March 2022 - Campaign with the MS Burchana
March 2022 route. Recorded FerryBox data and sampling points during the March 2022 measurement campaigns. Karte: Lara Luitjens/NLWKN]
From 07th to 10th and on March 14, 2022, the Coastal Research Center (FSK) of the NLKWN carried out a new measurement campaign with the MS Burchana for Carbostore. Additional points were added to the tour, so that the campaign days were two days longer than the previous ones in 2021. The new points include part of the Ems to Weener, the East Frisian Gatje, the Dukegat, the Randzelgat and the Westerems, as well as point’s seaward from Borkum.
Water quality data (temperature, salinity, concentration of suspended matter, pH value, dissolved oxygen, chlorophyll, algae classes and carbon dioxide partial pressure) were recorded continuously and precisely with the Ferrybox during the campaign. Various samples were also taken manually for work packages 1 and 2. Due to the east wind, the water level was very low, so that some points could not be approached.
Julia Meyer (PhD student Hereon), Dagmar Daehne (Research Associate FSK-NLKWN) and Lara Luitjens (Technical Engineer FSK-NLWKN) accompanied these trips.
The next measurement campaign is expected to take place in May.
Sampling of mudflat sediments
Further sampling for CARBOSTORE took place in mudflat sediments in the Jade Bay near Dangast with researchers from Hereon, IOW and ICBM. Here, the analysis of sediments and pore waters will extend the understanding of benthic C-transformation processes and fluxes across the sediment-water interface.
CARBOSTORE campaigns with the MS Burchana
Data collection July and October 2021: Recorded FerryBox data and sampling points during the measurement campaigns in July and October 2021. [Map: NLWKN/Lara Luitjens]
From 12th to 15th July and 5th to 7th October 2021 for the CARBOSTORE project the first two campaigns took place with the MS Burchana, the research ship of the Lower Saxony State Agency for Water Management, Coastal and Nature Conservation (NLWKN).
Using an autonomous laboratory system (FerryBox) on board the MS Burchana, water quality parameters (temperature, salinity, suspended matter concentration, pH value, dissolved oxygen, chlorophyll, algae classes and carbon dioxide partial pressure) are continuously recorded during the cruises with precise time and position. In addition, for work packages 1 and 2, samples for nutrients, DIC/TA, DOC/DIC/H2O-isotopes, NO3-isotopes, TN/TP, DON/DOP, DOM and, among other things, for the analysis of metals in the July, sediment samples taken with the grab and scoop samples from the deck. Radon was also sampled in October.
Julia Meyer (PhD student Hereon), Dagmar Daehne (Research Associate NLKWN) and Lara Luitjens (Technical Engineer NLWKN) accompanied these cruises.
Four more measurement campaigns are planned for 2022. The first of the year is expected to take place in March.
(DIC = Dissolved Inorganic Carbon, TA = Total Alkalinity, DOC = Dissolved Organic Carbon, H2O = Water, NO3 = Nitrate, TN = Total Nitrogen, TP = Total Phosphorus, DON = Dissolved Organic Nitrogen, DOP = Dissolved Organic Phosphorus, DOM = Dissolved Organic Matter)
October 2021 - Research cruise Heincke HE586
From October 4th to 11th four CARBOSTORE members joined the Heincke 586 cruise along the Danish coast to the Skagerrak. The cruise was part of a student project of the University of Oldenburg / ICBM. For the participants from CARBOSTORE, the highlight of the cruise were three multicorer (MUC) stations in the Skagerrak where sediments, pore water and water samples were collected. These samples will be investigated for metals, nutrients, different isotopic signatures, alkalinity and dissolved carbon compounds. During the whole cruise, a FerryBox measured surface water parameters like pCO2, pH, chlorophyll fluorescence, CDOM, conductivity, temperature, turbidity and oxygen saturation. To map the different currents and mixing processes within the Skagerrak and the exchange between Baltic Sea and North Sea, 17 drifters were deployed along a transect from close to Torungen (Norway) to Hirtshals (Denmark). Further, almost 100 CTD profiles were measured along the transect through the Skagerrak, along the Danish and German coast and within the nature conservation areas “Sylter Außenriff” and “Borkum Riffgrund”.
September 2021 - Sampling campaign
Sampling at a tidal basin at the North Sea (Photo: IOW / Michael Böttcher).
During the campaign, samples of surface sediments and pore water were taken from a mud flume. The subsequent analysis of the dissolved substances is used to estimate the formation of dissolved inorganic carbon (DIC) and the total alkalinity (TA) in the sediment. Furthermore, the resulting benthic-pelagic material fluxes and their microbial influence will be investigated.
August 2021 - Field campaign
Sampling at the freshwater inflows into the southern North Sea (Photo: IOW / Michael Böttcher).
As part of the work for work package 1, samples were taken from the freshwater inflows into the southern North Sea. Particularly, sampling stations were at Dangast (Jade Bay), Neuharlingersiel (Sieltief), Herbrum (Ems), Farge/Bremen (Weser) and Geesthacht/Tesperhude (Elbe).
At these stations, samples for measuring dissolved organic material (DOM), dissolved organic carbon (DIC), total alkalinity (TA) as well as nutrients were taken.
For more information see: Work package 1
July 2021 - Kick-Off Meeting
Kick-Off-Meeting (Photo: Scott Graham/unsplash.com)
The kick-off meeting took place July, 13th 2021 where all work packages were presented and the collaboration with parallel projects as well as further sampling campaigns were discussed.
June 2021 - Research cruise with R.V. Alkor
Route of sampling campaign AL557 in June 2021. [Map: Hereon/Helmuth Thomas]
Samples were taken at stations throughout the North Sea to measure organic compounds, carbon, and nutrients. For this purpose, a CTD was used for the water column and a multicorer for sediment sampling. The methodology can be used to determine the sources and sinks of organic compounds, carbon and nutrients.