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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 ~200 km of the sea ice edge. This dataset contains profiles of upper ocean temperature, salinity, and density taken with a Shipboard CastAway Conductivity-Temperature-Depth instrument (CastAway-CTD). A total of 254 profiles were taken over the sampling period at various locations, typically every 30 minutes while the ship was underway, with a mean depth of 45m. Data are available in NetCDF format.

Product Summary

Platforms
Ships
Instruments
CTD
Spatial Extent

N: 73.5 S: 72 E: -145 W: -152.5

Geographic Region
BEAUFORT SEA
Coordinate System
GEODETIC
Granule Spatial Representation
CARTESIAN
Temporal Extent
2022-09-09 to 2022-09-19
Vertical Extent
Maximum Depth: 50 meters
Data Partner
Physical Oceanography Distributed Active Archive Center, Jet Propulsion Laboratory, NASA (NASA/JPL/PODAAC)
Concept ID
C2624100570-POCLOUD
Data State
COMPLETE
Number of Files/Granules
1
Processing Level
2
Science Keywords
OCEAN TEMPERATURE PROFILES ,
CONDUCTIVITY PROFILES ,
Salinity ,
OCEAN SALINITY PROFILES ,
Density

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

Jaynise Perez Valentin. (2022). SASSIE Arctic Field Campaign Shipboard Castaway CTD Data Fall 2022 [Data set]. NASA Physical Oceanography Distributed Active Archive Center. https://doi.org/10.5067/SASSIE-RVCTD2 Date Accessed: 2025-12-14

Documents

Variables

Variables are a set of physical properties whose values determine the characteristics or behavior of something. For example, temperature and pressure are variables of the atmosphere. Parameters and variables can be used interchangeably. Variable level attributes provide individual information for each variable.

The Name in this table is the variable name. Fill value indicates missing or undefined data points in a variable. Valid range is the range of values the variable can store. Scale factor is used to increase or decrease the size of an object and can be used to correct for distortion. For questions on a specific variable, please use the Earthdata Forum.

Name Description Units Data Type Fill Value Valid Range Scale Factor
density sea_water_density kg/m^3 double -9999 990 to 1035 1
depth depth m double N/A N/A 1
latitude latitude degree_north double N/A N/A 1
longitude longitude degree_east double N/A N/A 1
pressure sea_water_pressure dBar double -9999 0 to 100 1
salinity Salinity measured from Castaway instrument 1 double -9999 0 to 42 1
temperature Surface temperature variations were validated against sea-snake dataset. degree_C double -9999 -5 to 45 1
time time Days since 1950-01-01 double N/A N/A 1
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