Satellite-derived high-resolution sea-ice motion, 2007-2011 - Envisat Satellite Data

Envisat was was launched on 01/03/2002, by ESA and operated until 08/04/2012. It provided suitable imagery for the austral winters (May - November) of 2007 to 2011. Envisat caried a C-band (5.33 GHz; wavelength ∼ 5.6 cm) Advanced Synthetic Aperture Radar [ASAR], capable to acquire data in multiple modes (image, alternating polarization, wave, ScanSAR (wide swath), and ScanSAR (global monitoring)) at various incidence angles and in several polarisations.


Of ASAR's five distinct measurement modes, the following two modes may be used to derive sea-ice motion from overlapping images in our project:

1. ASAR Wide Swath Mode -- 400 km by 400 km wide swath image. Spatial resolution of approximately 150 m by 150 m for nominal product. VV or HH polarization.

2. ASAR Global Monitoring Mode -- Spatial resolution of approximately 1000 m in azimuth by 1000 m in range for nominal product. Up to a full orbit of coverage. HH or VV polarization.

For further detail, see ESA's Copernicus web portal.


Sea-ice motion is derived from suitable SAR image pairs with sufficient spatial overlap but relatively short time separation, i.e. ideally 6days or less. Image-crosscorrelation analysis is employed to identify displacement vectors within the image pair. The underlying processing and analysis is part of the (mostly) automated IMCORR [IMageCORRelation] Processing, Analysis and Display System [IPADS]. This study uses C-band (HH polarisation) ASAR scenes, with an image pixel size of 75 m across a 405 km swath. -- For further information see Giles et al., Semi-automated feature-tracking of East Antarctic sea ice from Envisat ASAR imagery, Remote Sensing of Environment, 115, 2267-2276, 2011.


Acknowledgement:

All Envisat ASAR data are courtesy of the European Space Agency, and were obtained under agreement with ESA.

The International Space Science Institute (ISSI), Bern, Switzerland, is acknowledged for supporting this study via Projects 137 and 169.

Simple

Identification info

Alternate title
Satellite-derived high-resolution sea-ice motion, 2007-2011 - Envisat Satellite Data
Date (Publication)
2022-02-28
Edition
1
Citation identifier
Dataset DOI

Title
Information and documentation - Digital object identifier system
Date (Publication)
2012-04-23
Citation identifier
ISO 26324:2012

Citation identifier
doi:10.26179/pw6z-xg53

Originator

Heil, P. and Hyland, G.

Publisher

Australian Antarctic Data Centre

Principal investigator

HEIL, PETRA
Australian Antarctic Programme Partnership
University of Tasmania
Private Bag 8001
Hobart, TAS 70
Hobart
Tasmania
7001
Australia

Principal investigator

HYLAND, GLENN
Australian Antarctic Program Partnership
Private Bag 80
Hobart TAS, 7001
Hobart
Tasmania
7001
Australia

Collaborator

HEIL, PETRA
Australian Antarctic Programme Partnership
University of Tasmania
Private Bag 8001
Hobart, TAS 70
Hobart
Tasmania
7001
Australia

Collaborator

HYLAND, GLENN
Australian Antarctic Program Partnership
Private Bag 80
Hobart TAS, 7001
Hobart
Tasmania
7001
Australia
Name
CAASM Metadata
Other citation details
Unreleased data
Website
https://data.aad.gov.au/metadata/records/AAS_4301_Envisat_sea_ice_motion

Purpose
The purpose of this dataset was to create a NetCDF-format database of high-resolution(:SAR) Antarctic sea-ice motion vectors.
Status
On going

Custodian

AU/AADC > Australian Antarctic Data Centre, Australia - AADC, DATA OFFICER (DATA CENTER CONTACT)
Australian Antarctic Division
203 Channel Highway
Kingston
Tasmania
7050
Australia
Topic category
  • Oceans

Extent

N
S
E
W


Extent

Description
Temporal Coverage

Temporal extent

TimePeriod
2007-01-05 2011-11-30
Title
Semi-automated feature-tracking of East Antarctic sea ice from Envisat ASAR imagery
Date (Publication)
2011
Citation identifier
115

Author

Giles et al.
Name
Remote Sensing of Environment
Page
2267-2276
Title
Improved Antarctic sea-ice motion fields from Sentinel-1 SAR imagery
Date (Publication)
2020

Author

Glenn Hyland, Petra Heil et al
Other citation details
In prep
NASA/GCMD Earth Science Keywords
  • EARTH SCIENCE > OCEANS > SEA ICE > SEA ICE MOTION
  • EARTH SCIENCE > CRYOSPHERE > SEA ICE > SEA ICE MOTION
Keywords
  • IMAGE CROSSCORRELATION
NASA/GCMD Earth Science Keywords
  • SAR > Synthetic Aperture Radar
NASA/GCMD Earth Science Keywords
  • ENVISAT > Environmental Satellite
NASA/GCMD Earth Science Keywords
  • ACE/CRC
  • AMD/AU
  • AMD
  • CEOS
NASA/GCMD Earth Science Keywords
  • GEOGRAPHIC REGION > POLAR
  • OCEAN > SOUTHERN OCEAN
  • CONTINENT > ANTARCTICA

Resource constraints

Use limitation
This metadata record is publicly available.

Resource constraints

Access constraints
licence
Other constraints
These data are not yet publicly available for download.

Resource constraints

File type
Portable Network Graphic
Linkage
Creative Commons by Attribution logo

Title
Attribution 4.0 International (CC BY 4.0)
Website
https://creativecommons.org/licenses/by/4.0/legalcode

Legal code for Creative Commons by Attribution 4.0 International license

Use constraints
licence
Other constraints
This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4301_Envisat_sea_ice_motion when using these data.
Language
English
Character encoding
UTF8

Distribution Information

Distributor

Distributor

AU/AADC > Australian Antarctic Data Centre, Australia - AADC, DATA OFFICER (DATA CENTER CONTACT)
Australian Antarctic Division
203 Channel Highway
Kingston
Tasmania
7050
Australia

Distributor

Fees
Free
Planned available datetime
2022-02-28T00:00:00
Units of distribution
GB
Transfer size
12.8
Distribution format
  • Net CDF

OnLine resource
GET DATA > DIRECT DOWNLOAD

Download the dataset.

OnLine resource
PROJECT HOME PAGE

Public information for AAS project 4301

OnLine resource
VIEW RELATED INFORMATION

Citation reference for this metadata record and dataset.

Resource lineage

Statement
The geolocation accuracy of the relevant Envisat ASAR products have an absolute error of up to 750 m (10 pixels) due to inaccuracies in the positional specifications in the SAR image headers. However, as the sea-ice motion applies a differencing technique, the absolute errors offset each other and derived ice displacement are in the order of 1.5pixels width or 115m.
Hierarchy level
Dataset
Maintenance and update frequency
As needed
Maintenance note
2020-12-11 - record created by Petra Heil.

Metadata

Metadata identifier
string/AAS_4301_Envisat_sea_ice_motion

Language
English
Character encoding
UTF8

Author

HEIL, PETRA
Australian Antarctic Programme Partnership
University of Tasmania
Private Bag 8001
Hobart, TAS 70
Hobart
Tasmania
7001
Australia

Author

HYLAND, GLENN
Australian Antarctic Program Partnership
Private Bag 80
Hobart TAS, 7001
Hobart
Tasmania
7001
Australia

Sponsor

Australian Antarctic Division

Owner

AADC

Type of resource

Resource scope
Dataset

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Citation identifier
13a908e1-42f8-4687-b67d-bd4dab7a9a28

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Date (Last Revision)
2020-12-14T11:16:22

Identifier

Description
metadata.extraction_date

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Citation identifier
8.6

Metadata linkage
http://data.aad.gov.au/metadata/records/AAS_4301_Envisat_sea_ice_motion

Point of truth for the metadata record

Date info (Creation)
2020-12-11T00:00:00
Date info (Last Update)
2020-12-14

Metadata standard

Title
ISO 19115-3
Edition
2014
Other citation details
Version 1
Title
DIF to ISO 19115-1 Profile
 
 

Overviews

Spatial extent

N
S
E
W


Keywords


Provided by

Share on social sites

Access to the record in catalogue

Associated resources

Not available