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...
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ftconicet:oai:ri.conicet.gov.ar:11336/233640 2024-05-19T07:49:25+00:00 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 Bolch, Tobias Yao, Tandong application/pdf http://hdl.handle.net/11336/233640 eng eng Copernicus Publications info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-2022-264 info:eu-repo/semantics/altIdentifier/url/https://tc.copernicus.org/articles/17/5435/2023/ http://hdl.handle.net/11336/233640 Falaschi, Daniel; Bhattacharya, Atanu; Guillet, Gregoire; Huang, Lei; King, Owen; et al.; Annual to seasonal glacier mass balance in High Mountain Asia derived from Pléiades stereo images: examples from the Pamir and the Tibetan Plateau; Copernicus Publications; The Cryosphere Discussions; 17; 12; 2-2023; 1-28 1994-0416 CONICET Digital CONICET info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/2.5/ar/ glacier mass High Mountain Asia Tibetan Plateau Pléiades https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.5194/tc-2022-264 2024-04-25T23:38:07Z 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. Fil: Falaschi, Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias ... Article in Journal/Newspaper The Cryosphere The Cryosphere Discussions CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
glacier mass High Mountain Asia Tibetan Plateau Pléiades https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
spellingShingle |
glacier mass High Mountain Asia Tibetan Plateau Pléiades https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 Falaschi, Daniel Bhattacharya, Atanu Guillet, Gregoire Huang, Lei King, Owen Mukherjee, Kriti Rastner, Philipp Bolch, Tobias Yao, Tandong 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 |
glacier mass High Mountain Asia Tibetan Plateau Pléiades https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
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. Fil: Falaschi, Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias ... |
format |
Article in Journal/Newspaper |
author |
Falaschi, Daniel Bhattacharya, Atanu Guillet, Gregoire Huang, Lei King, Owen Mukherjee, Kriti Rastner, Philipp Bolch, Tobias Yao, Tandong |
author_facet |
Falaschi, Daniel Bhattacharya, Atanu Guillet, Gregoire Huang, Lei King, Owen Mukherjee, Kriti Rastner, Philipp Bolch, Tobias Yao, Tandong |
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 |
url |
http://hdl.handle.net/11336/233640 |
genre |
The Cryosphere The Cryosphere Discussions |
genre_facet |
The Cryosphere The Cryosphere Discussions |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/tc-2022-264 info:eu-repo/semantics/altIdentifier/url/https://tc.copernicus.org/articles/17/5435/2023/ http://hdl.handle.net/11336/233640 Falaschi, Daniel; Bhattacharya, Atanu; Guillet, Gregoire; Huang, Lei; King, Owen; et al.; Annual to seasonal glacier mass balance in High Mountain Asia derived from Pléiades stereo images: examples from the Pamir and the Tibetan Plateau; Copernicus Publications; The Cryosphere Discussions; 17; 12; 2-2023; 1-28 1994-0416 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/2.5/ar/ |
op_doi |
https://doi.org/10.5194/tc-2022-264 |
_version_ |
1799467923827326976 |