Deutsches Ozeanographisches
Datenzentrum Inventur der Polarstern-Reise PS106-2 ARK-XXXI/1-2 (DOD-Ref-No.20170084)
Inventory of Polarstern Cruise PS106-2 ARK-XXXI/1-2 (DOD-Ref-No.20170084)

Plattform
Platform
Reise-Nr.
Cruise-No.
Zeitraum
Period
Projekt
Project
Arbeitsgebiet
Working area
Polarstern PS106-2 ARK-XXXI/1-2 23.06.2017 - 20.07.2017   Barents Sea Arctic Ocean  

Fahrtleiter
Chief Scientist
Institut
Institute
Auslaufhafen
Port of departure
Einlaufhafen
Port of return
Stationskarte
Station map
Schiffsroute
Trackchart
Flores Hauke Alfred-Wegener-Institut fur Polar- und Meeresforschung Longyearbyen Troms?   

Ziel der Reise / Objectives of Cruise:

Polar cod (Boreogadus saida) takes a key role in Arctic ecosystems, because it constitutes the staple food of seals and seabirds. Young polar cod live often associated with the underside of sea ice for foraging and protection from higher predators. Due to climate change, the extent of the under-ice habitat is decreasing. On PS 106/2, SiPCA (Survival of Polar Cod in a Chaning Arctic Ocean) aimed to investigate the importance of sea ice for polar cod in the Barents Sea and the adjacent Arctic Ocean. We simultaneously sampled the spatial distribution of polar cod, its prey, its predators and other environmental parameters using fishing nets and ocean sensors. In parallel, we continued large parts of the continuous atmospheric sampling programme begun on PS 106/1, and investigated the physical and biogeochemical properties of sea ice and melt ponds during five sea ice stations. The data obtained from this expedition will contribute to a more quantitative understanding of the sea ice-associated ecosystem, its importance for polar cod, physical and biogeochemical processes of sea ice and meltponts, as well as atmospheric dynamics in the Arctic. Polarstern left Longyearbyen on June 23rd, 14:00 local time. Continuous measurements of the water column and the atmosphere were started after leaving the 12 nm-zone. On June 24th we started a series of daily sampling stations focusing on the chemical composition of the sea surface microlayer. An ice station was completed on June 26th. Here, we took samples of sea ice and the underlying water and deployed our ROV. We then performed 3 stations south of the Island Kwitoya, where we used bottom trawls, CTDs, plankton nets and collected water samples. On June 27th, we continued our way northwards. North of the island Kwitoya, we performed another ice station on June 29th. Proceeding northwards from there, we sampled with various plankton nets and CTDs. After arriving on the shelf slope, we started a hydrographical transect into the deep sea, performing CTD casts at high spatial resolution. On July 1st we concluded our hydrographical transect across the Barents Sea shelf slope between 32 and 33?E. We then proceeded northwards, conducting continuous measurements of atmospheric properties and biological water column parameters. Surface microlayer samples were taken, CTDs, zooplankton nets and our under-ice trawl were deployed at regular intervals together with optical and acoustical zooplankton detectors. On the night from June 2nd to June 3rd we conducted the third ice station. We then resumed our sampling of physical and chemical water properties, zooplankton and under-ice fauna, as we continued north until reaching the northernmost position of this expedition at 83?43'N 32?18'E. Here, we performed the fourth ice station. After our ice station at 83?30'N 28?E was concluded on July 6th, we turned south, conducting continuous measurements of atmospheric properties and biological water column parameters. On the night from July 11th to July 12th we conducted the fifth ice station at the PASCAL floe of PS 106/1. Leaving the ice station, we conducted a hydrographical transect up the Svalbard shelf slope in the night from July 12th to July 13th. Then, we continued east, only interrupted by our daily surface microlayer programme and occasional CTDs. From July 15th to July 17th we conducted a bottom trawl survey to the east of the islands Nordaustlandet and Spitzbergen, between the ice edge and the 12-miles zone. The scientific station work was completed on July 17th.On the way to Tromso, underway-measurements were continued, but were stopped before reaching the 12 miles-zone of the Norwegian mainland. We arrived at our final destination Tromso on July 20th.

Messungen / Measurements

Institut
Institute
Wissenschaftler
Scientist
Anzahl
Number
Einheit
Unit
Typ der Messungen
Type of measurements
Kommentar
Comments
Daten im DOD
Data in DOD
AWI Metfies Katja 18 samples B02
Phytoplankton pigments (e.g. chlorophyll, fluorescence)
From CTD. no
AWI Niehoff B. 19 deployment B09
Zooplankton
Multinet. no
AWI Niehoff B. 21 deployment B09
Zooplankton
Lightframe On-Sight Key Species Investigations (LOKI). no
AWI Flores Hauke 6 hauls B09
Zooplankton
ROVnet. no
AWI Flores Hauke 14 hauls B09
Zooplankton
Rectangular Midwater Trawl (RMT). no
AWI Flores Hauke 22 hauls B09
Zooplankton
Surface and Under-Ice Trawl (SUIT). no
AWI Bock Christian 10 hauls B19
Demersal fish
Bottom Trawl. no
AWI Flores Hauke 8 survey B25
Birds
Bird and mammal census from helicopter. no
AWI Flores Hauke 25 day(s) B25
Birds
Bird and mammal census from Peildeck. no
AWI Metfies Katja 16 samples B71
Particulate organic matter (e.g. POC, PON)
From CTD. no
AWI Metfies Katja 33 samples B71
Particulate organic matter (e.g. POC, PON)
DNA samples with AutoFim. no
AWI Peeken Ilka 198 samples B90
Other biological / fishery measurements
Ice cores for biological parameters. no
AWI Flores Hauke 25 day(s) G74
Multi-beam echosounding
EK60 zooplankton and fish survey. no
AWI Nikolaus Marcel 5 profiles G90
Other geological or geophysical measurements
ROV profiles. no
AWI Nikolaus Marcel 5 survey G90
Other geological or geophysical measurements
Ice thickness surveys (EM-Bird). no
AWI Nikolaus Marcel 6 profiles G90
Other geological or geophysical measurements
GEM (ice thickness) profiles. no
AWI Nikolaus Marcel 6 profiles G90
Other geological or geophysical measurements
Snow depth (Magna Probe). no
AWI Nikolaus Marcel 6 profiles G90
Other geological or geophysical measurements
Snow profiles. no
AQUABI Nikolopouzlos Anna 10 deployment H10
CTD-Stations
Expandable CTD (XBT). no
AQUABI Nikolopouzlos Anna 32 deployment H10
CTD-Stations
. no
AWI Flores Hauke 3 deployment H10
CTD-Stations
Handheld CTD. no
UGOTH Heuze Celine 4 deployment H13
Bathythermograph drops
. no
IFT Macke Andreas 29 deployment H90
Other chemical oceanographic measurements
Surface microlayer chemistry sampling. no
AWI Nikolaus Marcel 2 meas. M02
Incident radiation
Hyperspectral incoming light. no
UNIBRE Palm Mathias 25 meas. M02
Incident radiation
FTIR. no
CAUKI Oppelt Natascha 14 survey M02
Incident radiation
Hyperspectral meltpond surveys with helicopter. no
AWI Nikolaus Marcel 5 stations M04
Ice observations
Sea ice stations (multiple physical, biogeochemical, biological, atmospheric parameters). no
IFT Macke Andreas 16 samples M71
Atmospheric chemistry
Aerosol particle sampling (with Berner impactor and High volume Digitel PM1 sampler). no
IFT Macke Andreas 25 day(s) M71
Atmospheric chemistry
Raman lidar PollyXT. no
IFT Macke Andreas 25 day(s) M90
Other meteorological measurements
Radiation budget measurements from microwave radiometer. no
UNITRI Heinemann Gunther 25 day(s) M90
Other meteorological measurements
Wind lidar. no
AWI Nikolaus Marcel 24 obs. M90
Other meteorological measurements
Sea ice observations during transit. no
UNIBRE Palm Mathias 25 meas. M90
Other meteorological measurements
FTIR. no
23.3.2024