MEaSUREs Multi-year Reference Velocity Maps of the Antarctic Ice Sheet, Version 1
Data set id:
NSIDC-0761
DOI: 10.5067/FB851ZIZYX5O
This is the most recent version of these data.
Version Summary
Version Summary
Initial release.
Overview
This data set, part of the NASA Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program, contains four, as-complete-as-possible 450 m resolution reference maps of ice component velocities for the Antarctic ice sheet. Maps are available for 1995 – 2001; 2007 – 2009; 2014 – 2017; and 2020 – 2022. Velocities are derived by applying phase analysis and speckle tracking to satellite synthetic aperture radar data, and by feature tracking of visible imagery obtained by the Operational Land Imager (OLI) on board Landsat-8.
Data also include velocity standard deviation and mean velocity standard error; the number of observation pairs used for each pixel; start and end dates used for each pixel; and a mask that indicates ice front and grounding line locations.
Parameter(s):
ICE VELOCITY
Platform(s):
ALOS
ENVISAT
ERS-1
ERS-2
LANDSAT-8
RADARSAT-1
RADARSAT-2
Sentinel-1A
Sentinel-1B
TDX
TSX
Sensor(s):
ASAR
C-SAR
OLI
PALSAR
SAR
X-SAR
Data Format(s):
netCDF-4
Temporal Coverage:
- 1 July 1995 to 30 June 2001
- 1 July 2007 to 30 June 2009
- 1 July 2014 to 30 June 2017
- 1 July 2020 to 30 June 2022
Temporal Resolution:
- Varies
Spatial Resolution:
- 450 m
- 450 m
Spatial Reference System(s):
- WGS 84 / Antarctic Polar StereographicEPSG:3031
Spatial Coverage:
- Northern latitude-60Southern latitude-90Eastern longitude180Western longitude-180
Blue outlined yellow areas on the map below indicate the spatial coverage for this data set.
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Documentation
Help Articles
How to Articles
This article shows how to download NSIDC DAAC data from NASA Earthdata Cloud to your computer using three tools: wget and curl—popular command-line utilities for downloading files—and Data Downloader, a Python-based command-line tool developed by the Physical Oceanography Distributed Active Archi
The NASA Earthdata Cloud is the NASA cloud-based archive of Earth observations. It is hosted by Amazon Web Services (AWS). Learn how to find and access NSIDC DAAC data directly in the cloud.
General Questions & FAQs
This article covers frequently asked questions about the NASA NSIDC DAAC's Earthdata cloud migration project and what it means to data users.