OMG Airborne eXpendable Conductivity Temperature Depth (AXCTD) Profiles

(OMG_L2_AXCTD)
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DOI10.5067/OMGEV-AXCT1
Short NameOMG_L2_AXCTD
DescriptionThis 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.
Version1
Dataset TypeCOMPLETE
MeasurementOCEANS > SALINITY/DENSITY > DENSITY
OCEANS > OCEAN TEMPERATURE > TEMPERATURE PROFILES
OCEANS > SALINITY/DENSITY > SALINITY
OCEANS > SALINITY/DENSITY > CONDUCTIVITY
Processing Level2
CoverageRegion: NORTH AMERICA
Region: NORTH AMERICA
North Bounding Coordinate: 83.6 degrees
South Bounding Coordinate: 59.1 degrees
West Bounding Coordinate: 73.6 degrees
East Bounding Coordinate: 180 degrees
Time Span: 2016-Sep-13 to 2021-Sep-16
Granule Time Span: 2016-Sep-13 to 2021-Sep-16
ResolutionSpatial Resolution:
Swath Width0.01 km
Platform/Sensor
Aircraft
Platform
Name: Aircraft (Aircraft)
Orbit Period: 0.0 minutes
Inclination Angle: 90.0 degrees
/
AXCTD
SENSOR
Name: Airborne eXpendable Conductivity Temperature Depth (AXCTD)
Swath Width: 0.01 kilometers
Description: Spacecraft angular distance from orbital plane relative to the Equator.

ProjectOceans Melting Greenland (OMG)
Data ProviderPublisher: NASA/JPL/OMG
Creator: OMG
Release Place: NASA/JPL/PODAAC
Release Date: 2019-Jul-31

Keyword(s)OMG, CTD, Greenland
Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov
DIRECT ACCESS
PO.DAAC DRIVEhttps://podaac-tools.jpl.nasa.gov/drive/files/allData/omg/L2/CTD/AXCTD
PO.DAAC Drive
OPENDAP DATAhttps://podaac-opendap.jpl.nasa.gov/opendap/allData/omg/L2/CTD/AXCTD/
The OPeNDAP base directory location for the collection.
FormatNETCDF
READ SOFTWARE
Citation is critically important for dataset documentation and discovery. Please cite the data as follows, and cite the reference papers when it is appropriate.
Citation OMG. 2019. OMG AXCTD Profiles. Ver. 1. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/OMGEV-AXCT1

Download Citation
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For more information see Data Citations and Acknowledgments.

Journal Reference Fenty, I., J.K. Willis, A. Khazendar, S. Dinardo, R. Forsberg, I. Fukumori, D. Holland, M. Jakobsson, D. Moller, J. Morison, A. Meunchow, E. Rignot, M. Schodlock, A.F. Thompson, K. Tino, M. Rutherford, and N. Trenholm. 2016. Oceans Melting Greenland: Early results from NASA's ocean-ice mission in Greenland. Oceanography 29(4):72-83, https://doi.org/10.5670/ocean.2016.100

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