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Nansen Legacy (Nansen Legacy)
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Abstract:
The Joint Cruise 2-1 addressed objectives of the work packages ‘Physical drivers’ (Research Foci 1), ‘Human impact’ (Research Foci 2) and ‘The living Barents Sea’ (Research Foci 3) along the Nansen Legacy transect in open water and within the sea ice. The cruise focussed on comparing the state of the physical, chemical and biological conditions in the southern and northern parts of the study area.Access: unrestrictedNansen Legacy (Nansen Legacy)
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Abstract:
The Nansen Legacy cruise Q2 (Q2: 2nd quarter of the year) was part of the seasonal investigation of the northern Barents Sea and adjacent Arctic Basin. The cruise was conducted during the spring period – a biologically critical time window when a large part of the annual primary production occurs – and focused on comparing the physical, chemical and biological conditions along the Nansen Legacy main transect in open waters and within the sea ice. The cruise addressed objectives of the work packages ‘Physical drivers’ (Research Focus 1), ‘Human impact’ (Research Focus 2), ‘The living Barents Sea’ (Research Focus 3) and ‘Technology and method development’ (Research Activity C).Access: unrestrictedNansen Legacy (Nansen Legacy)
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Abstract:
The Nansen Legacy cruise Q1 (Q1: 1st quarter of the year) was part of the seasonal investigation of the northern Barents Sea and adjacent Arctic Basin. The cruise was conducted in March 2021, and focused on comparing the physical, chemical and biological conditions along the Nansen Legacy main transect in open waters and within the sea ice. The cruise addressed objectives of the work packages ‘Physical drivers’ (Research Foci 1), ‘Human impact’ (Research Foci 2) and ‘The living Barents Sea’ (Research Foci 3).Access: unrestrictedNansen 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: unrestrictedNansen Legacy (Nansen Legacy)
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Abstract:
The cruise addressed objectives of the work package ‘Physical drivers’ (Research Focus 1), focusing on ocean mixing and water transformation process studies in the region east of Svalbard, with particular focus on the Barents Sea Polar Front region.Access: unrestrictedNansen Legacy (Nansen Legacy)
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Abstract:
The main scientific goal of the Nansen Legacy Joint Cruise 2-2 (JC2-2) was to extend the research activities from the northern Barents Sea shelf into the central Arctic Ocean. Specifically, JC2-2 addressed objectives of the work packages ‘Physical drivers’ (Research Foci 1), ‘Human impact’ (Research Foci 2) and ‘The living Barents Sea’ (Research Foci 3) by jointly collecting interdisciplinary samples and data.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.Arctic ABC Development, Deep Impact, Centre for Autonomous Marine Operations and Systems (NFR grant 245929, NFR project no 300333, NFR project no 223254)
Institutions: UiT The Arctic University of Norway, UiT The Arctic University of Norway, UiT The Arctic University of Norway, UiT The Arctic University of Norway, UiT The Arctic University of Norway, UiT The Arctic University of Norway, UiT The Arctic University of Norway, Norwegain Infrastructure for Research Data (NIRD)Show more...
Abstract:
UiT The Arctic University of Norway (UiT) and the Norwegian University of Science and Technology (NTNU) established a light observatory at Kings Bay, Ny-Ålesund (Svalbard, Norway) in January 2017. The observatory consists of an array of light sensors including an all sky camera. It is located outside the settlement of Ny-Ålesund, approximately 1 km N-NW of the airport towards Brandalspynten. The array of sensors is mounted on a tripod under a transparent dome. This dataset contains the data of the hyperspectral radiometer USSIMO (In-situ Marine Optics, Perth, WA, Australia), converted to E(PAR) by the following equation: PAR is approximated as an integral of micromolespersec=(uirr/(h*c/(lambda*1e-9)))/microavo for wavelengths(lambda) in range from 400 to 700nm, where: uirr = USSIMO irradiance for wavelength equal to lambda, h=6.63e-34 [Js], c=3.00e+08 [m/s], microavo=6.022e17. The sensor is equipped with a Zeiss MMS1 UV-VIS NIR detector with National Institute of Standards and Technology, USA traceable radiometric calibration between 380 and 900 nm. This instrument is used for time-series measurement of down-welling spectral irradiance in energy Wm-2 nm-1. Spectral resolution is 10 nm (3.3 nm pixel spacing) and a cosine-corrected polytetrafluoroethylene (PTFE) light diffusor with cosine error: <3% (0 - 60°), <10% (60 - 87.5°), is fitted. The device acquired measurements with a 16 bit analogue to digital converter. It samples continuously internally. Integration time is controlled by the sensor depending on the light intensity, with a maximum of 6 seconds. Actual integration time is stored with the data in each sample. The sensor output is saved on a PC with custom software which records 30 seconds of output data every 29:30 min. The number of samples collected in that period depends on the USSIMO integration time. The sensor is equipped with a pitch and roll sensor which is used to ensure that the spectroradiometer remains in the fixed position throughout the time-series acquisition. For re-use of the data, please refer to the dataset and the original publication. This is the 2020 dataset.License :
Access: OpenArctic ABC Development (NFR grant 245929)
Institutions: UiT The Arctic University of Norway, UiT The Arctic University of Norway, UiT The Arctic University of Norway, UiT The Arctic University of Norway, UiT The Arctic University of Norway, UiT The Arctic University of Norway, UiT The Arctic University of Norway, Norwegain Infrastructure for Research Data (NIRD)Show more...
Abstract:
UiT The Arctic University of Norway (UiT) and the Norwegian University of Science and Technology (NTNU) established a light observatory at Kings Bay, Ny-Ålesund (Svalbard, Norway) in January 2017. The observatory consists of a range of light sensors including an all sky camera. It is located outside the settlement of Ny-Ålesund, approximately 1 km N-NW of the airport towards Brandalspynten. The array of sensors, including the camera, is mounted on a tripod under a transparent dome. This dataset contains the E(PAR) data derived from pictures taken during 2017 at hourly intervals by the all-sky-camera. The camera (Canon EOS 5D Mark III) is equipped with a fish-eye lens with a focal length set to 8 mm with aperture manually set to open (f/4) to ensure maximum sensitivity (Canon EF 8-15mm f/4L), providing a 180° image of the atmosphere (only possible with a full-size sensor). Both shutter speed (exposure time, ranging from 0.000125 to 30 seconds) and ISO (sensitivity, ranging from 100 at Midnight Sun period and up to 6400 during Polar Night) are set to auto. White balance manually set to “day light”. It is remotely controlled by a PC, pictures were stored in a cloud storage. Short gaps in the time series are due to power failures. In this dataset there are two large gaps: 2018-05-16 to 2018-05-18 and 2018-08-20 to 2018-08-22 caused by a crash of the controlling PC. The equations for the picture-to-E(PAR) conversion can be found in: Johnsen et al 2021, An all-sky camera system providing high temporal resolution annual time-series of irradiance in the Arctic, Applied Optics. The pictures on which this dataset is based on can be found at . For re-use of the data, please refer to the dataset and the original publication.License :
Access: OpenNansen 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: unrestricted
