Snow height on sea ice and sea ice drift from autonomous measurements from buoy 2023S126, deployed during Charcot expedition 2023

DOI

Snow height was measured by the Snow Buoy 2023S126, an autonomous platform, drifting on Arctic sea ice, deployed during expedition with Le Commandant Charcot in 2023. The resulting time series describes the evolution of snow height as a function of place and time between 16 Aug 2023 and 21 March 2024 in sample intervals of 1 hour. The Snow Buoy consists of four independent sonar measurements representing the area (approx. 10 m**2) around the buoy. The buoy was installed on first year ice. In addition to snow depth, geographic position (GPS), barometric pressure, air temperature, and an internal ice temperature were measured. Negative values of snow height occur if surface ablation continues into the sea ice. Thus, these measurements describe the position of the sea ice surface relative to the original snow-ice interface. Differences between single sensors indicate small-scale variability of the snow pack around the buoy. The data set has been processed and contains quality flags for different kinds for erroneous data. Flag values are the sum of individual error codes. The value of 0 refers to no error. Quality flag, position: The geographic position is flagged +1 if the drift velocity, as derived from the GPS longitude and latitude, exceeds a threshold of 10 deg latitude or 50 deg longitude per time step; +2 if the position exceeds extreme values, such as longitude > 360 deg; +4 if the position is exactly 0.0. Quality flag, snow: The snow height is flagged for each sensor +1 for manual corrections during processing (e.g. sensor issues); +2 if the snow accumulation exceeds 0.1 m per hour; +4 if the difference in snow height is larger than 0.03 m compared to values within the last and next 2 hours; +32 if the value exceeds the height of sensor on the platform at 1.5 m. Quality flag, temperature: The air temperature is flagged +1 for manual corrections during processing (e.g. sensor issues); + 32 if the value is below – 50 °C. Quality flag, pressure: The barometric pressure is flagged +1 for manual corrections during processing (e.g. sensor issues).

Identifier
DOI https://doi.pangaea.de/10.1594/PANGAEA.973302
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.973302
Provenance
Creator Nicolaus, Marcel ORCID logo; von Albedyll, Luisa ORCID logo
Publisher PANGAEA
Publication Year 2024
Funding Reference Horizon 2020 https://doi.org/10.13039/501100007601 Crossref Funder ID 101003472 https://doi.org/10.3030/101003472 Pan-Arctic observing System of Systems: Implementing Observations for societal Needs (Arctic PASSION)
Rights Creative Commons Attribution 4.0 International; Data access is restricted (moratorium, sensitive data, license constraints); https://creativecommons.org/licenses/by/4.0/
OpenAccess false
Representation
Resource Type Dataset
Format text/tab-separated-values
Size 83648 data points
Discipline Natural Sciences; Physics
Spatial Coverage (-13.801W, 73.221S, 128.533E, 89.985N); Central Arctic Ocean
Temporal Coverage Begin 2023-08-16T15:00:00Z
Temporal Coverage End 2024-03-21T10:04:00Z