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OMG Level 2 Airborne eXpendable Bathy Thermograph (AXBT) Profiles

Published by NASA/JPL/OMG;NASA/JPL/PODAAC | National Aeronautics and Space Administration | Catalog Last Checked: June 30, 2026 at 09:23 PM | Dataset Last Updated: June 23, 2026
This dataset contains Level 2 in situ temperature profile measurements from the Airborne eXpendable BathyThermograph (AXBT) probes. It provides science quality temperature measurements as a function of depth in the water column. The AXBTs were jettisoned from a plane to collect temperature readings around Greenland, where a ship would have had difficulties maneuvering. After landing in the water, the AXBTs drop a weighted sensor from the surface that falls at a well-calibrated rate, measuring water temperature as it falls. An equation is used to determine the depth of the measurements as the probe falls. The AXBTs are part of the Oceans Melting Greenland (OMG) mission. In the fall of 2020 and 2021, the AXBT probes were used to supplement the ocean-per-year survey of ocean properties on the continental shelf surrounding Greenland. The goal of the mission is to find out what contributions the ocean has on Greenland's melting glaciers.

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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 Level 2 in situ temperature profile measurements from the Airborne eXpendable BathyThermograph (AXBT) probes. It provides science quality temperature measurements as a function of depth in the water column. The AXBTs were jettisoned from a plane to collect temperature readings around Greenland, where a ship would have had difficulties maneuvering. After landing in the water, the AXBTs drop a weighted sensor from the surface that falls at a well-calibrated rate, measuring water temperature as it falls. An equation is used to determine the depth of the measurements as the probe falls. The AXBTs are part of the Oceans Melting Greenland (OMG) mission. In the fall of 2020 and 2021, the AXBT probes were used to supplement the ocean-per-year survey of ocean properties on the continental shelf surrounding Greenland. The goal of the mission is to find out what contributions the ocean has on Greenland's melting glaciers.
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identifier 10.5067/OMGEV-AXBT1
keyword 
[
  "earth-science-bathymetry-seafloor-topography-oceans-water-depth",
  "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/OMG;NASA/JPL/PODAAC",
  "@type": "org:Organization"
}
spatial 
"["CARTESIAN", [{"WestBoundingCoordinate": 73.6, "SouthBoundingCoordinate": 59.1, "EastBoundingCoordinate": 180, "NorthBoundingCoordinate": 83.6}, {"WestBoundingCoordinate": -180, "SouthBoundingCoordinate": 59.1, "EastBoundingCoordinate": -6.9, "NorthBoundingCoordinate": 83.6}]]"
temporal 2020-09-02/2021-09-16
theme 
[
  "Earth Science"
]
title OMG Level 2 Airborne eXpendable Bathy Thermograph (AXBT) Profiles

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