Validation of Surface Elevation from TanDEM-X Digital Elevation Models of Devon Island Ice Cap, Canadian High Arctic
Digital elevation models (DEMs) generated by the TanDEM-X mission from synthetic aperture radar interferometry (InSAR) provide an excellent potential resource to study the geodetic mass balance of glaciers. However, they typically suffer from a negative bias in surface elevations on glacierized terr...
Main Author: | |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Université d'Ottawa / University of Ottawa
2019
|
Subjects: | |
Online Access: | https://dx.doi.org/10.20381/ruor-24102 http://ruor.uottawa.ca/handle/10393/39863 |
id |
ftdatacite:10.20381/ruor-24102 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.20381/ruor-24102 2023-05-15T14:50:54+02:00 Validation of Surface Elevation from TanDEM-X Digital Elevation Models of Devon Island Ice Cap, Canadian High Arctic Bernard-Grand'Maison, Claire 2019 https://dx.doi.org/10.20381/ruor-24102 http://ruor.uottawa.ca/handle/10393/39863 en eng Université d'Ottawa / University of Ottawa Devon Island Ice Cap Glaciology TanDEM-X Digital Elevation Model Canadian Arctic Glacier Mass Balance CreativeWork article 2019 ftdatacite https://doi.org/10.20381/ruor-24102 2021-11-05T12:55:41Z Digital elevation models (DEMs) generated by the TanDEM-X mission from synthetic aperture radar interferometry (InSAR) provide an excellent potential resource to study the geodetic mass balance of glaciers. However, they typically suffer from a negative bias in surface elevations on glacierized terrain due to penetration of radar waves into the snowpack and firn. In this thesis, TanDEM-X DEMs from 2010 to 2018 over Devon Island Ice Cap (DIC), Canadian High Arctic, are validated using independent surface elevation datasets from ArcticDEM, IceBridge laser altimetry and ground GPS transects. In agreement with previous studies using TanDEM-X DEMs, the bias is most significant in the percolation and saturation zones (i.e., accumulation area), where volume scattering and loss of interferometric coherence is greatest compared to the bare ice zone. The average elevation bias on DIC is -2.74 ±0.25 m, which should be accounted for in error budgets for geodetic mass balance estimates to be reliable. Article in Journal/Newspaper Arctic Devon Island Ice cap DataCite Metadata Store (German National Library of Science and Technology) Arctic Devon Island ENVELOPE(-88.000,-88.000,75.252,75.252) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Devon Island Ice Cap Glaciology TanDEM-X Digital Elevation Model Canadian Arctic Glacier Mass Balance |
spellingShingle |
Devon Island Ice Cap Glaciology TanDEM-X Digital Elevation Model Canadian Arctic Glacier Mass Balance Bernard-Grand'Maison, Claire Validation of Surface Elevation from TanDEM-X Digital Elevation Models of Devon Island Ice Cap, Canadian High Arctic |
topic_facet |
Devon Island Ice Cap Glaciology TanDEM-X Digital Elevation Model Canadian Arctic Glacier Mass Balance |
description |
Digital elevation models (DEMs) generated by the TanDEM-X mission from synthetic aperture radar interferometry (InSAR) provide an excellent potential resource to study the geodetic mass balance of glaciers. However, they typically suffer from a negative bias in surface elevations on glacierized terrain due to penetration of radar waves into the snowpack and firn. In this thesis, TanDEM-X DEMs from 2010 to 2018 over Devon Island Ice Cap (DIC), Canadian High Arctic, are validated using independent surface elevation datasets from ArcticDEM, IceBridge laser altimetry and ground GPS transects. In agreement with previous studies using TanDEM-X DEMs, the bias is most significant in the percolation and saturation zones (i.e., accumulation area), where volume scattering and loss of interferometric coherence is greatest compared to the bare ice zone. The average elevation bias on DIC is -2.74 ±0.25 m, which should be accounted for in error budgets for geodetic mass balance estimates to be reliable. |
format |
Article in Journal/Newspaper |
author |
Bernard-Grand'Maison, Claire |
author_facet |
Bernard-Grand'Maison, Claire |
author_sort |
Bernard-Grand'Maison, Claire |
title |
Validation of Surface Elevation from TanDEM-X Digital Elevation Models of Devon Island Ice Cap, Canadian High Arctic |
title_short |
Validation of Surface Elevation from TanDEM-X Digital Elevation Models of Devon Island Ice Cap, Canadian High Arctic |
title_full |
Validation of Surface Elevation from TanDEM-X Digital Elevation Models of Devon Island Ice Cap, Canadian High Arctic |
title_fullStr |
Validation of Surface Elevation from TanDEM-X Digital Elevation Models of Devon Island Ice Cap, Canadian High Arctic |
title_full_unstemmed |
Validation of Surface Elevation from TanDEM-X Digital Elevation Models of Devon Island Ice Cap, Canadian High Arctic |
title_sort |
validation of surface elevation from tandem-x digital elevation models of devon island ice cap, canadian high arctic |
publisher |
Université d'Ottawa / University of Ottawa |
publishDate |
2019 |
url |
https://dx.doi.org/10.20381/ruor-24102 http://ruor.uottawa.ca/handle/10393/39863 |
long_lat |
ENVELOPE(-88.000,-88.000,75.252,75.252) |
geographic |
Arctic Devon Island |
geographic_facet |
Arctic Devon Island |
genre |
Arctic Devon Island Ice cap |
genre_facet |
Arctic Devon Island Ice cap |
op_doi |
https://doi.org/10.20381/ruor-24102 |
_version_ |
1766321965135560704 |