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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 ~200km of the sea ice edge. This dataset contains salinity and temperature measurements collected by a shipboard salinity snake. The salinity snake system consisted of a ship-mounted boom with a length of 10m to provide sampling of undisturbed water at a depth of 1-2cm. Salinity data are delayed by 40s, which is the average residence time in the hose, pump, and shipboard system before being analyzed. Data are available in netCDF format.

Product Summary

Platforms
Ships
Instruments
CTD
Spatial Extent

N: 73.6 S: 66 E: -144.8 W: -168.1

Geographic Region
BEAUFORT SEA
Coordinate System
GEODETIC
Granule Spatial Representation
CARTESIAN
Temporal Extent
2022-09-09 to 2022-10-03
Data Partner
Physical Oceanography Distributed Active Archive Center, Jet Propulsion Laboratory, NASA (NASA/JPL/PODAAC)
Concept ID
C2684906861-POCLOUD
Data State
COMPLETE
Number of Files/Granules
1
Processing Level
2
Science Keywords
Sea Surface Temperature ,
Ocean Surface Salinity ,
SURFACE CONDUCTIVITY

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

Schanze, J. (2022). SASSIE Arctic Field Campaign Shipboard Salinity Snake Data Fall 2022 [Data set]. NASA Physical Oceanography Distributed Active Archive Center. https://doi.org/10.5067/SASSIE-SNK2 Date Accessed: 2026-01-09

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
barometric_pressure Barometric pressure in lab van in mbar measured using BMP180 Sensor, this measurement was moved forward in time 90 seconds to account for residence time in hoses and instrument to match the time at which salinity was measured mbar double -9999 500 to 1200 1
cdom_fdom FDOM/CDOM Measured using Turner C-FLOUR RS232 CDOM probe with flow through cap, this measurement was moved forward in time 120 seconds to account for residence time in hoses and instrument 1 double -9999 0 to 99 1
flowrate_lpm Flow rate through SBE45 after debubblers as measured by Seametrics SPX-025, this measurement was moved forward in time 90 seconds to account for residence time in hoses and instrument to match the time at which salinity was measured L m-1 double -9999 0 to 20 1
instrument_pressure Instrument pressure at SBE45 output, this measurement was moved forward in time 90 seconds to account for residence time in hoses and instrument to match the time at which salinity was measured bar double -9999 -1 to 2 1
lab_temperature Laboratory Van Temperature measured using BMP180 Sensor, this measurement was moved forward in time 90 seconds to account for residence time in hoses and instrument to match the time at which salinity was measured degree_C double -9999 -10 to 40 1
latitude latitude_in_decimal_degrees degree_north double N/A N/A 1
longitude longitude_in_decimal_degrees degree_east double N/A N/A 1
pump_suction Suction at intake of peristaltic pump in bar relative to atmospheric pressure, this measurement was moved forward in time 90 seconds to account for residence time in hoses and instrument to match the time at which salinity was measured bar double -9999 -1 to 2 1
salinity Salinity measured using Seabird SBE45 thermosalinograph as PSS-78, this measurement was moved forward in time 120 seconds to account for residence time in hoses and instrument 1 double -9999 0 to 40 1
speed Platform speed as determined by Garmin 178 GPS m s-1 double -9999 0 to 15 1
temperature_insitu Temperature measured using in-situ SBE56 temperature logger located in end of hose degree_C double -9999 -2 to 40 1
temperature_sbe45 Temperature measured in SBE45 Thermosalinograph, modified by flow through pump and hoses, this measurement was moved forward in time 90 seconds to account for residence time in hoses and instrument degree_C double -9999 -2 to 40 1
time time_in_days_since_1950 Days since 1950-01-01 double N/A N/A 1
truecourse Platform course (degrees true) as measured by Garmin 178 GPS degree double -9999 0 to 360 1
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