Error Characteristics of Pan-Arctic Digital Elevation Models and Elevation Derivatives in Northern Sweden
Many biochemical processes and dynamics are strongly controlled by terrain topography, making digital elevation models (DEM) a fundamental dataset for a range of applications. This study investigates the quality of four pan-Arctic DEMs (Arctic DEM, ASTER DEM, ALOS DEM and Copernicus DEM) within the...
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2021
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Online Access: | https://doi.org/10.3390/rs13224653 https://doaj.org/article/730eefba70ed45389b0cd4c836f0a737 |
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ftdoajarticles:oai:doaj.org/article:730eefba70ed45389b0cd4c836f0a737 2023-05-15T14:41:26+02:00 Error Characteristics of Pan-Arctic Digital Elevation Models and Elevation Derivatives in Northern Sweden Martin Karlson David Bastviken Heather Reese 2021-11-01T00:00:00Z https://doi.org/10.3390/rs13224653 https://doaj.org/article/730eefba70ed45389b0cd4c836f0a737 EN eng MDPI AG https://www.mdpi.com/2072-4292/13/22/4653 https://doaj.org/toc/2072-4292 doi:10.3390/rs13224653 2072-4292 https://doaj.org/article/730eefba70ed45389b0cd4c836f0a737 Remote Sensing, Vol 13, Iss 4653, p 4653 (2021) digital elevation model accuracy assessment elevation derivatives terrain Arctic region land cover Science Q article 2021 ftdoajarticles https://doi.org/10.3390/rs13224653 2022-12-30T20:32:01Z Many biochemical processes and dynamics are strongly controlled by terrain topography, making digital elevation models (DEM) a fundamental dataset for a range of applications. This study investigates the quality of four pan-Arctic DEMs (Arctic DEM, ASTER DEM, ALOS DEM and Copernicus DEM) within the Kalix River watershed in northern Sweden, with the aim of informing users about the quality when comparing these DEMs. The quality assessment focuses on both the vertical accuracy of the DEMs and their abilities to model two fundamental elevation derivatives, including topographic wetness index (TWI) and landform classification. Our results show that the vertical accuracy is relatively high for Arctic DEM, ALOS and Copernicus and in our study area was slightly better than those reported in official validation results. Vertical errors are mainly caused by tree cover characteristics and terrain slope. On the other hand, the high vertical accuracy does not translate directly into high quality elevation derivatives, such as TWI and landform classes, as shown by the large errors in TWI and landform classification for all four candidate DEMs. Copernicus produced elevation derivatives with results most similar to those from the reference DEM, but the errors are still relatively high, with large underestimation of TWI in land cover classes with a high likelihood of being wet. Overall, the Copernicus DEM produced the most accurate elevation derivatives, followed by slightly lower accuracies from Arctic DEM and ALOS, and the least accurate being ASTER. Article in Journal/Newspaper Arctic Northern Sweden Directory of Open Access Journals: DOAJ Articles Arctic Kalix ENVELOPE(23.156,23.156,65.853,65.853) Remote Sensing 13 22 4653 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
digital elevation model accuracy assessment elevation derivatives terrain Arctic region land cover Science Q |
spellingShingle |
digital elevation model accuracy assessment elevation derivatives terrain Arctic region land cover Science Q Martin Karlson David Bastviken Heather Reese Error Characteristics of Pan-Arctic Digital Elevation Models and Elevation Derivatives in Northern Sweden |
topic_facet |
digital elevation model accuracy assessment elevation derivatives terrain Arctic region land cover Science Q |
description |
Many biochemical processes and dynamics are strongly controlled by terrain topography, making digital elevation models (DEM) a fundamental dataset for a range of applications. This study investigates the quality of four pan-Arctic DEMs (Arctic DEM, ASTER DEM, ALOS DEM and Copernicus DEM) within the Kalix River watershed in northern Sweden, with the aim of informing users about the quality when comparing these DEMs. The quality assessment focuses on both the vertical accuracy of the DEMs and their abilities to model two fundamental elevation derivatives, including topographic wetness index (TWI) and landform classification. Our results show that the vertical accuracy is relatively high for Arctic DEM, ALOS and Copernicus and in our study area was slightly better than those reported in official validation results. Vertical errors are mainly caused by tree cover characteristics and terrain slope. On the other hand, the high vertical accuracy does not translate directly into high quality elevation derivatives, such as TWI and landform classes, as shown by the large errors in TWI and landform classification for all four candidate DEMs. Copernicus produced elevation derivatives with results most similar to those from the reference DEM, but the errors are still relatively high, with large underestimation of TWI in land cover classes with a high likelihood of being wet. Overall, the Copernicus DEM produced the most accurate elevation derivatives, followed by slightly lower accuracies from Arctic DEM and ALOS, and the least accurate being ASTER. |
format |
Article in Journal/Newspaper |
author |
Martin Karlson David Bastviken Heather Reese |
author_facet |
Martin Karlson David Bastviken Heather Reese |
author_sort |
Martin Karlson |
title |
Error Characteristics of Pan-Arctic Digital Elevation Models and Elevation Derivatives in Northern Sweden |
title_short |
Error Characteristics of Pan-Arctic Digital Elevation Models and Elevation Derivatives in Northern Sweden |
title_full |
Error Characteristics of Pan-Arctic Digital Elevation Models and Elevation Derivatives in Northern Sweden |
title_fullStr |
Error Characteristics of Pan-Arctic Digital Elevation Models and Elevation Derivatives in Northern Sweden |
title_full_unstemmed |
Error Characteristics of Pan-Arctic Digital Elevation Models and Elevation Derivatives in Northern Sweden |
title_sort |
error characteristics of pan-arctic digital elevation models and elevation derivatives in northern sweden |
publisher |
MDPI AG |
publishDate |
2021 |
url |
https://doi.org/10.3390/rs13224653 https://doaj.org/article/730eefba70ed45389b0cd4c836f0a737 |
long_lat |
ENVELOPE(23.156,23.156,65.853,65.853) |
geographic |
Arctic Kalix |
geographic_facet |
Arctic Kalix |
genre |
Arctic Northern Sweden |
genre_facet |
Arctic Northern Sweden |
op_source |
Remote Sensing, Vol 13, Iss 4653, p 4653 (2021) |
op_relation |
https://www.mdpi.com/2072-4292/13/22/4653 https://doaj.org/toc/2072-4292 doi:10.3390/rs13224653 2072-4292 https://doaj.org/article/730eefba70ed45389b0cd4c836f0a737 |
op_doi |
https://doi.org/10.3390/rs13224653 |
container_title |
Remote Sensing |
container_volume |
13 |
container_issue |
22 |
container_start_page |
4653 |
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1766313206912909312 |