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Remote Sens. 2015, 7(7), 9371-9389; doi:10.3390/rs70709371

The Sentinel-1 Mission: New Opportunities for Ice Sheet Observations

1
ENVEO IT GmbH, Technikerstrasse 21a, A-6020 Innsbruck, Austria
2
Institute for Meteorology and Geophysics, University of Innsbruck, A-6020 Innsbruck, Austria
3
European Space Agency/ESRIN, via Galileo Galilei, I-00044 Frascati, Italy
*
Author to whom correspondence should be addressed.
Academic Editors: Nicolas Baghdadi and Prasad Thenkabail
Received: 28 May 2015 / Revised: 6 July 2015 / Accepted: 14 July 2015 / Published: 22 July 2015
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Abstract

The Sentinel satellite constellation series, developed by the European Space Agency, represents the dedicated space component of the European Copernicus program, committed to long-term operational services in a wide range of application domains. Here, we address the potential of the Sentinel-1 mission for mapping and monitoring the surface velocity of glaciers and ice sheets. We present an ice velocity map of Greenland, derived from synthetic aperture radar (SAR) data acquired in winter 2015 by Sentinel-1A, the first satellite of the Copernicus program in orbit. The map is assembled from about 900 SAR scenes acquired in Interferometric Wide swath (IW) mode, applying the offset tracking technique. We discuss special features of IW mode data, describe the procedures for producing ice velocity maps, and assess the uncertainty of the ice motion product. We compare the Sentinel-1 ice motion product with velocity maps derived from high resolution SAR data of the TerraSAR-X mission and from PALSAR data. Beyond supporting operational services, the Sentinel-1 mission offers enhanced capabilities for comprehensive and long-term observation of key climate variables, such as the motion of ice masses. View Full-Text
Keywords: Sentinel-1; SAR; ice motion; Greenland Sentinel-1; SAR; ice motion; Greenland
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Nagler, T.; Rott, H.; Hetzenecker, M.; Wuite, J.; Potin, P. The Sentinel-1 Mission: New Opportunities for Ice Sheet Observations. Remote Sens. 2015, 7, 9371-9389.

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