Preliminary results of the ice_sheet_CCI round robin activity on the estimation of surface elevation changes

This work presents the first results of a research activity aiming to compare estimates of Surface Elevation Changes (SEC) over the Jakobshavn Isbræ basin (Greenland) using different repeat altimetry techniques and different sensors (laser vs. radar altimetry). The goal of this comparison is the ide...

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Bibliographic Details
Published in:2013 IEEE International Geoscience and Remote Sensing Symposium - IGARSS
Main Authors: Ticconi, F., Fredenslund Levinsen, Joanna, Khvorostovsky, K., Forsberg, René, Shepherd, A.
Format: Other Non-Article Part of Journal/Newspaper
Language:English
Published: IEEE 2013
Subjects:
glaciology
height measurement
hydrological techniques
optical radar
remote sensing by laser beam
remote sensing by radar
Fields
Waves and Electromagnetics
airborne lidar data
algorithm accuracy
algorithm coverage
algorithm processing effort
Altimetry
cross over method
ESA CryoVex campaign
glacier surface elevation changes
Greenland
Ice
Ice_Sheet_CCI round robin activity
Jakobshavn Isbrae basin
laser altimetry
Laser radar
NASA ICEBridge campaign
radar altimetry
repeat altimetry techniques
repeat track method
repeat-pass altimetry
SEC estimation
Sensors
Spaceborne radar
surface elevation change estimation
surface elevation change map generation
Surface topography
Jakobshavn Isbræ
glacier
Jakobshavn
Jakobshavn isbræ
Online Access:https://orbit.dtu.dk/en/publications/f34f9d0e-ae19-4687-8d7c-e597af425072
https://doi.org/10.1109/IGARSS.2013.6721137
Description
Summary:This work presents the first results of a research activity aiming to compare estimates of Surface Elevation Changes (SEC) over the Jakobshavn Isbræ basin (Greenland) using different repeat altimetry techniques and different sensors (laser vs. radar altimetry). The goal of this comparison is the identification of the best performing algorithm, in terms of accuracy, coverage and processing effort, for the generation of surface elevation change maps. The methods investigated here are the cross-over and repeat-track. The results of the inter-comparison are here reported and, from a first analysis, it is found that both radar and laser altimetry resolve the surface elevation changes quite well, and that the problems found mainly in the coastal region and along the main trunk can be solved by combining the two methods. The comparison with airborne lidar data from the NASA ICEBridge and the ESA CryoVex campaigns is in progress.

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