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Details of IAOOS winter hydrographic data during N-ICE 2015 North of Svalbard

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Dataset identification

Title of datasetIAOOS winter hydrographic data during N-ICE 2015 North of Svalbard
Narrative summary of datasetWe gathered ocean profiles during the first two floes of the N-ICE2015 ice camp north of Svalbard with IAOOS ocean profilers. Between January and March 2015, four ocean profilers were deployed: two below a full IAOOS platform (500 m long cable) during floe 1, two on an 800 m long instrumented line in a tent-covered testing-hole during floe1 and floe 2. The ocean profilers, from French manufacturer NKE (PROVOR SPI), carried a Seabird SBE41CP CTD (Conductivity, Temperature, Depth) with an Aanderaa 4330 optode for dissolved oxygen (DO). The profilers were set to perform two profiles a day from 500 m upward (800 m from testing hole) starting at 6 am and 6 pm. They provided the first winter data in the region with a total of 138 profiles during floe 1 (January 15- February 21) with 62, 50, and 26 profiles for IAOOS7, IAOOS8, and IAOOS 9, respectively and 16 profiles during floe 2 (February 24 - March 19- IAOOS 11 from testing hole). Following quality control, we retain all the temperature profiles and remove 1% of the salinity profiles. Finally, the accuracy is estimated to be 0.002°C in temperature, and 0.02 g/kg in salinity. Several profiles are missing or incomplete because of high drift speeds (> 0.4 m s-1) impeding the ascent of the profiler. There are no bottle DO measurements during Floe 1 to calibrate the DO data. DO accuracy is estimated comparing the deep values of DO concentration (rather stable at 500m) between the three profilers. A difference of 3 µmol L-1 is observed between IAOOS 8 and 9, and IAOOS 7. An offset of 3 µmol L-1 is then applied to the oxygen data from IAOOS7 and the accuracy of the data is estimated to be at ±3 µmol L-1. The vertical resolution of the processed CTD data is 1 dbar in the upper 400 dbars, 5 dbars from 400 to 550 dbars and 10 dbars from 550 to 850 dbars. The vertical resolution in dissolved oxygen is 2 dbars over all depths. Important Note: This submission has been initially submitted to SEA scieNtific Open data Edition (SEANOE) publication service and received the recorded DOI. The metadata elements have been further processed (refined) in EMODnet Ingestion Service in order to conform with the Data Submission Service specifications.
Summary of processing methodologyFollowing quality control, we retain all the temperature profiles and remove 1% of the salinity profiles. Finally, the accuracy is estimated to be 0.002°C in temperature, and 0.02 g/kg in salinity. Several profiles are missing or incomplete because of high drift speeds (> 0.4 m s-1) impeding the ascent of the profiler. The vertical resolution of the processed CTD data is 1 dbar in the upper 400 dbars, 5 dbars from 400 to 550 dbars and 10 dbars from 550 to 850 dbars. The vertical resolution in dissolved oxygen is 2 dbars over all depths.
Start date2015-01-22
End date2015-03-17
Frequency of observationshour to sub-day

Responsible organisations

CountryFrance
Organisation nameIFREMER, SISMER, Scientific Information Systems for the SEA
Role of organisationDataset Holding Organisation
CountryFrance
Organisation nameSEANOE (SEA scieNtific Open data Edition) (SEANOE)
Role of organisationPublisher

Dataset availability

Original dataset download linkhttps://cloud.emodnet-ingestion.eu/index.php/s/shE30eW9Ly3hxNa
Date of original dataset publication2020-12-13
Dataset formatNetwork Common Data Form
Public accessNo limitations
License for useCC-BY 4.0
TypeDataset
DOIhttps://doi.org/10.17882/59516

Locations

Map
Latitude north boundary84
Longitude east boundary25
Latitude south boundary81
Longitude west boundary16
Sea areaArctic Ocean
Greenland Sea
Vertical extent minimum3 Metres
Vertical extent maximum864 Metres

Data types, collection and processing

Observation typeDissolved gases
Water column temperature and salinity
ParameterDissolved oxygen parameters in the water column
Salinity of the water column
Temperature of the water column
Instrument typeCTD
Instrument nameSea-Bird SBE 41CP CTD
Instrument typedissolved gas sensors
Instrument nameAanderaa 4330 oxygen optode
Platform typeland/onshore structure
Platform nameIAOOS 007
Platform typeland/onshore structure
Platform nameIAOOS 008
Platform typeland/onshore structure
Platform nameIAOOS 009
Platform typeland/onshore structure
Platform nameIAOSS 011
Data quality processing informationProcessed data

Process information

Submitting organisationLaboratory of Oceanography and Climate: Experiments and numerical Approaches, UMR 7159
Submission identifier (UUID)a53ad03f-3539-5393-3935-000000059516
Date of dataset creation2019-03-05
Date of dataset revision2019-11-12
Date of metadata creation2020-3-22
Date of metadata latest revision2020-11-26
Date of publishing2020-12-14
Processing data centreIFREMER, SISMER, Scientific Information Systems for the SEA
Summary record-ID724