This website uses cookies. By continuing to use this website you are agreeing to our use of cookies. 

Dataset

 

ESA Antarctic Ice Sheet Climate Change Initiative (Antarctic_Ice_Sheet_cci): Antarctic Ice Sheet monthly velocity from 2017 to 2020, derived from Sentinel-1, v1

Latest Data Update: 2021-06-16
Status: Completed
Online Status: ONLINE
Publication State: Citable
Publication Date: 2021-06-17
DOI Publication Date: 2021-06-28
Download Stats: last 12 months
Dataset Size: 44 Files | 94GB

Abstract

This dataset contains monthly gridded ice velocity maps of the Antarctic Ice Sheet derived from Sentin
el-1 data acquired between 2017-01-01 and 2020-08-31. It was generated by ENVEO, as part of the ESA Antarctic Ice Sheet Climate Change Initiative project (Antarctic_Ice_Sheet_cci).

The surface velocity is derived by applying feature tracking techniques using Sentinel-1 synthetic aperture radar (SAR) data acquired in the Interferometric Wide (IW) swath mode. Ice velocity is provided at 200m grid spacing in Polar Stereographic projection (EPSG: 3031). The horizontal velocity components are provided in true meters per day, towards easting and northing direction of the grid. The vertical displacement is derived from a digital elevation model. Provided is a NetCDF file with the velocity components: vx, vy, vz, along with maps showing the magnitude of the horizontal components, the valid pixel count and uncertainty. The product combines all ice velocity maps, based on 6- and 12-day repeats, acquired within a single month in a monthly averaged product.

Citable as:  ENVEO; Wuite, J.; Hetzenecker, M.; Nagler, T.; Scheiblauer, S. (2021): ESA Antarctic Ice Sheet Climate Change Initiative (Antarctic_Ice_Sheet_cci): Antarctic Ice Sheet monthly velocity from 2017 to 2020, derived from Sentinel-1, v1. NERC EDS Centre for Environmental Data Analysis, 28 June 2021. doi:10.5285/00fe090efc58446e8980992a617f632f. https://dx.doi.org/10.5285/00fe090efc58446e8980992a617f632f
Abbreviation: Not defined
Keywords: Antarctic, Ice Sheet Velocity, ESA, CCI

Details

Previous Info:
No news update for this record
Previously used record identifiers:
No related previous identifiers.
Access rules:
Public data: access to these data is available to both registered and non-registered users.
Use of these data is covered by the following licence(s):
https://artefacts.ceda.ac.uk/licences/specific_licences/esacci_icesheets_antarctic_terms_and_conditions.pdf
When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.
Data lineage:

Data were processed by ENVEO as part of the ESA Antarctic Ice sheet CCI project and are archived on the ENVEO Cryoportal (http://cryoportal.enveo.at). They have been supplied to CEDA in the context of the ESA CCI Open Data Portal Project

Data Quality:
Data are as given by the data provider. For more information see the Antarctic Ice Sheets CCI project documentation
File Format:
Data are in NetCDF format

Citations: 1

The following citations have been automatically harvested from external sources associated with this resource where DOI tracking is possible. As such some citations may be missing from this list whilst others may not be accurate. Please contact the helpdesk to raise any issues to help refine these citation trackings.

Picton, H.J., Stokes, C.R., Jamieson, S.S.R., Floricioiu, D. & Krieger, L. (2023) Extensive and anomalous grounding line retreat at Vanderford Glacier, Vincennes Bay, Wilkes Land, East Antarctica. The Cryosphere 17, 3593–3616. https://doi.org/10.5194/tc-17-3593-2023 https://doi.org/10.5194/tc-17-3593-2023

Process overview

This dataset was generated by a combination of instruments deployed on platforms and computations as detailed below.

Computation Element: 1

Title Derivation of the Antarctic Ice Sheet CCI Ice Velocity v1 dataset from Sentinel-1
Abstract The surface velocity is derived by applying feature tracking techniques using Sentinel-1 synthetic aperture radar (SAR) data acquired in the Interferometric Wide (IW) swath mode. Ice velocity is provided at 200m grid spacing in Polar Stereographic projection (EPSG: 3031). The horizontal velocity components are provided in true meters per day, towards easting and northing direction of the grid. The vertical displacement is derived from a digital elevation model. Provided is a NetCDF file with the velocity components: vx, vy, vz, along with maps showing the magnitude of the horizontal components, the valid pixel count and uncertainty. The product combines all ice velocity maps, based on 6- and 12-day repeats, acquired within a single month in a monthly averaged product.
Input Description None
Output Description None
Software Reference None
Output Description

None

  • var_id: crs
  • units: m/day
  • var_id: land_ice_surface_easting_stddev
  • units: m/day
  • var_id: land_ice_surface_easting_velocity
  • units: m/day
  • var_id: land_ice_surface_measurement_count
  • units: m/day
  • var_id: land_ice_surface_northing_stddev
  • units: m/day
  • var_id: land_ice_surface_northing_velocity
  • units: m/day
  • var_id: land_ice_surface_velocity_magnitude
  • units: m/day
  • var_id: land_ice_surface_vertical_velocity
  • units: m
  • var_id: x
  • standard_name: projection_x_coordinate
  • long_name: x coordinate of projection
  • units: m
  • var_id: y
  • standard_name: projection_y_coordinate
  • long_name: y coordinate of projection

Co-ordinate Variables

  • long_name: time
  • standard_name: time
  • var_id: time
  • units: hours
Coverage
Temporal Range
Start time:
2017-01-01T00:00:00
End time:
2020-08-31T23:59:59
Geographic Extent

 
-56.0000°
 
-180.0000°
 
180.0000°
 
-90.0000°