OMG Airborne eXpendable Conductivity Temperature Depth (AXCTD) Profiles
(OMG_L2_AXCTD)| Version | 1 |
| Processing Level | 2 |
| Start/Stop Date | 2016-Sep-13 to 2021-Dec-31 |
| Short Name | OMG_L2_AXCTD |
| Description | 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. |
| DOI | 10.5067/OMGEV-AXCT1 |
| Measurement | OCEANS > SALINITY/DENSITY > DENSITY OCEANS > OCEAN TEMPERATURE > TEMPERATURE PROFILES OCEANS > SALINITY/DENSITY > SALINITY OCEANS > SALINITY/DENSITY > CONDUCTIVITY |
| Swath Width | 0.01 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. |
| Project | Oceans Melting Greenland (OMG) |
| Data Provider | Publisher: NASA/JPL/OMG Creator: OMG Release Place: NASA/JPL/PODAAC Release Date: 2019-Jul-31 |
| Format | netCDF-4 |
| Keyword(s) | OMG, CTD, Greenland |
Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov
Coverage Region: 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-Dec-31 Granule Time Span: 2016-Sep-13 to 2021-Sep-16Swath Width: 0.01 km |
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| Available for access in-region with AWS Cloud | |
Region | |
| us-west-2 | |
| podaac-ops-cumulus-protected/OMG_L2_AXCTD/ | |
| podaac-ops-cumulus-public/OMG_L2_AXCTD/ | |
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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
For more information see Data Citations and Acknowledgments.
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| 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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