OMG Level 2 Airborne eXpendable Bathy Thermograph (AXBT) Profiles
(OMG_L2_AXBT)| Version | 1 |
| Processing Level | 2 |
| Start/Stop Date | 2020-Sep-02 to 2021-Sep-16 |
| Short Name | OMG_L2_AXBT |
| 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. |
| DOI | 10.5067/OMGEV-AXBT1 |
| Measurement | OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE OCEANS > SALINITY/DENSITY > CONDUCTIVITY OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > WATER DEPTH OCEANS > SALINITY/DENSITY > SALINITY |
| Swath Width | 0.1 km |
| Platform/Sensor | Aircraft / Platform Name: Aircraft (Aircraft) Orbit Period: 0.0 minutes Inclination Angle: 90.0 degrees BATHYTHERMOGRAPHS SENSOR Name: BATHYTHERMOGRAPHS (BATHYTHERMOGRAPHS) Swath Width: 0.1 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: 2021-Oct-31 |
| Format | netCDF-4 |
| Keyword(s) | OMG, BT, Greenland, bathythermograph |
Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov
Coverage Region: NORTH AMERICA Region: NORTH AMERICA Spatial Coverage North: 83.6 degrees South: 59.1 degrees West: 73.6 degrees East: 180 degrees North: 83.6 degrees South: 59.1 degrees West: -180 degrees East: -6.9 degrees Time Span: 2020-Sep-02 to 2021-Sep-16Granule Time Span: 2020-Sep-02 to 2021-Sep-16Swath Width: 0.1 km |
| DIRECT ACCESS | |
| Browse Granule Listing | |
| Search Granules | |
| DIRECT S3-ACCESS | |
| Available for access in-region with AWS Cloud | |
Region | |
| us-west-2 | |
| podaac-ops-cumulus-protected/OMG_L2_AXBT/ | |
| podaac-ops-cumulus-public/OMG_L2_AXBT/ | |
AWS S3 Credentials | |
| Get AWS S3 Credentials | Documentation | |
| Name | Long Name | Unit |
|---|---|---|
| depth | depth | meters |
| frequency | frequency | s-1 |
| lat | latitude | degrees_north |
| lon | longitude | degrees_east |
| profile_time | time since probe began descent from ocean surface | seconds |
| sound_velocity | speed of sound in sea water | m s-1 |
| temperature | sea water temperature | degrees_C |
| time | time | seconds since 1970-01-01T00:00:00Z |
| GENERAL DOCUMENTATION | |
| USER'S GUIDE | |
| |
| DATA CITATION POLICY | |
| |
| DATA RECIPE | |
|
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. 2021. OMG Airborne eXpendable Bathy Thermograph (AXBT) Profiles Version 1. Ver. 1. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/OMGEV-AXBT1
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 . |
||||||||