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Nansen Legacy (Nansen Legacy)
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Abstract:
Ocean microstructure data were collected using a turbulence package mounted on a
light autonomous underwater vehicle (LAUV) during a cruise in February 2021,
to study ocean mixing processes near a surface temperature front in the Barents Sea.
The cruise onboard R/V Kronprins Haakon (KH2021702) was part of the Nansen Legacy
project, funded by the Research Council of Norway.
Turbulence data were collected using a modified version of a Rockland Scientific MicroRider
mounted on the LAUV. Dissipation rate was measured using two airfoil shear probes.
The measurements are from a 5 hour mission from 3 horizontal transects at target
depths of 10, 20 and 30 m.
The dataset is processed and prepared following the SCOR Working Group ATOMIX guidelines
and recommendations. The provided file includes four levels: the continuous time series of
full resolution data converted into physical units; the cleaned time series used for spectral
analysis, wavenumber spectra and the dissipation rate estimates. Additional data from the
LAUV with flight kinematics, location, temperature and salinity are also included.
Further details are provided in the comments.Access: unrestrictedShow more...
Abstract:
Inherent optical data collected in Storfjorden (Svalbard) in June 2020 onboard the coast guard vessel KV Svalbard during the Useful Arctic Knowledge project summer school. This data was collected as part of the Nansen Legacy project. Optical data collected includes in situ measurements of absorption and attenuation, accompanied by in situ profiles of salinity, temperature, pressure (CTD) and dissolved organic matter fluorescence (3-channel fluorometer).
Water samples were collected for measurements of dissolved (colored dissolved organic matter, CDOM) absorption, and material was collected on filters for determination of particulate absorption by phytoplankton and non-algal particles.
The CSV files in this collection include the spectral measurements of optical properties as follows:
icam_aphy.csv: Phytoplankton absorption coefficient (in 1/m) as measured with the QFT-ICAM technique
icam_anap.csv: Non-algal particle absorption coefficient (in 1/m) as measured with the QFT-ICAM technique
Perkin_ap.csv: Total particle absorption coefficient (1/m) as measured with the QFT_Perkin technique
CDOM.csv: Coloured Dissolved Organic Matter (CDOM) absorption coefficient (1/m)
and data on:
O18.csv: Oxygen isotope ratio (δ18O, in ‰ against VSMOW)
acs_fdom_ctd: High vertical resolution in situ cast data: total non-water absorption (1/m) and attenuation (1/m), Fluorescence by Dissolved Organic Matter (FDOM, raw digital signal counts), water salinity (practical salinity scale) and temperature (degrees Celsius).
FDOM was measured at three excitation/emission pairs as follows: Channel 1 (Ch1, 310/450 nm) that represents marine ultraviolet humic-like and marine humic-like material; for Channel 2 (Ch2, 280/450 nm) represents terrestrial humic-like material; and for Channel 3 (Ch3, 280/350 nm) represents protein-like tryptophane type material.Nansen Legacy (Nansen Legacy)
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Abstract:
This dataset is a collection of the acid-corrected chlorophyll A and phaeopigments measurements taken as part of the Nansen Legacy project (www.arvenetternansen.com). The data is from a single depth profile from station P1 taken on 2019-12-12 at 31.219021916666698°E and 75.9996045666667°N. Samples were collected from different depths of the water column.Access: unrestrictedNansen Legacy (Nansen Legacy)
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Abstract:
This dataset is a collection of the acid-corrected chlorophyll A and phaeopigments measurements taken as part of the Nansen Legacy project (www.arvenetternansen.com). The data is from a single depth profile from station P2 taken on 2019-12-10 at 34.0050577166667°E and 77.4996566666667°N. Samples were collected from different depths of the water column.Access: unrestrictedNansen Legacy (Nansen Legacy)
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Abstract:
This dataset is a collection of the acid-corrected chlorophyll A and phaeopigments measurements taken as part of the Nansen Legacy project (www.arvenetternansen.com). The data is from a single depth profile from station P3 taken on 2019-12-09 at 33.9942176666667°E and 78.7495365833333°N. Samples were collected from different depths of the water column.Access: unrestrictedNansen Legacy (Nansen Legacy)
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Abstract:
This dataset is a collection of the acid-corrected chlorophyll A and phaeopigments measurements taken as part of the Nansen Legacy project (www.arvenetternansen.com). The data is from a single depth profile from station P4 taken on 2019-12-08 at 34.00949179999999°E and 79.7326178833333°N. Samples were collected from different depths of the water column.Access: unrestrictedNansen Legacy (Nansen Legacy)
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Abstract:
This dataset is a collection of the acid-corrected chlorophyll A and phaeopigments measurements taken as part of the Nansen Legacy project (www.arvenetternansen.com). The data is from a single depth profile from station P5 taken on 2019-12-06 at 34.317695766666695°E and 80.53327355°N. Samples were collected from different depths of the water column.Access: unrestrictedNansen Legacy (Nansen Legacy)
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Abstract:
This dataset is a collection of the acid-corrected chlorophyll A and phaeopigments measurements taken as part of the Nansen Legacy project (www.arvenetternansen.com). The data is from a single depth profile from station P6 taken on 2019-12-05 at 30.839921966666697°E and 81.54587070000001°N. Samples were collected from different depths of the water column.Access: unrestrictedNansen Legacy (Nansen Legacy)
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Abstract:
This dataset is a collection of the acid-corrected chlorophyll A and phaeopigments measurements taken as part of the Nansen Legacy project (www.arvenetternansen.com). The data is from a single depth profile from station DEEP-ICE taken on 2019-12-03 at 28.497254983333303°E and 82.0697972333333°N. Samples were collected from different depths of the water column.Access: unrestrictedNansen Legacy (Nansen Legacy)
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Abstract:
The cruise 2019711 aboard the Research Vessel Kronprins Haakon is the seasonal cruise Q4 of the project the Nansen LEGACY. LEGACY is the Norwegian Arctic research community’s joint effort to establish a holistic understanding of a changing marine Arctic climate and ecosystem.
Water column temperature and salinity profiles were obtained with a conductivity-temperature-depth (CTD) sensor system Sea-Bird SBE 911+ mounted on a General Oceanic rosette sampler equipped with 24-Niskin bottles used for seawater sampling of chemical variables in the water column. Samples for determination of dissolved inorganic nutrients were collected from full water column at a total of 17 stations in the northern Barents Sea. The seawater samples were collected from Niskin bottles in 20 ml plastic HDPE vials (rinsed three times) and preserved with 250 µL chloroform and stored +4C and dark until post-cruise analysis of nitrite, NO2, nitrate, NO3-, phosphate, PO43-, and silicate, Si(OH)4, following standard methods (Grasshoff et al., 2009) at the chemical laboratory at Institute of Marine Research, Bergen, Norway. Three replicates were analyzed for each sample. The detection limits are 0.06 µmol/L, 0.5 µmol/L, 0.06 µmol/L and 0.7 µmol/L for NO2, NO3-, PO43-, and Si(OH)4, respectively. The study was funded by the Research Council of Norway through the project The Nansen LEGACY (RCN #276730).Access: unrestrictedNansen Legacy (Nansen Legacy)
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Abstract:
This dataset is a collection of the acid-corrected chlorophyll A and phaeopigments measurements taken as part of the Nansen Legacy project (www.arvenetternansen.com). The data is from a single depth profile from station SICE4 taken on 2019-08-24 at 24.9952°E and 81.9957°N. Samples were collected from different depths of the water column.Access: unrestrictedNansen Legacy (Nansen Legacy)
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Abstract:
This dataset is a collection of the acid-corrected chlorophyll A and phaeopigments measurements taken as part of the Nansen Legacy project (www.arvenetternansen.com). The data is from a single depth profile from station P7 taken on 2019-08-20 at 29.1396°E and 81.9262°N. Samples were collected from different depths of the water column.Access: unrestrictedNansen Legacy (Nansen Legacy)
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Abstract:
This dataset is a collection of the acid-corrected chlorophyll A and phaeopigments measurements taken as part of the Nansen Legacy project (www.arvenetternansen.com). The data is from a single depth profile from station P6 taken on 2019-08-18 at 31.1605°E and 81.5495°N. Samples were collected from different depths of the water column.Access: unrestrictedNansen Legacy (Nansen Legacy)
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Abstract:
This dataset is a collection of the acid-corrected chlorophyll A and phaeopigments measurements taken as part of the Nansen Legacy project (www.arvenetternansen.com). The data is from a single depth profile from station P6_Ice taken on 2019-08-17 at 30.9684°E and 81.5327°N. Samples were collected from different depths of the water column.Access: unrestrictedNansen Legacy (Nansen Legacy)
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Abstract:
This dataset is a collection of the acid-corrected chlorophyll A and phaeopigments measurements taken as part of the Nansen Legacy project (www.arvenetternansen.com). The data is from a single depth profile from station P5 taken on 2019-08-16 at 33.9602°E and 80.5289°N. Samples were collected from different depths of the water column.Access: unrestricted
