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The phytoplankton and ice-algae dataset contains counts of algae performed in an Imaging Flow Cytobot (IFCB) and in an inverted microscope. The counts were performed after the cruise using fixed samples collected from the sea ice and the water column.
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Biogeochemical and environmental data from sea ice (thick second-year/first-year ice and young ice in a refrozen lead).
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Bottle data collected from the ship water sampler during N-ICE2015 | January-June 2015 | North-west Svalbard
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N-ICE2015 bottle data from on-ice water sampler
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This dataset contains results from water column samples collected during the N-ICE2015 cruise with Niskin bottles of a ship-mounted CTD, an on-ice CTD and a hand-held Limnos sampler. Measured variables include * inorganic nutrients (ammonium, nitrate plus nitrite, phosphate and silicate) * chlorophyll a and phaeopigments * particulate organic carbon and nitrogen * total particulate silica * dissolved organic carbon and total dissolved nitrogen * dissolved oxygen * HPLC pigments (added in version 2 for the phytoplankton bloom period - see methods below for pigment full names). Samples were collected between the surface and 4090 m depth from January until June 2015. The data file contains information on the date, hour, latitude, longitude and depth of each sample. Not all variables were collected during the same CTD casts due to volume limitations of the Niskin bottles. However, they were collected on consecutive casts. Therefore, it is possible to gather information for almost all the listed variables for the same dates. Details on the sampling and analytical methods are given below. More water column data (e.g. temperature, salinity) can be found in https://doi.org/10.21334/npolar.2016.516bc529 and https://doi.org/10.21334/npolar.2016.089354c2.