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

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

Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research › peer-review

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 language	English
Title of host publication	Proceedings of ESA Living Planet Symposium
Publisher	European Space Agency
Publication date	2013
Publication status	Published - 2013
Event	ESA Living Planet Symposium — 2013 - Edinburgh, United Kingdom Duration: 9 Sept 2013 → 13 Sept 2013

Conference

Conference	ESA Living Planet Symposium — 2013
Country/Territory	United Kingdom
City	Edinburgh
Period	09/09/2013 → 13/09/2013

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title = "Surface elevation changes of the greenland ice sheet - results from ESA'S ice sheet CCI",

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.",

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year = "2013",

language = "English",

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publisher = "European Space Agency",

note = "ESA Living Planet Symposium — 2013 ; Conference date: 09-09-2013 Through 13-09-2013",

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TY - ABST

T1 - Surface elevation changes of the greenland ice sheet - results from ESA'S ice sheet CCI

AU - Fredenslund Levinsen, Joanna

AU - Khvorostovky, Kirill

AU - Meister, Rakia

AU - Sørensen, Louise Sandberg

AU - Ticconi, Francesca

AU - Forsberg, René

AU - Shepherd, Andrew

PY - 2013

Y1 - 2013

N2 - 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.

AB - 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.

M3 - Conference abstract in proceedings

BT - Proceedings of ESA Living Planet Symposium

PB - European Space Agency

T2 - ESA Living Planet Symposium — 2013

Y2 - 9 September 2013 through 13 September 2013

ER -

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

Abstract

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