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Dataset

 

ESA Greenland Ice Sheet Climate Change Initiative (Greenland_Ice_Sheet_cci): Ice Velocity data for the Greenland Margin from the PALSAR instrument for 2006-2011, v1.1 (June 2016 version)

Status: Completed
Online Status: ONLINE
Publication State: Published
Publication Date: 2016-11-29
Download Stats: last 12 months

Abstract

This dataset contains a time series of ice velocities for the Greenland margin from the PALSAR instrument on the ALOS satellite. It has been produced by the ESA Greenland Ice Sheet Climate Change Initiative (CCI) project.

This dataset consists of a time series of ice velocity with yearly sampling, derived from intensity tracking of PALSAR data acquired between 20-12-2016 and 17-03-2011. It provides components of the ice velocity and the magnitude of the velocity.

The data are provided on a polar stereographic grid (EPSG3413: Latitude of true scale 70N, Reference Longitude 45E). The horizontal velocity is provided in true meters per day, towards the EASTING(x) and NORTHING(y) directions of the grid; the vertical displacement (z), derived from a digital elevation model, is also provided. Please note that the previous versions of this product provided the horizontal velocities as true East and North velocities.

Both a single NetCDF file (including all measurements and annotation), and separate geotiff files with the velocity components are provided. The product was generated by GEUS. For further details, please consult the Product User Guide (v2.0)

Please note - this product was released on the Greenland Ice Sheets download page in June 2016, but an earlier product (also accidentally labelled v1.1) was available through the CCI Open Data Portal and the CEDA archive until 29th November 2016. Please now use the later v1.1 product.

Citable as:  ESA Greenland Ice Sheet CCI project team (2016): ESA Greenland Ice Sheet Climate Change Initiative (Greenland_Ice_Sheet_cci): Ice Velocity data for the Greenland Margin from the PALSAR instrument for 2006-2011, v1.1 (June 2016 version). Centre for Environmental Data Analysis, date of citation. https://catalogue.ceda.ac.uk/uuid/84b5cf8380894d719b61deac5abf3bae
Abbreviation: Not defined
Keywords: Greenland, Ice sheet, CCI, ESA

Details

Previous Info:

2016-11-29 Please note - this product was released on the Greenland Ice Sheets download page in June 2016, but an earlier product (also ac… Show More 2016-11-29 Please note - this product was released on the Greenland Ice Sheets download page in June 2016, but an earlier product (also accidentally labelled v1.1) was available through the CCI Open Data Portal and the CEDA archive until 29th November 2016. Please now use this later v1.1 product. Show Less

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: http://creativecommons.org/licenses/by/4.0/. 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 the ESA CCI Greenland Ice Sheet project team and supplied to CEDA in the context of the ESA CCI Open Data Portal Project.

File Format:
Data are in NetCDF and GeoTiff format

Process overview

  • var_id: crs
  • units: m/day
  • var_id: land_ice_surface_easting_velocity
  • units: m/day
  • var_id: land_ice_surface_easting_velocity_std
  • units: m/day
  • var_id: land_ice_surface_northing_velocity
  • units: m/day
  • var_id: land_ice_surface_northing_velocity_std
  • units: m/day
  • var_id: land_ice_surface_velocity_magnitude
  • units: m/day
  • var_id: land_ice_surface_velocity_magnitude_std
  • units: m/day
  • var_id: land_ice_surface_vertical_velocity
  • var_id: time_bnds
  • units: m
  • standard_name: projection_x_coordinate
  • long_name: x coordinate of projection
  • var_id: x
  • names: projection_x_coordinate, x coordinate of projection
  • units: m
  • long_name: y coordinate of projection
  • standard_name: projection_y_coordinate
  • var_id: y
  • names: projection_y_coordinate, y coordinate of projection

Co-ordinate Variables

  • long_name: Midpoint time of acquisitons used
  • standard_name: time
  • var_id: time
  • names: time, Midpoint time of acquisitons used
Coverage
Temporal Range
Start time:
2006-12-20T00:00:00
End time:
2011-03-17T23:59:59
Geographic Extent

 
90.0000°
 
-80.0000°
 
-10.0000°
 
60.0000°