N: 73.3 S: 66 E: -144.8 W: -168.1
Description
The Salinity and Stratification at the Sea Ice Edge (SASSIE) project is a NASA experiment that aims to understand how salinity anomalies in the upper ocean generated by melting sea ice affect sea surface temperature (SST), stratification, and subsequent sea-ice growth. SASSIE involved a field campaign that sampled the transition from summer melt to autumn ice advance in the Beaufort Sea during August-October 2022, making intensive in situ and remote sensing observations within ~200km of the sea ice edge. This dataset contains delta-18O measurements from sea water and ice. Delta-18O is the ratio of stable isotopes oxygen-18 (18O) and oxygen-16. Water samples were collected from either a GoFlo bottle lowered from the side of the ship, or the outflow of the Salinity Snake. Ice samples (dimension ice_obs) were collected during two ice stations where augur tailings were collected and melted. Data are available in netCDF format.
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Variables
The table below lists the variables contained within a single granule for this dataset. Variables often contain observed or derived geophysical measurements collected from a variety of sources, including remote sensing instruments on satellite and airborne platforms, field campaigns, in situ measurements, and model outputs. The terms variable, parameter, scientific data set, layer, and band have been used across NASA’s Earth science disciplines; however, variable is the designated nomenclature in NASA’s Common Metadata Repository (CMR). Variable metadata attributes such as Name, Description, Units, Data Type, Fill Value, Valid Range, and Scale Factor allow users to efficiently process and analyze the data. The full range of attributes may not be applicable to all variables. Additional information on variable attributes is typically available in the data, user guide, and/or other product documentation.
For questions on a specific variable, please use the Earthdata Forum.
| Name Sort descending | Description | Units | Data Type | Fill Value | Valid Range | Scale Factor |
|---|---|---|---|---|---|---|
| d18O | uncertainty is ±0.05 | 1e-3 | double | -9999 | -8 to 0.8 | 1 |
| d18O_ice | uncertainty is ±0.05 | 1e-3 | double | -9999 | -8 to 0.8 | 1 |
| depth | uncertainty is 100% | m | double | N/A | N/A | 1 |
| depth_ice | depth represents half of the estimated local sea ice thickness of the ice sample | m | double | N/A | N/A | 1 |
| latitude | latitude | degree_north | double | N/A | N/A | 1 |
| latitude_ice | latitude | degree_north | double | N/A | N/A | 1 |
| longitude | longitude | degree_east | double | N/A | N/A | 1 |
| longitude_ice | longitude | degree_east | double | N/A | N/A | 1 |
| temperature | sea_water_temperature | degree_C | double | -9999 | -2 to 30 | 1 |
| temperature_ice | temperature of ice samples was not measured | degree_C | double | -9999 | -2 to 30 | 1 |
| time | time | Days since 1950-01-01 | double | N/A | N/A | 1 |
| time_ice | time | Days since 1950-01-01 | double | N/A | N/A | 1 |