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S-MODE Level 3 Shipboard uCTD and EcoCTD Measurements 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 shipboard Underway conductivity, temperature, and depth (UCDT) measurements taken during the Sub-Mesoscale Ocean Dynamics Experiment (S-MODE) pilot campaign conducted approximately 300 km offshore of San Francisco over two weeks in October 2021. 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 Underway CTD system contains a standard UCDT probe measuring conductivity, temperature, and pressure, as well as an augmented EcoCDT probe that concurrently measures both hydrographic and bio-optical data including conductivity, temperature, pressure, dissolved oxygen concentration, chlorophyll-fluorescence, and particulate backscatter at two different wavelengths. Level 3 data are available in netCDF format with dimensions of profile number and depth.

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Complete Metadata
@type dcat:Dataset
accessLevel public
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[
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contactPoint 
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}
description This dataset contains shipboard Underway conductivity, temperature, and depth (UCDT) measurements taken during the Sub-Mesoscale Ocean Dynamics Experiment (S-MODE) pilot campaign conducted approximately 300 km offshore of San Francisco over two weeks in October 2021. 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 Underway CTD system contains a standard UCDT probe measuring conductivity, temperature, and pressure, as well as an augmented EcoCDT probe that concurrently measures both hydrographic and bio-optical data including conductivity, temperature, pressure, dissolved oxygen concentration, chlorophyll-fluorescence, and particulate backscatter at two different wavelengths. Level 3 data are available in netCDF format with dimensions of profile number and depth.
distribution 
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identifier 10.5067/SMODE-RVECT3
keyword 
[
  "earth-science-ocean-chemistry-oceans-oxygen",
  "earth-science-ocean-optics-oceans-fluorescence",
  "earth-science-ocean-optics-oceans-scattering",
  "earth-science-ocean-temperature-oceans-ocean-temperature-profiles",
  "earth-science-salinity-density-oceans",
  "earth-science-salinity-density-oceans-conductivity",
  "earth-science-salinity-density-oceans-ocean-salinity",
  "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 2021-08-01/2021-11-30
theme 
[
  "Earth Science"
]
title S-MODE Level 3 Shipboard uCTD and EcoCTD Measurements Version 1

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