Dissolved methane concentration variability along freshwater-sea continuum at Heligoland, Southern North Sea, 2021

The dataset is about temporal variability of dissolved methane along the freshwater-sea continuum in northern Germany. Sensors were installed at fixed stations at in total three sites at different water depths. This dataset is from the station in Heligoland (54.1833 N, 7.8667 E) at about 9-12m depth...

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Bibliographic Details
Main Authors: Bussmann, Ingeborg, Anselm, Norbert, Fischer, Philipp, Lienkämper, Miriam
Format: Dataset
Language:English
Published: PANGAEA 2023
Subjects:
2021_Heligoland_CH4
Alfred-Wegener-Institute
DATE/TIME
dissolved methane
in situ data
MaGeCH
Methane
dissolved
Methane sensor
-4H- JENA engineering GmbH
CONTROS HydroC® CH₄
Modular Observation Solutions for Earth Systems
MOSES
Helgoland
Ingeborg
Kongsberg
Moses
Berichte zur Polar- und Meeresforschung
Reports on Polar and Marine Research
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.962224
https://doi.org/10.1594/PANGAEA.962224
Description
Summary:The dataset is about temporal variability of dissolved methane along the freshwater-sea continuum in northern Germany. Sensors were installed at fixed stations at in total three sites at different water depths. This dataset is from the station in Heligoland (54.1833 N, 7.8667 E) at about 9-12m depth (depending on the tide). The data was obtained between 27 April and 28 October in high frequency measurements (1 min) with a methane sensor from Kongsberg (4H Jena model CONTROS HydroC CH4,). Methane concentrations were calculated according to manufacturer's instructions, based on temperature and salinity values from UW-node Heligoland (Fischer, Philipp; Happel, Lea; Brand, Markus; Eickelmann, Laura; Lienkämper, Miriam; Bussmann, Ingeborg; Anselm, Norbert; Brix, Holger (2022): Hydrographical time series data of Helgoland, Southern North Sea, 2021. PANGAEA, https://doi.org/10.1594/PANGAEA.950173). A gap in the salinity data was replaced with the median value of the observed time span (31.66). For the quality control of the data a local range of 0.1 – 1000 nmol/L was set, a technical range for the pump power 2 – 8. Watt, a spike and gradient value of 1. For a more detailed description see the article cited in References.

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