Snow height on sea ice and sea ice drift from autonomous measurements from buoy 2022S119, deployed during the Endurance22 expedition in 2022
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| Format: | Dataset Open Access |
| Langue: | en |
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PANGAEA
2024
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| _version_ | 1867171041600602112 |
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| author | Arndt, Stefanie Nicolaus, Marcel |
| author_facet | Arndt, Stefanie Nicolaus, Marcel |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Snow height was measured by the Snow Buoy 2022S119, an autonomous platform, drifting on Antarctic sea ice, deployed during the expedition Endurance22 with S. A. Agulhas II in 2022. The resulting time series describes the evolution of snow height as a function of place and time between 16 Feb 2022 and 22 Sep 2022 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). |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_964928 |
| institution | PANGAEA |
| language | en |
| publishDate | 2024 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Snow height on sea ice and sea ice drift from autonomous measurements from buoy 2022S119, deployed during the Endurance22 expedition in 2022 Arndt, Stefanie Nicolaus, Marcel 2022S119, WMO-ID 7101597; AGULII202202; AGULII202202_buoy; autonomous platform; AWI_SeaIce; buoy; BUOY_SNOW; Current sea ice maps for Arctic and Antarctic; DATE/TIME; drift; Global positioning system, time since last fix; International Program for Antarctic Buoys; IPAB; LATITUDE; LONGITUDE; meereisportal.de; Pressure, atmospheric; Quality flag, air temperature; Quality flag, atmospheric pressure; Quality flag, position; Quality flag, snow height; Quality flag, technical temperature; S. A. Agulhas II; Sea ice; Sea Ice Physics @ AWI; Snow buoy; snow depth; Snow height; Temperature, air; Temperature, technical; Weddel Sea Expedition Snow height was measured by the Snow Buoy 2022S119, an autonomous platform, drifting on Antarctic sea ice, deployed during the expedition Endurance22 with S. A. Agulhas II in 2022. The resulting time series describes the evolution of snow height as a function of place and time between 16 Feb 2022 and 22 Sep 2022 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). |
| title | Snow height on sea ice and sea ice drift from autonomous measurements from buoy 2022S119, deployed during the Endurance22 expedition in 2022 |
| topic | 2022S119, WMO-ID 7101597; AGULII202202; AGULII202202_buoy; autonomous platform; AWI_SeaIce; buoy; BUOY_SNOW; Current sea ice maps for Arctic and Antarctic; DATE/TIME; drift; Global positioning system, time since last fix; International Program for Antarctic Buoys; IPAB; LATITUDE; LONGITUDE; meereisportal.de; Pressure, atmospheric; Quality flag, air temperature; Quality flag, atmospheric pressure; Quality flag, position; Quality flag, snow height; Quality flag, technical temperature; S. A. Agulhas II; Sea ice; Sea Ice Physics @ AWI; Snow buoy; snow depth; Snow height; Temperature, air; Temperature, technical; Weddel Sea Expedition |
| url | https://doi.org/10.1594/PANGAEA.964928 |