|
Description
|
Greenland Ice Velocity from Sentinel-1
The PROMICE Ice Velocity product is a timeseries of Greenland Ice Sheet velocity mosaics based on ESA Sentinel-1 SAR offset tracking.
The product spans the period January 2016 to present.
Spatial resolution: 500 m
Temporal resolution: A new mosaic spanning 2 Sentinel-1A cycles i.e. 24 days is posted every 12 days.
Each mosaic: All possible 6 and 12 day pairs using Sentinel-1A and 1B is included in the mosaic.
Each mosaic is supplied as a NetCDF file.
Projection: Polar Stereographic projection (EPSG: 3413)
The data product is described in detail in Solgaard et al., 2021 (see reference below)
We aim to make each new mosaic available within 10 days of the last included acquisition.
To see and post comments/recommendations please check out: github.com/GEUS-PROMICE/Sentinel-1_Greenland_Ice_Velocity
Main updates for this Edition:
The dataset has been extended back in time and now covers: January 2016 - Present
Main updates performed for Edition 2:
- All 6 day and 12 day pairs possible are included in each 2 cycle mosaic.
- We no longer mask out results in ice free areas in order to avoid removing ice flow as the ice sheet advances
- We apply the culling scheme described in Solgaard, A., Kusk, A., Merryman Boncori, J. P., Dall, J., Mankoff, K. D., Ahlstrøm, A. P., Andersen, S. B., Citterio, M., Karlsson, N. B., Kjeldsen, K. K., Korsgaard, N. J., Larsen, S. H., and Fausto, R. S.: Greenland ice velocity maps from the PROMICE project, Earth Syst. Sci. Data, 13, 3491–3512, https://doi.org/10.5194/essd-13-3491-2021, 2021.
- NOTE: From version 11: Prior to version 11, the mosaics covering dates in 2021 were not culled correctly. In version 11 the affected mosaics have been re-culled and uploaded.
- NOTE: From version 31:Prior to version 31, there were gaps in the timeseries in 2017. These have now been filled.
NOTE: No 6 day pairs in mosaics since Dec 23 2021: Due to a faliure on Sentinel-1 B, no data has been received from the satellite since Dec 23 2021. For this reason the mosaics produced since then includes no 6 day pairs. This limits the quality of the posted ice velocity mosaics.
How to cite:
- When using the dataset please use: Anne Solgaard; Anders Kusk, 2021, "Greenland Ice Velocity from Sentinel-1 Edition 3", https://doi.org/10.22008/promice/data/sentinel1icevelocity/greenlandicesheet, GEUS Dataverse
- Literature citation: Solgaard, A., Kusk, A., Merryman Boncori, J. P., Dall, J., Mankoff, K. D., Ahlstrøm, A. P., Andersen, S. B., Citterio, M., Karlsson, N. B., Kjeldsen, K. K., Korsgaard, N. J., Larsen, S. H., and Fausto, R. S.: Greenland ice velocity maps from the PROMICE project, Earth Syst. Sci. Data, 13, 3491–3512, https://doi.org/10.5194/essd-13-3491-2021, 2021.
- Please add the following to your acknowledgements: "Ice velocity maps were produced as part of the Programme for Monitoring of the Greenland Ice Sheet (PROMICE) using Copernicus Sentinel-1 SAR images distributed by ESA, and were provided by the Geological Survey of Denmark and Greenland (GEUS) at http://www.promice.dk."
(2022-10-01)
|
|
Related Publication
| Solgaard, A., Kusk, A., Merryman Boncori, J. P., Dall, J., Mankoff, K. D., Ahlstrøm, A. P., Andersen, S. B., Citterio, M., Karlsson, N. B., Kjeldsen, K. K., Korsgaard, N. J., Larsen, S. H., and Fausto, R. S.: Greenland ice velocity maps from the PROMICE project, Earth Syst. Sci. Data, 13, 3491–3512, https://doi.org/10.5194/essd-13-3491-2021, 2021.
|
|
Notes
| All files can be downloaded with the following bash script. It relies on curl.
export SERVER=https://dataverse.geus.dk
export DOI=10.22008/FK2/ZEGVXU
curl ${SERVER}/api/datasets/:persistentId?persistentId=doi:${DOI} > dv.json
cat dv.json | tr ',' '\n' | grep -E '"persistentId"' | cut -d'"' -f4 > urls.txt
while read -r PID; do
curl -O -J $SERVER/api/access/datafile/:persistentId?persistentId=${PID}
done < urls.txt
rm dv.json urls.txt # cleanup
wget download command:
wget -r -e robots=off -nH --cut-dirs=3 --content-disposition "https://dataverse.geus.dk/api/datasets/:persistentId/dirindex?persistentId=doi:10.22008/FK2/ZEGVXU"
|
