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S-MODE Lagrangian Float Observations Version 1

Published by NASA/JPL/PODAAC | National Aeronautics and Space Administration | Catalog Last Checked: June 25, 2026 at 01:58 PM | Dataset Last Updated: June 23, 2026
This dataset contains in-situ measurements of temperature, salinity, and velocity from the Sub-Mesoscale Ocean Dynamics Experiment (S-MODE) conducted approximately 300 km offshore of San Francisco, during an intensive observation period in the fall of 2022. The data are available in netCDF format with a dimension of time. S-MODE aims to understand how ocean dynamics acting on short spatial scales influence the vertical exchange of physical and biological variables in the ocean. The target in-situ quantities were measured by Lagrangian floats, which were deployed from research vessels and retrieved 3-5 days later. The floats follow the 3D motion of water parcels at depths within or just below the mixed layer and carried a CTD instrument to measure temperature, salinity, and pressure, in addition to an ADCP instrument to measure velocity.

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Complete Metadata
@type dcat:Dataset
accessLevel public
bureauCode 
[
  "026:00"
]
contactPoint 
{
  "fn": "Earthdata Forum",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:earthdata-support@nasa.gov"
}
description This dataset contains in-situ measurements of temperature, salinity, and velocity from the Sub-Mesoscale Ocean Dynamics Experiment (S-MODE) conducted approximately 300 km offshore of San Francisco, during an intensive observation period in the fall of 2022. The data are available in netCDF format with a dimension of time. S-MODE aims to understand how ocean dynamics acting on short spatial scales influence the vertical exchange of physical and biological variables in the ocean. The target in-situ quantities were measured by Lagrangian floats, which were deployed from research vessels and retrieved 3-5 days later. The floats follow the 3D motion of water parcels at depths within or just below the mixed layer and carried a CTD instrument to measure temperature, salinity, and pressure, in addition to an ADCP instrument to measure velocity.
distribution 
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identifier 10.5067/SMODE-FLOAT
keyword 
[
  "earth-science-ocean-circulation-oceans-fronts",
  "earth-science-ocean-circulation-oceans-ocean-currents",
  "earth-science-ocean-circulation-oceans-ocean-mixed-layer",
  "earth-science-ocean-pressure-oceans-water-pressure",
  "earth-science-ocean-temperature-oceans-ocean-temperature-profiles",
  "earth-science-ocean-temperature-oceans-water-temperature",
  "earth-science-salinity-density-oceans-conductivity",
  "earth-science-salinity-density-oceans-salinity"
]
license https://www.usa.gov/government-works
modified 2026-06-23
programCode 
[
  "026:000"
]
publisher 
{
  "name": "NASA/JPL/PODAAC",
  "@type": "org:Organization"
}
spatial 
"["CARTESIAN", [{"NorthBoundingCoordinate": 38.1, "WestBoundingCoordinate": -125.4, "EastBoundingCoordinate": -122.9, "SouthBoundingCoordinate": 36.3}]]"
temporal 2022-10-01/2023-05-31
theme 
[
  "Earth Science"
]
title S-MODE Lagrangian Float Observations Version 1

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