Surface elevation changes of the greenland ice sheet - results from ESA'S ice sheet CCI

Joanna Fredenslund Levinsen, Kirill Khvorostovky, Rakia Meister, Louise Sandberg Sørensen, Francesca Ticconi, René Forsberg, Andrew Shepherd

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Abstract

In order to ensure long-term climate data records for the Greenland Ice Sheet (GIS), ESA have launched the Climate Change Initiative (CCI). This work presents the preliminary steps towards the Ice Sheet CCI's surface elevation change (SEC) derivation using radar altimeter data. In order to find the most optimal method, a Round Robin exercise was conducted in which the scientific community was asked to provide their best SEC estimate over the Jakobshavn Isbr drainage basin. The participants used both repeat-track (RT), overlapping footprints, and the cross-over (XO) methods, and both ICESat laser and Envisat radar altimeter data were used. Based on this and feedback sheets describing their methods we found that a combination of the RT and XO techniques yielded the best results. In the following, the obtained results will be presented and discussed.
Original languageEnglish
Title of host publication Proceedings of ESA Living Planet Symposium
PublisherEuropean Space Agency
Publication date2013
Publication statusPublished - 2013
EventESA Living Planet Symposium — 2013 - Edinburgh, United Kingdom
Duration: 9 Sep 201313 Sep 2013

Conference

ConferenceESA Living Planet Symposium — 2013
Country/TerritoryUnited Kingdom
CityEdinburgh
Period09/09/201313/09/2013

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