",
            "Nitrate and Nitrite",
            "Nitrite",
            "Nitrogen, inorganic, dissolved",
            "Oxygen",
            "Phosphate",
            "Quality flag, ammonium",
            "Quality flag, nitrate and nitrite",
            "Quality flag, nitrite",
            "Quality flag, oxygen",
            "Quality flag, pH",
            "Quality flag, phosphate",
            "Quality flag, salinity",
            "Quality flag, secchi disk",
            "Quality flag, silicate",
            "Quality flag, water temperature",
            "Salinity",
            "Silicate",
            "Temperature, water",
            "pH",
        ],
        methods: [
            "Argo quality control flags according to Thierry et al. (2022)",
            "Calculated (difference of Nitrate and Nitrite and Nitrite)",
            "Calculated (sum of Nitrate, Nitrite, Ammonium)",
            "Digital thermometer, HANNA instruments, HI-98501",
            "Dissolved oxygen meter, WTW, FDO 925",
            "Mercury thermometer",
            "Salinometer, Guildline Instruments, 8400B Autosal",
            "Secchi disk",
            "Spectrophotometer, Hitachi, U-1100",
            "pH meter, WTW, SenTix 940",
        ],
    },
)

Comment: The photometer, with which the nutrients have been analysed, has been replaced. Until 2023-08-16 device "Spectrophotometer, Hitachi, U-1100" with link https://registry.o2a-data.de/items/12101 has been used. From 2023-08-17 onwards device "Spectrophotometer, Varian, Cary 4000" with link https://registry.o2a-data.de/items/12104 has been in use.

Origins: /Wissenschaft/PANGAEA

Tags: Ammonium ? Nitrit ? Nitrat ? Ammoniumstickstoff ? Nährstoff ? Wassertemperatur ? Geografische Koordinaten ? Metadaten ? Salzgehalt ? Hydrochemie ? Oberflächengewässer ? Wasserqualität ? Zeitreihe ? Nordsee ? LTER ? LTO ?

Region: Jadebusen

Bounding boxes: 7.89147° .. 7.9° x 54.18404° .. 54.184167° 8.2042° .. 8.2042° x 53.48245° .. 53.48245°

License: cc-by/4.0

Data access requires registration: click here for further information

Language: Englisch/English

Organisations

Persons

Modified: 2025-10-27

Time ranges: 2023-01-02 - 2023-12-29

Resources

Status

Quality score

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