TY - DATA
T1 - Downward vertical flux of particulate organic carbon (POC) and nitrogen (PON) in the northern Barents Sea during December 2019, Nansen Legacy cruise 2019711 Q4
AU - Bodur, Yasemin V.
AU - Marquardt, Miriam
AU - Dubourg, Paul
AU - Amargant-Arumí, Martí
AU - Reigstad, Marit
PY - 2023
PB - Norstore
UR - https://doi.org/10.11582/2023.00094
DO - 10.11582/2023.00094
ER -
Bodur, Y. V., Marquardt, M., Dubourg, P., Amargant-Arumí, M., Reigstad, M. (2023).Downward vertical flux of particulate organic carbon (POC) and nitrogen (PON) in the northern Barents Sea during December 2019, Nansen Legacy cruise 2019711 Q4 [Data set]. Norstore. https://doi.org/10.11582/2023.00094
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Description |
Samples for sinking mass flux of particulate organic carbon (POC) and nitrogen (PON) were collected with short-term drifting sediment traps between 75° and 85°N in the northern Barents Sea with R/V Kronprins Haakon in December 2019 as part of the Nansen Legacy project (cruise 2019711, Q4). High-density bottom water was collected at the station and filtered (Whatman GF/F 0.7µm), and then filled into the trap cylinders (KC Denmark, aspect ratio >6) prior to their deployment. Afterwards, the sediment traps were deployed with 2 or 4 cylinders at each depth (30, 40, 60, 90, 120, 200m) for a duration between 28 to 42 hours. Depending on the sea ice conditions, the sediment traps were deployed in open water, anchored to a sea ice floe or within an ice lead. At one station, a sediment trap was deployed though a sea ice hole for 12 hours. Upon retrieval, the content of the cylinders from each depth was pooled and stored at 4°C in dark until further analyses. Between 250-1000ml were filtered onto pre-combusted 0.7µm GF/F filters (Whatman, combusted for 7h at 450°C) for the analysis of POC and PON. The filters were then packed in combusted aluminium foil and stored at -20°C. In the lab, the filters were dried for 24h at 60°C and subsequently acid-fumed in HCl for 24h to remove all inorganic carbon. Afterwards, they were dried once again for 24h at 60°C, packed into tin capsules and measured with a CHN elemental analyzer (CE440, Exeter Analytical).
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