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Boetius, Antje; Albrecht, Sebastian; Bakker, Karel; Bienhold, Christina; Felden, Janine; Fernández-Méndez, Mar; Hendricks, Stefan; Katlein, Christian; Lalande, Catherine; Krumpen, Thomas; Nicolaus, Marcel; Peeken, Ilka; Rabe, Benjamin; Rogacheva, Antonina; Rybakova, Elena; Somavilla Cabrillo, Raquel; Wenzhöfer, Frank; ARK-XXVII/3 Shipboard Scientific Party (2013): Distribution of algal aggregates and characteristics of sea ice stations investigated druing POALRSTERN cruise ARK-XXVII/3 (IceArc). PANGAEA, https://doi.org/10.1594/PANGAEA.803431, In supplement to: Boetius, A et al. (2013): Export of algal biomass from the melting Arctic sea ice. Science, 339(6126), 1430-1432, https://doi.org/10.1126/science.1231346

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Coverage:
Median Latitude: 84.697542 * Median Longitude: 89.972729 * South-bound Latitude: 81.884667 * West-bound Longitude: 31.109500 * North-bound Latitude: 88.827670 * East-bound Longitude: 131.128670
Date/Time Start: 2012-08-09T08:08:00 * Date/Time End: 2012-09-23T22:10:00
Minimum Elevation: -4383.5 m * Maximum Elevation: -3424.0 m
Event(s):
PS80/224-1 (Ice station #1) * Latitude Start: 84.050500 * Longitude Start: 31.113830 * Latitude End: 84.033833 * Longitude End: 31.109500 * Date/Time Start: 2012-08-09T08:08:00 * Date/Time End: 2012-08-11T12:23:00 * Elevation Start: -4013.0 m * Elevation End: -4011.0 m * Campaign: ARK-XXVII/3 (PS80 IceArc) * Basis: Polarstern * Device: Ice station (ICE) * Comment: Position sensor: Ship's GPS; Wind speed start: 0.2 kn; Wind speed end: 0.2 kn; Sea ice coverage start: 95 %; Sea ice coverage end: 95 %
PS80/237-1 (Ice station #2) * Latitude Start: 83.986500 * Longitude Start: 78.103330 * Latitude End: 83.933667 * Longitude End: 75.504667 * Date/Time Start: 2012-08-14T13:10:00 * Date/Time End: 2012-08-16T18:42:00 * Elevation Start: -3484.0 m * Elevation End: -3424.0 m * Campaign: ARK-XXVII/3 (PS80 IceArc) * Basis: Polarstern * Device: Ice station (ICE) * Comment: Position sensor: Ship's GPS; Wind speed start: 0.3 kn; Wind speed end: 0.6 kn; Sea ice coverage start: 90 %; Sea ice coverage end: 80 %
PS80/255-1 (Ice station #3) * Latitude Start: 82.670670 * Longitude Start: 109.589500 * Latitude End: 83.142333 * Longitude End: 109.929333 * Date/Time Start: 2012-08-20T08:48:00 * Date/Time End: 2012-08-22T11:49:00 * Elevation Start: -3569.0 m * Elevation End: -3608.0 m * Campaign: ARK-XXVII/3 (PS80 IceArc) * Basis: Polarstern * Device: Ice station (ICE) * Comment: Position sensor: Ship's GPS; Wind speed start: 0.6 kn; Wind speed end: 0.9 kn; Sea ice coverage start: 95 %; Sea ice coverage end: 95 %
Comment:
Nutrients were analyzed in an air-conditioned lab container with a Technicon TRAACS 800, continuous flow auto analyzer. Measurements were made simultaneously on four channels: phosphate, silicate, nitrate and nitrite together, and nitrite separately. All measurements were calibrated with standards diluted in low nutrient seawater.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Event labelEvent
2Optional event labelEvent 2
3Date/Time of eventDate/Time
4Latitude of eventLatitude
5Longitude of eventLongitude
6Ice coverageIce cov%Boetius, AntjeSea ice observation according to ASSIST protocol
7Ice thickness, minimumIce thick minmBoetius, AntjeSea ice observation according to ASSIST protocol
8Ice thickness, maximumIce thick maxmBoetius, AntjeSea ice observation according to ASSIST protocol
9Ice typeIce typeBoetius, AntjeSea ice observation according to ASSIST protocol
10Melt pond coverage on sea iceMelt pond cov%Boetius, AntjeSea ice observation according to ASSIST protocol
11DriftDriftknBoetius, AntjeMeteorological observation according to ASSIST protocol
12Drift, standard deviationDrift std dev±Boetius, AntjeMeteorological observation according to ASSIST protocol
13Short-wave downward (GLOBAL) radiationSWDW/m2Boetius, AntjeNet radiometer, Kipp & Zonen, CNR 4
14Short-wave downward (GLOBAL) radiation, standard deviationSWD std devW/m2Boetius, AntjeNet radiometer, Kipp & Zonen, CNR 4
15Radiation, photosynthetically activePARW/m2Boetius, AntjeNet radiometer, Kipp & Zonen, CNR 4under ice
16Temperature, airTTT°CBoetius, AntjeThermometer
17Temperature, waterTemp°CBoetius, AntjeThermosalinographat 5m water depth
18SalinitySalBoetius, AntjeThermosalinographat 5 m water depth
19Mixed layer depthMLDmBoetius, Antje
20Melt water depthMWDmBoetius, AntjeCalculatedEstimates based on seasonal inventories of the mixed layer depth of the previous freezing season (see SOM).
21Nitrate[NO3]-µmol/lBoetius, Antjein 0-2 m water depth under ice
22Nitrogen/Silicon ratioN/SiBoetius, AntjeCalculatedin 0-2 m water depth
23Nitrogen/Phosphorus ratioN/PBoetius, AntjeCalculatedin 0-2 m water depth
24Primary production of carbon per area, dailyPP C areag/m2/dayBoetius, AntjeCalculatedin 0-1 m water depth under ice, 14C
25Primary production of carbon per area, yearlyPP C areag/m2/aBoetius, AntjeCalculatedEstimates based on seasonal inventories of the mixed layer depth of the previous freezing season (see SOM).
26DiatomsDiatoms%Boetius, AntjeEstimates based on seasonal inventories of the mixed layer depth of the previous freezing season (see SOM).
27Algal coverAlgal cov%Boetius, AntjeSub-ice
28Ice algae compositionIce algae compBoetius, AntjeDiverse algae included in various ratios Porosira sp., Pleurosigma, Nitzschia sp., Fragilariopsis sp., Entomoneis sp, Chaetoceros sp., Navicula sp., Cylindrotheca and other chain-forming pennate diatoms, chloroplasts clumps.
29Algal coverAlgal cov%Boetius, Antjeat seafloor; * = Estimates include discolored patches/degraded algal patches
30Algal cover, standard deviationAlgal cov std dev±Boetius, Antje
31Pigment concentration in sedimentPigm Concµg/cm3Boetius, Antjetop 1 cm sediment layer
32Pigment concentration in sediment, standard deviationPigm Conc std dev±Boetius, Antje
33Chlorophyll a/chloroplastic pigment equivalents ratioChl a/CPE%Boetius, Antje
34Megafauna, biomass, wet massMegaf biom wmg/m2Boetius, Antje
35Chloroplastic pigment equivalents of gut contentCPE gutµg/cm3Boetius, Antje
36Chloroplastic pigment equivalents of gut content, standard deviationCPE gut std dev±Boetius, Antje
37Chlorophyll a/chloroplastic pigment equivalents ratioChl a/CPE%Boetius, Antjeof gut content
38Ice algae compositionIce algae compBoetius, Antjein sediment/gut
39Ice algae, deposition of carbonIce algae depos Cg/m2Boetius, AntjeCalculated
40Elevation of eventElevationm
Size:
255 data points

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