Abstract:
Salinity profiles of sea ice and snow on sea ice were measured in the Arctic Ocean during the Norwegian Young Sea Ice cruise in 2015 (https://www.npolar.no/en/projects/n-ice2015/), an international sea ice drift expedition led by the Norwegian Polar Institute. Salinity is a key parameter for a range of processes related to biology, photochemistry and physics of sea ice, snow on sea ice as well as atmospheric aerosol. Sea ice cores and snow samples were collected during the sea ice drift expedition from the ice floe and transferred to the ship's laboratory. The aqueous conductivity of melted sea ice core and snow samples was measured and converted into practical salinity units.
Funding was provided by the NERC grant NE/M005852/1, Japan Society for the Promotion of Science (15K16135, 24-4175) and the Centre of Ice, Climate and Ecosystems (ICE) at the Norwegian Polar Institute through the N-ICE project
Keywords:
Arctic, sea ice salinity, snow salinity
Frey, M., & Nomura, D. (2019). Salinity profiles of snow on sea ice and sea ice in the Arctic Ocean during winter 2015 (Version 1.0) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/6ed9f4ea-6b89-4059-84e3-5c4118b68db9
| Use Constraints: | This data is governed by the NERC data policy http://www.nerc.ac.uk/research/sites/data/policy/ and supplied under Open Government Licence v.3 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ |
|---|
| Creation Date: | 2019-06-27 |
|---|---|
| Dataset Progress: | Complete |
| Dataset Language: | English |
| ISO Topic Categories: |
|
| Parameters: |
|
| Personnel: | |
| Name | UK PDC |
| Role(s) | Metadata Author |
| Organisation | British Antarctic Survey |
| Name | Dr Markus Frey |
| Role(s) | Technical Contact, Investigator |
| Organisation | British Antarctic Survey |
| Name | Daiki Nomura |
| Role(s) | Technical Contact, Investigator |
| Organisation | Faculty of Fisheries Sciences, Hokkaido University |
| Parent Dataset: | N/A |
| Quality: | Data set 1 (see also Frey et al., 2019): measurement range of 0-200 mS cm-1 and a maximum resolution of 0.1 μS cm-1 at low conductivities (0-199.9 μS cm-1). The conductivity meter used has an automatic non-linear temperature compensation based on a NaCl solution and reference temperature of 25 degC and was calibrated with a standard salt solution (12.880 mS cm-1 at 25.1 degC), certified and traceable to NIST (REAGECON Prod. No. CSKC12880, Lot No. CS1288012K1). Conductivity values were converted into practical salinity Sp as described in Frey et al. (2019). Accuracy as stated by the manufacturer is ±0.001 psu at low salinities (<1 psu). Data set 2 (see also Nomura et al., 2018): For calibration of salinity measurement, a Guildline PORTASAL salinometer model 8410A, standardized by International Association for the Physical Sci- ences of the Oceans (IAPSO) standard seawater (Ocean Scientific International Ltd, UK), was used. The accuracy of this sensor was ±0.003. |
|
|---|---|---|
| Lineage: | Snow on sea ice and sea ice were sampled at 0.02-0.1 m vertical resolution. Samples was melted onboard the ship to measure aqueous conductivity using conductivity meters. Sp is reported in psu (practical salinity unit), approximately equivalent to the weight of dissolved inorganic matter in grams per kilogram of seawater, and has an accuracy as stated by the manufacturer of ±0.001 psu at low salinities (<1 psu). | |
| Project: |
|
|
| Temporal Coverage: | |
|---|---|
| Start Date | 2015-03-05 |
| End Date | 2015-03-23 |
| Spatial Coverage: | |
| Latitude | |
| Southernmost | 81.446 |
| Northernmost | 83.134 |
| Longitude | |
| Westernmost | 18.405 |
| Easternmost | 24.412 |
| Altitude | |
| Min Altitude | N/A |
| Max Altitude | N/A |
| Depth | |
| Min Depth | N/A |
| Max Depth | N/A |
| Data Resolution: | |
| Latitude Resolution | N/A |
| Longitude Resolution | N/A |
| Horizontal Resolution Range | N/A |
| Vertical Resolution | 0.02 - 0.1m |
| Vertical Resolution Range | N/A |
| Temporal Resolution | N/A |
| Temporal Resolution Range | N/A |
| Location: | |
| Location | Arctic Ocean |
| Detailed Location | N/A |
| Sensor(s): |
|
|---|---|
| Data Collection: | Data set 1: conductivity meter SensIon 5, Hach; Data set 2: conductivity meter Cond 315i, WTW GmbH, Germany |