Satellite-derived high-resolution sea-ice motion in the Southern Ocean, 2015-2019 - ESA Sentinel1 Satellite Data

Sea-ice motion derived from two (partially) overlapping ESA Sentinel1 [S1]A or B scenes. Satellites S1A/B carry C-band (5.405 GHz) Synthetic Aperture Radar [SAR] sensors. For this data set images from the Extra Wide swath (EW) mode of operation (swath width 410 km) have been used. EW mode data are available as a medium-resolution ground range detected (GRD) product, i.e., resolution of 93 × 87 m and pixel size 40 × 40 m. Approximately two-thirds of the EW mode data recorded over the Antarctic area are dual-polarisation (HH + HV) products. The remainder are mainly single-polarisation (HH) products. For further detail, see ESA's Copernicus web portal.


Ice motion is derived from suitable SAR image pairs with sufficient spatial overlap but relatively short time separation, i.e. ideally 6 days or less. Image-crosscorrelation analysis is employed to identify displacement vectors within the image pair.

Simple

Identification info

Alternate title
Satellite-derived high-resolution sea-ice motion in the Southern Ocean, 2015-2019
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:10.26179/44b1-j694

Originator

Heil, P. and Hyland, G.

Publisher

Australian Antarctic Data Centre

Principal investigator

HEIL, PETRA
Australian Antarctic Program Partnership
University of Tasmania
Private Bag 8001
Hobart
Tasmania
7001
Australia

Principal investigator

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

Collaborator

HEIL, PETRA
Australian Antarctic Program Partnership
University of Tasmania
Private Bag 8001
Hobart
Tasmania
7001
Australia

Collaborator

HYLAND, GLENN
Australian Antarctic Program Partnership
Private Bag 80
Hobart
Tasmania
7001
Australia
Name
CAASM Metadata
Other citation details
Unreleased data
Website
https://data.aad.gov.au/metadata/records/AAS_4301_satellite_Sea_ice_motion

Purpose
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
  • Climatology, meteorology, atmosphere

Extent

N
S
E
W


Extent

Description
Temporal Coverage

Temporal extent

TimePeriod
2015-01-01 2019-12-31
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
  • SATELLITES
  • SENTINEL-1 > SENTINEL-1A
  • SENTINEL-1 > SENTINEL-1B
NASA/GCMD Earth Science Keywords
  • AMD/AU
  • AMD
  • ACE/CRC
  • 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_satellite_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
14.6
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
With regards to the geolocation accuracy of Sentinel-1 EW high-resolution ground range detected (GRD) product, it has been found that the 3σ accuracy specification is be approximately ±14.4 m (or ±0.36 pixels). This correlation uncertainty is sub-pixel, in agreement with that of Landsat data with an uncertainty of about 0.8 pixel. The accuracy of the image crosscorrelation has a standard deviation of σ = 0.4 pixels (or 16 m). With the geocoding accuracy of 4.8 m (about 0.1 pixels), then this suggests the image-correlation uncertainty is the dominant error component at around ±0.3 pixels. These data will be presented in a manuscript currently in preparation: Improved Antarctic sea-ice motion fields from Sentinel-1 SAR imagery Glenn Hyland, Petra Heil, and others In preparation, 2020
Hierarchy level
Dataset
Maintenance and update frequency
As needed
Maintenance note
2020-12-03 - record created by Petra Heil. 2021-07-26 - record updated by Petra Heil.

Metadata

Metadata identifier
string/AAS_4301_satellite_Sea_ice_motion

Language
English
Character encoding
UTF8

Author

HEIL, PETRA
Australian Antarctic Program Partnership
University of Tasmania
Private Bag 8001
Hobart
Tasmania
7001
Australia

Author

HYLAND, GLENN
Australian Antarctic Program Partnership
Private Bag 80
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)
2021-07-26T15:12:03

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_satellite_Sea_ice_motion

Point of truth for the metadata record

Date info (Creation)
2020-12-03T00:00:00
Date info (Last Update)
2021-07-26

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


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