Evaluation of historic and operational satellite radar altimetry missions for constructing consistent long-term lake water level records
A total of 13 satellite missions have been launched since 1985, with different types of radar altimeters on board. This study intends to make a comprehensive evaluation of historic and currently operational satellite radar altimetry missions for lake water level retrieval over the same set of lakes...
Published in: | Hydrology and Earth System Sciences |
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/331602 2023-08-20T04:07:35+02:00 Evaluation of historic and operational satellite radar altimetry missions for constructing consistent long-term lake water level records Shu, Song Liu, Hongxing Beck, Richard A. Frappart, Frédéric Korhonen, Johanna Lan, Minxuan Xu, Min Yang, Bo Huang, Yan 2021-06-18T09:42:02Z application/pdf http://hdl.handle.net/10138/331602 https://doi.org/10.5194/hess-25-1643-2021 eng eng Copernicus Publications European Geosciences Union Hydrology and Earth System Sciences Discussions 25 1643-1670 Shu, S., Liu, H., Beck, R. A., Frappart, F., Korhonen, J., Lan, M., Xu, M., Yang, B., and Huang, Y.: Evaluation of historic and operational satellite radar altimetry missions for constructing consistent long-term lake water level records, Hydrol. Earth Syst. Sci., 25, 1643–1670, https://doi.org/10.5194/hess-25-1643-2021 https://doi.org/10.5194/hess-25-1643-2021 http://hdl.handle.net/10138/331602 CC BY 4.0 openAccess case study rivers water levels hydrology North America Canada Finland Sweden remote sensing monitoring tapaustutkimus järvet aikasarjat kaukokartoitus vedenkorkeus Inarijärvi Pohjois-Amerikka seuranta Kanada Suomi hydrologia Ruotsi Lokka Oulujärvi Article 2021 ftunivhelsihelda https://doi.org/10.5194/hess-25-1643-2021 2023-07-28T06:24:53Z A total of 13 satellite missions have been launched since 1985, with different types of radar altimeters on board. This study intends to make a comprehensive evaluation of historic and currently operational satellite radar altimetry missions for lake water level retrieval over the same set of lakes and to develop a strategy for constructing consistent long-term water level records for inland lakes at global scale. The lake water level estimates produced by different retracking algorithms (retrackers) of the satellite missions were compared with the gauge measurements over 12 lakes in four countries. The performance of each retracker was assessed in terms of the data missing rate, the correlation coefficient r, the bias, and the root mean square error (RMSE) between the altimetry-derived lake water level estimates and the concurrent gauge measurements. The results show that the model-free retrackers (e.g., OCOG/Ice-1/Ice) outperform the model-based retrackers for most of the missions, particularly over small lakes. Among the satellite altimetry missions, Sentinel-3 gave the best results, followed by SARAL. ENVISAT has slightly better lake water level estimates than Jason-1 and Jason-2, but its data missing rate is higher. For small lakes, ERS-1 and ERS-2 missions provided more accurate lake water level estimates than the TOPEX/Poseidon mission. In contrast, for large lakes, TOPEX/Poseidon is a better option due to its lower data missing rate and shorter repeat cycle. GeoSat and GeoSat Follow-On (GFO) both have an extremely high data missing rate of lake water level estimates. Although several contemporary radar altimetry missions provide more accurate lake level estimates than GFO, GeoSat was the sole radar altimetry mission, between 1985 and 1990, that provided the lake water level estimates. With a full consideration of the performance and the operational duration, the best strategy for constructing long-term lake water level records should be a two-step bias correction and normalization procedure. In the first ... Article in Journal/Newspaper Inarijärvi Helsingfors Universitet: HELDA – Helsingin yliopiston digitaalinen arkisto Canada Inarijärvi ENVELOPE(27.796,27.796,69.023,69.023) Lokka ENVELOPE(27.734,27.734,67.815,67.815) Ruotsi ENVELOPE(20.545,20.545,69.462,69.462) Hydrology and Earth System Sciences 25 3 1643 1670 |
institution |
Open Polar |
collection |
Helsingfors Universitet: HELDA – Helsingin yliopiston digitaalinen arkisto |
op_collection_id |
ftunivhelsihelda |
language |
English |
topic |
case study rivers water levels hydrology North America Canada Finland Sweden remote sensing monitoring tapaustutkimus järvet aikasarjat kaukokartoitus vedenkorkeus Inarijärvi Pohjois-Amerikka seuranta Kanada Suomi hydrologia Ruotsi Lokka Oulujärvi |
spellingShingle |
case study rivers water levels hydrology North America Canada Finland Sweden remote sensing monitoring tapaustutkimus järvet aikasarjat kaukokartoitus vedenkorkeus Inarijärvi Pohjois-Amerikka seuranta Kanada Suomi hydrologia Ruotsi Lokka Oulujärvi Shu, Song Liu, Hongxing Beck, Richard A. Frappart, Frédéric Korhonen, Johanna Lan, Minxuan Xu, Min Yang, Bo Huang, Yan Evaluation of historic and operational satellite radar altimetry missions for constructing consistent long-term lake water level records |
topic_facet |
case study rivers water levels hydrology North America Canada Finland Sweden remote sensing monitoring tapaustutkimus järvet aikasarjat kaukokartoitus vedenkorkeus Inarijärvi Pohjois-Amerikka seuranta Kanada Suomi hydrologia Ruotsi Lokka Oulujärvi |
description |
A total of 13 satellite missions have been launched since 1985, with different types of radar altimeters on board. This study intends to make a comprehensive evaluation of historic and currently operational satellite radar altimetry missions for lake water level retrieval over the same set of lakes and to develop a strategy for constructing consistent long-term water level records for inland lakes at global scale. The lake water level estimates produced by different retracking algorithms (retrackers) of the satellite missions were compared with the gauge measurements over 12 lakes in four countries. The performance of each retracker was assessed in terms of the data missing rate, the correlation coefficient r, the bias, and the root mean square error (RMSE) between the altimetry-derived lake water level estimates and the concurrent gauge measurements. The results show that the model-free retrackers (e.g., OCOG/Ice-1/Ice) outperform the model-based retrackers for most of the missions, particularly over small lakes. Among the satellite altimetry missions, Sentinel-3 gave the best results, followed by SARAL. ENVISAT has slightly better lake water level estimates than Jason-1 and Jason-2, but its data missing rate is higher. For small lakes, ERS-1 and ERS-2 missions provided more accurate lake water level estimates than the TOPEX/Poseidon mission. In contrast, for large lakes, TOPEX/Poseidon is a better option due to its lower data missing rate and shorter repeat cycle. GeoSat and GeoSat Follow-On (GFO) both have an extremely high data missing rate of lake water level estimates. Although several contemporary radar altimetry missions provide more accurate lake level estimates than GFO, GeoSat was the sole radar altimetry mission, between 1985 and 1990, that provided the lake water level estimates. With a full consideration of the performance and the operational duration, the best strategy for constructing long-term lake water level records should be a two-step bias correction and normalization procedure. In the first ... |
format |
Article in Journal/Newspaper |
author |
Shu, Song Liu, Hongxing Beck, Richard A. Frappart, Frédéric Korhonen, Johanna Lan, Minxuan Xu, Min Yang, Bo Huang, Yan |
author_facet |
Shu, Song Liu, Hongxing Beck, Richard A. Frappart, Frédéric Korhonen, Johanna Lan, Minxuan Xu, Min Yang, Bo Huang, Yan |
author_sort |
Shu, Song |
title |
Evaluation of historic and operational satellite radar altimetry missions for constructing consistent long-term lake water level records |
title_short |
Evaluation of historic and operational satellite radar altimetry missions for constructing consistent long-term lake water level records |
title_full |
Evaluation of historic and operational satellite radar altimetry missions for constructing consistent long-term lake water level records |
title_fullStr |
Evaluation of historic and operational satellite radar altimetry missions for constructing consistent long-term lake water level records |
title_full_unstemmed |
Evaluation of historic and operational satellite radar altimetry missions for constructing consistent long-term lake water level records |
title_sort |
evaluation of historic and operational satellite radar altimetry missions for constructing consistent long-term lake water level records |
publisher |
Copernicus Publications |
publishDate |
2021 |
url |
http://hdl.handle.net/10138/331602 https://doi.org/10.5194/hess-25-1643-2021 |
long_lat |
ENVELOPE(27.796,27.796,69.023,69.023) ENVELOPE(27.734,27.734,67.815,67.815) ENVELOPE(20.545,20.545,69.462,69.462) |
geographic |
Canada Inarijärvi Lokka Ruotsi |
geographic_facet |
Canada Inarijärvi Lokka Ruotsi |
genre |
Inarijärvi |
genre_facet |
Inarijärvi |
op_relation |
Hydrology and Earth System Sciences Discussions 25 1643-1670 Shu, S., Liu, H., Beck, R. A., Frappart, F., Korhonen, J., Lan, M., Xu, M., Yang, B., and Huang, Y.: Evaluation of historic and operational satellite radar altimetry missions for constructing consistent long-term lake water level records, Hydrol. Earth Syst. Sci., 25, 1643–1670, https://doi.org/10.5194/hess-25-1643-2021 https://doi.org/10.5194/hess-25-1643-2021 http://hdl.handle.net/10138/331602 |
op_rights |
CC BY 4.0 openAccess |
op_doi |
https://doi.org/10.5194/hess-25-1643-2021 |
container_title |
Hydrology and Earth System Sciences |
container_volume |
25 |
container_issue |
3 |
container_start_page |
1643 |
op_container_end_page |
1670 |
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1774719306988257280 |