Integrated net primary production during POLARSTERN cruise ARK-XXVII/3 (IceArc) in 2012


Depth-integrated in situ rates were calculated for each environment as a function of the available photosynthetically active radiation (PAR). Irradiance profiles were calculated for each environment (sea ice, melt pond, water under the ice and open water) from the daily average incoming solar shortwave irradiance measured by a pyranometer (Kipp & Zonen, Delft, Netherland) mounted on the ship. We used light attenuation coefficients of 10 m-1 for snow, 1.5 m-1 for sea ice (Perovich, 1996) and 0.1 m**-1 for Atlantic-influenced Arctic seawater, based on literature values and observations during the cruise. Planar irradiance was transformed to scalar irradiance according to Ehn and Mundy (2013) and Katlein et al., (2014). Water column production was integrated over the euphotic zone (1% of incoming irradiance) and sea ice production over the ice core thickness. Melt pond coverage and sea ice concentration were taken into account when calculating the total primary production per area.

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Creator Fernández-Méndez, Mar ORCID logo; Peeken, Ilka ORCID logo; Boetius, Antje ORCID logo
Publisher PANGAEA
Publication Year 2014
Funding Reference Seventh Framework Programme Crossref Funder ID 294757 Assessment of bacterial life and matter cycling in deep-sea surface sediments
Rights Creative Commons Attribution 3.0 Unported;
OpenAccess true
Resource Type Dataset
Format text/tab-separated-values
Size 198 data points
Discipline Earth System Research
Spatial Coverage (29.954W, 77.397S, 133.342E, 88.828N); Arctic Ocean; Laptev Sea
Temporal Coverage Begin 2012-08-06T07:04:00Z
Temporal Coverage End 2012-09-27T08:25:00Z