N: 73.55 S: 69 E: -144.8 W: -166
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 shipboard meteorology and air-sea flux measurements. 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 | Offset |
|---|---|---|---|---|---|---|---|
| air_pressure_setra | surface air pressure from SETRA | Pa | float | -9999 | 600 to 1100 | 1 | N/A |
| air_temperature_merged | air temperature product informed from LICOR Li-7500, Metek Sonic Temperature, and Vaisala HMP | degrees C | float | -9999 | -25 to 50 | 1 | N/A |
| bulk_buoyancy_flux | atmospheric buoyancy flux estimated using COARE3.5 | W m-2 | float | -9999 | -100 to 100 | 1 | N/A |
| bulk_drag_coeff | wind stress transfer (drag) coefficient | 1 | float | -9999 | 0 to 0.0065 | 1 | N/A |
| bulk_heatflux | Both relative humidty sensors failed, uses constant RH = 89 | W m-2 | float | -9999 | -1000 to 1000 | 1 | N/A |
| bulk_heatflux_high | Both relative humidty sensors failed, uses constant RH = 70 | W m-2 | float | -9999 | -1000 to 1000 | 1 | N/A |
| bulk_heatflux_low | Both relative humidty sensors failed, uses constant RH = 100 | W m-2 | float | -9999 | -1000 to 1000 | 1 | N/A |
| bulk_latent_heat_flux | Both relative humidty sensors failed, uses constant RH = 89 | W m-2 | float | -9999 | -1000 to 1000 | 1 | N/A |
| bulk_latent_heat_flux_high | Both relative humidty sensors failed, uses constant RH = 70 | W m-2 | float | -9999 | -1000 to 1000 | 1 | N/A |
| bulk_latent_heat_flux_low | Both relative humidty sensors failed, uses constant RH = 100 | W m-2 | float | -9999 | -1000 to 1000 | 1 | N/A |
| bulk_ocean_temp | sea surface temperature | degree_C | float | -9999 | -2 to 30 | 1 | N/A |
| bulk_sensible_heat_flux | sensible heat flux into ocean estimated using COARE3.5 | W m-2 | float | -9999 | -1000 to 1000 | 1 | N/A |
| bulk_U10 | wind speed adjusted to 10 m | m s-1 | float | -9999 | 0 to 50 | 1 | N/A |
| bulk_U10_neutral | neutral value of wind speed at 10m | m s-1 | float | -9999 | 0 to 50 | 1 | N/A |
| bulk_upwelling_IR | estimated net longwave radiation from the SST, measured downwards IR, and assumed ocean albedo | W m-2 | float | -9999 | -1000 to 1000 | 1 | N/A |
| bulk_ustar | defined as u_star = sqrt( tau / rho) | m s-1 | float | -9999 | 0 to 2.5 | 1 | N/A |
| bulk_wind_stress | wind stress estimated using COARE3.5 | N m-2 | float | -9999 | 0 to 0.5 | 1 | N/A |
| downwelling_longwave | 20-minutes mean measured by the upwards longwave radiometer. This is not a net flux, because it does not include the upwelling flux | W m-2 | float | -9999 | -1000 to 1000 | 1 | N/A |
| latitude | latitude | degrees_north | float | N/A | N/A | 1 | N/A |
| longitude | longitude | degrees_east | float | N/A | N/A | 1 | N/A |
| shortwave_radiation | 20-minutes mean measured by the upwards shortwave radiometer | W m-2 | float | -9999 | -1000 to 1000 | 1 | N/A |
| time | time | days since 1950-01-01 00:00:00 | double | N/A | N/A | 1 | N/A |
| uw_bar_gill | direct covariance stress | m2 s-2 | float | -9999 | -0.5 to 0.5 | 1 | N/A |
| wdir_average | Measured clockwise from north | degrees | float | -9999 | 0 to 360 | 1 | N/A |
| wdir_rel_gill | Gill partial data loss when frozen but motion correction worked well on Gill | degree | float | -9999 | -180 to 180 | 1 | N/A |
| wdir_rel_metek | Motion pack + GPS failed on Metek; Metek was heated | degree | float | -9999 | -180 to 180 | 1 | N/A |
| wdir_true_gill | Measured clockwise from north. Gill partial data loss when frozen but motion correction worked well on Gill | degrees | float | -9999 | 0 to 360 | 1 | N/A |
| wdir_true_metek | Measured clockwise from north. Motion pack + GPS failed on Metek; Metek was heated | degrees | float | -9999 | 0 to 360 | 1 | N/A |
| wspd_average | true wind speed averaged between Gill and Metek anemometers | m s-1 | float | -9999 | 0 to 50 | 1 | N/A |
| wspd_rel_gill | Gill partial data loss when frozen but motion correction worked well on Gill | m s-1 | float | -9999 | 0 to 50 | 1 | N/A |
| wspd_rel_metek | Motion pack + GPS failed on Metek; Metek was heated | m s-1 | float | -9999 | 0 to 60 | 1 | N/A |
| wspd_true_gill | Gill partial data loss when frozen but motion correction worked well on Gill | m s-1 | float | -9999 | 0 to 50 | 1 | N/A |
| wspd_true_metek | Motion pack + GPS failed on Metek; Metek was heated | m s-1 | float | -9999 | 0 to 60 | 1 | N/A |