Annual to seasonal glacier mass balance in High Mountain Asia derived from Pléiades stereo images: examples from the Pamir and the Tibetan Plateau
Glaciers are crucial sources of freshwater in particular for the arid lowlands surrounding High Mountain Asia. To better constrain glacio-hydrological models, annual, or even better, seasonal information about glacier mass changes is highly beneficial. In this study, we evaluate the suitability of v...
Published in: | The Cryosphere |
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Copernicus Publications
2023
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00070667 2024-01-21T10:10:52+01:00 Annual to seasonal glacier mass balance in High Mountain Asia derived from Pléiades stereo images: examples from the Pamir and the Tibetan Plateau Falaschi, Daniel Bhattacharya, Atanu Guillet, Gregoire Huang, Lei King, Owen Mukherjee, Kriti Rastner, Philipp Yao, Tandong Bolch, Tobias 2023-12 electronic https://doi.org/10.5194/tc-17-5435-2023 https://noa.gwlb.de/receive/cop_mods_00070667 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00069009/tc-17-5435-2023.pdf https://tc.copernicus.org/articles/17/5435/2023/tc-17-5435-2023.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-17-5435-2023 https://noa.gwlb.de/receive/cop_mods_00070667 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00069009/tc-17-5435-2023.pdf https://tc.copernicus.org/articles/17/5435/2023/tc-17-5435-2023.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2023 ftnonlinearchiv https://doi.org/10.5194/tc-17-5435-2023 2023-12-25T00:22:44Z Glaciers are crucial sources of freshwater in particular for the arid lowlands surrounding High Mountain Asia. To better constrain glacio-hydrological models, annual, or even better, seasonal information about glacier mass changes is highly beneficial. In this study, we evaluate the suitability of very-high-resolution Pléiades digital elevation models (DEMs) to measure glacier mass balance at annual and seasonal scales in two regions of High Mountain Asia (Muztagh Ata in Eastern Pamirs and parts of western Nyainqêntanglha, south-central Tibetan Plateau), where recent estimates have shown contrasting glacier behaviour. The average annual mass balance in Muztagh Ata between 2019 and 2022 was −0.07 ± 0.20 m w.e. a−1, suggesting the continuation of a recent phase of slight mass loss following a prolonged period of balanced mass budgets previously observed. The mean annual mass balance in western Nyainqêntanglha was highly negative for the same period (−0.60 ± 0.15 m w.e. a−1), suggesting increased mass loss rates compared to the approximately previous 5 decades. The 2022 winter (+0.13 ± 0.24 m w.e.) and summer (−0.35 ± 0.15 m w.e.) mass budgets in Muztagh Ata and western Nyainqêntanglha (−0.03 ± 0.27 m w.e. in winter; −0.63 ± 0.07 m w.e. in summer) suggest winter- and summer-accumulation-type regimes, respectively. We support our findings by implementing the Sentinel-1-based Glacier Index to identify the firn and wet-snow areas on glaciers and characterize the accumulation type. The good match between the geodetic and Glacier Index results supports the potential of very-high-resolution Pléiades data to monitor mass balance at short timescales and improves our understanding of glacier accumulation regimes across High Mountain Asia. Article in Journal/Newspaper The Cryosphere Niedersächsisches Online-Archiv NOA The Sentinel ENVELOPE(73.317,73.317,-52.983,-52.983) The Cryosphere 17 12 5435 5458 |
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Niedersächsisches Online-Archiv NOA |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Falaschi, Daniel Bhattacharya, Atanu Guillet, Gregoire Huang, Lei King, Owen Mukherjee, Kriti Rastner, Philipp Yao, Tandong Bolch, Tobias Annual to seasonal glacier mass balance in High Mountain Asia derived from Pléiades stereo images: examples from the Pamir and the Tibetan Plateau |
topic_facet |
article Verlagsveröffentlichung |
description |
Glaciers are crucial sources of freshwater in particular for the arid lowlands surrounding High Mountain Asia. To better constrain glacio-hydrological models, annual, or even better, seasonal information about glacier mass changes is highly beneficial. In this study, we evaluate the suitability of very-high-resolution Pléiades digital elevation models (DEMs) to measure glacier mass balance at annual and seasonal scales in two regions of High Mountain Asia (Muztagh Ata in Eastern Pamirs and parts of western Nyainqêntanglha, south-central Tibetan Plateau), where recent estimates have shown contrasting glacier behaviour. The average annual mass balance in Muztagh Ata between 2019 and 2022 was −0.07 ± 0.20 m w.e. a−1, suggesting the continuation of a recent phase of slight mass loss following a prolonged period of balanced mass budgets previously observed. The mean annual mass balance in western Nyainqêntanglha was highly negative for the same period (−0.60 ± 0.15 m w.e. a−1), suggesting increased mass loss rates compared to the approximately previous 5 decades. The 2022 winter (+0.13 ± 0.24 m w.e.) and summer (−0.35 ± 0.15 m w.e.) mass budgets in Muztagh Ata and western Nyainqêntanglha (−0.03 ± 0.27 m w.e. in winter; −0.63 ± 0.07 m w.e. in summer) suggest winter- and summer-accumulation-type regimes, respectively. We support our findings by implementing the Sentinel-1-based Glacier Index to identify the firn and wet-snow areas on glaciers and characterize the accumulation type. The good match between the geodetic and Glacier Index results supports the potential of very-high-resolution Pléiades data to monitor mass balance at short timescales and improves our understanding of glacier accumulation regimes across High Mountain Asia. |
format |
Article in Journal/Newspaper |
author |
Falaschi, Daniel Bhattacharya, Atanu Guillet, Gregoire Huang, Lei King, Owen Mukherjee, Kriti Rastner, Philipp Yao, Tandong Bolch, Tobias |
author_facet |
Falaschi, Daniel Bhattacharya, Atanu Guillet, Gregoire Huang, Lei King, Owen Mukherjee, Kriti Rastner, Philipp Yao, Tandong Bolch, Tobias |
author_sort |
Falaschi, Daniel |
title |
Annual to seasonal glacier mass balance in High Mountain Asia derived from Pléiades stereo images: examples from the Pamir and the Tibetan Plateau |
title_short |
Annual to seasonal glacier mass balance in High Mountain Asia derived from Pléiades stereo images: examples from the Pamir and the Tibetan Plateau |
title_full |
Annual to seasonal glacier mass balance in High Mountain Asia derived from Pléiades stereo images: examples from the Pamir and the Tibetan Plateau |
title_fullStr |
Annual to seasonal glacier mass balance in High Mountain Asia derived from Pléiades stereo images: examples from the Pamir and the Tibetan Plateau |
title_full_unstemmed |
Annual to seasonal glacier mass balance in High Mountain Asia derived from Pléiades stereo images: examples from the Pamir and the Tibetan Plateau |
title_sort |
annual to seasonal glacier mass balance in high mountain asia derived from pléiades stereo images: examples from the pamir and the tibetan plateau |
publisher |
Copernicus Publications |
publishDate |
2023 |
url |
https://doi.org/10.5194/tc-17-5435-2023 https://noa.gwlb.de/receive/cop_mods_00070667 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00069009/tc-17-5435-2023.pdf https://tc.copernicus.org/articles/17/5435/2023/tc-17-5435-2023.pdf |
long_lat |
ENVELOPE(73.317,73.317,-52.983,-52.983) |
geographic |
The Sentinel |
geographic_facet |
The Sentinel |
genre |
The Cryosphere |
genre_facet |
The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-17-5435-2023 https://noa.gwlb.de/receive/cop_mods_00070667 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00069009/tc-17-5435-2023.pdf https://tc.copernicus.org/articles/17/5435/2023/tc-17-5435-2023.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-17-5435-2023 |
container_title |
The Cryosphere |
container_volume |
17 |
container_issue |
12 |
container_start_page |
5435 |
op_container_end_page |
5458 |
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1788702320342597632 |