DESIDE Image Warping Capability

There can be a long wait before the next satellite image is received during which sea ice can move a considerable distance. The DESIDE Image Warp Capability transforms the most current satellite image using a sea ice dirft forecast to simulate what the ice in a region should look like in the future. The algorithm uses the neXtSIM model (https://data.marine.copernicus.eu/product/ARCTIC_ANALYSISFORECAST_PHY_ICE_002_011/description) for ice drift forecasts up to six hours ahead.

1. Select the “Image Warping Capability”

2. Pan and zoom in to the location of interest. A high zoom level is needed to display the Sentinel-1 images. The timeline in the left panel can be used to select the desired date and time.

3. Use the “Select area on the map” tool to select the Region of Interest. Enter the “Select start date” to correspond to the date in the left panel. Select the number of Ground Control Points (GCPs) to be used. A higher number provides a more accurate morping, but takes much longer to run.

4. Click on “Execute”. Running of the capability can take couple minutes, depending on the size of the area. Note that previous runs are stored locally and can be retrieved.

5. When the run is completed, or if a previous run is retreived, the results can be stepped through in one-hour increments.

6.