IceMotion: High resolution sea-ice motion from Synthetical Aperture Radar using pattern tracking and Doppler shift

IceMotion will provide new SAR-derived sea ice motion data based on combined use of
feature tracking and Doppler shift data for research and monitoring in ice-covered Polar seas.

Objectives

The IceMotion project will develop high-resolution sea ice motion algorithm and data sets based on SAR data from Sentinel-1 and Radarsat-2 SAR images in order to improve sea ice observation and modelling on regional and local scale as well as support to climate research in the polar regions.

Specific objectives are:

  1. Implement and test a pattern-tracking sea ice motion algorithm using co- and cross-polarisation images with rotation and quality estimation.
  2. Retrieve and evaluate range-oriented velocity fields from SAR Doppler shift analysis including combination with ice drift from pattern-tracking.
  3. Calculate ice deformation from the ice velocity fields in order to compare with elastic-brittle sea ice model of the SIMech project.
  4. Develop a sustainable processing system for ice drift retrieval to be operated under Copernicus.
  5. Exploitation of results towards user groups in polar regions such as sea ice modeller, operational ice services, navigation, offshore operation, climate research and environmental monitoring.

Project Summary

Sea-ice motion is an essential variable to observe from EO data, because it strongly influences the distribution of sea-ice on different spatial and temporal scales. Ice drift causes advection of ice from one region to another and export of ice from the Arctic Ocean to the sub-Arctic seas. The proposal will exploit Synthetic Aperture Radar (SAR) data from Sentinel-1and Radarsat-2 for sea ice research and prepare for operational use of Sentinel-1 data. The main objective of IceMotion is to develop new SAR-derived sea ice motion data with high resolution (ca. 1 km) to observe and model sea ice dynamics, in particular ice deformation. The ice drift will be based on combined use of pattern tracking and Doppler shift data. Such high-resolution ice drift data are not yet provided and will be important for observation of ice divergence/convergence, leads, ridges and other regional and local ice processes. A long-term goal is to combine sea ice drift, including deformation, with ice type classification from SAR data to create innovative, high-resolution ice maps. The results will be exploited towards user groups in polar regions such as sea-ice modeller, operational ice forecasting services, ice navigation, offshore operation, climate research and environmental monitoring including tracking of pollution embedded in sea ice. The proposal will develop a sustainable rocessing system for ice drift retrieval from Sentinel-1 and Radarsat-2 data, to be operated under Copernicus marine services.

 
Project Details
Acronym: 
IceMotion
Funding Agency: 
Research Council of Norway
NERSC Principal Investigator: 
Stein Sandven
Project Deputy Leader at NERSC: 
Mohamed Babiker
Coordinating Institute: 
Nansen Environmental and Remote Sensing Center
Project Status: 
Ongoing