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OMG Airborne eXpendable Conductivity Temperature Depth (AXCTD) Profiles

Metadata Updated: December 7, 2023

This dataset contains in situ profile measurements from Airborne eXpendable Conductivity Temperature Depth (AXCTD) probes. It provides salinity, density, temperature and sound velocity as a function of depth in the water column. The AXCTDs were jettisoned from a plane to collect temperature and salinity readings around Greenland, where a ship would have had difficulties maneuvering. After landing in the water, the AXCTDs drop a weighted sensor from the surface that falls at a well-calibrated rate, measuring water temperature and conductivity as it falls. An equation is used to determine the depth of the measurements as the probe falls, and another equation is used to convert temperature, depth and conductivity into salinity. These probes provided measurements of the ocean's physical characteristics around Greenland, where a ship would have had difficulties maneuvering. The AXCTDs are part of the Oceans Melting Greenland (OMG) mission. The AXCTDs were deployed in the fall from 2016 through 2021, covering the entire continental shelf surrounding Greenland as part of a once-per-year survey. The goal of the mission is to find out what contributions the ocean has on Greenland's melting glaciers.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources

Dates

Metadata Created Date May 30, 2023
Metadata Updated Date December 7, 2023

Metadata Source

Harvested from NASA Data.json

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Additional Metadata

Resource Type Dataset
Metadata Created Date May 30, 2023
Metadata Updated Date December 7, 2023
Publisher NASA/JPL/PODAAC
Maintainer
Identifier C2205122616-POCLOUD
Data First Published 2019-07-01
Language en-US
Data Last Modified 2019-07-01
Category OMG, geospatial
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.nasa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Citation OMG. 2019-07-31. OMG Airborne eXpendable Conductivity Temperature Depth (AXCTD) Profiles. Version 1. OMG AXCTD Profiles. NASA/JPL/PODAAC. Archived by National Aeronautics and Space Administration, U.S. Government, NASA/JPL/OMG. https://doi.org/10.5067/OMGEV-AXCT1. OMG, NASA/JPL/OMG, 2019-07-31, OMG Airborne eXpendable Conductivity Temperature Depth (AXCTD) Profiles, .
Creator OMG
Graphic Preview Description Thumbnail
Graphic Preview File https://podaac.jpl.nasa.gov/Podaac/thumbnails/OMG_L2_AXCTD.jpg
Harvest Object Id 6513aaa8-3261-40be-8252-3109f717a60f
Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
Harvest Source Title NASA Data.json
Homepage URL https://doi.org/10.5067/OMGEV-AXCT1
Metadata Type geospatial
Old Spatial 73.6 59.1 180.0 83.6
Program Code 026:001
Release Place NASA/JPL/PODAAC
Series Name OMG Airborne eXpendable Conductivity Temperature Depth (AXCTD) Profiles
Source Datajson Identifier True
Source Hash bc73d3139457035911184dc7dab1ae061717531c4b8489429826fe6f4eafdc21
Source Schema Version 1.1
Spatial
Temporal 2016-09-13T15:26:43Z/2021-12-31T15:02:12Z

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