Articles | Volume 16, issue 11
https://doi.org/10.5194/tc-16-4659-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-16-4659-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
04 Nov 2022
Research article |
| 04 Nov 2022
| 04 Nov 2022
New insights into the decadal variability in glacier volume of a tropical ice cap, Antisana (0°29′ S, 78°09′ W), explained by the morpho-topographic and climatic context
Rubén Basantes-Serrano
CORRESPONDING AUTHOR
Grupo de Ciencias de la Tierra y Clima, Universidad Regional
Amazónica Ikiam, Tena, Ecuador
CAOS, Observatorio del Clima, Quito, Ecuador
Antoine Rabatel
Institut des Géosciences de l'Environnement (IGE, UMR 5001), Univ. Grenoble Alpes, CNRS, IRD, Grenoble INP, 38000 Grenoble, France
Bernard Francou
Institut des Géosciences de l'Environnement (IGE, UMR 5001), Univ. Grenoble Alpes, CNRS, IRD, Grenoble INP, 38000 Grenoble, France
Christian Vincent
Institut des Géosciences de l'Environnement (IGE, UMR 5001), Univ. Grenoble Alpes, CNRS, IRD, Grenoble INP, 38000 Grenoble, France
Alvaro Soruco
Instituto de Investigaciones Geológicas y del Medio Ambiente,
Universidad Mayor de San Andrés, La Paz, Bolivia
Thomas Condom
Institut des Géosciences de l'Environnement (IGE, UMR 5001), Univ. Grenoble Alpes, CNRS, IRD, Grenoble INP, 38000 Grenoble, France
Jean Carlo Ruíz
Institut des Géosciences de l'Environnement (IGE, UMR 5001), Univ. Grenoble Alpes, CNRS, IRD, Grenoble INP, 38000 Grenoble, France
UMR 7619 METIS, Sorbonne Université, Case 105, 4 place Jussieu,
75005 Paris, France
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On June 21 2024, the village of La Bérarde, in the French Alps, was devastated by a flood destroying centuries old buildings. This study is an interdisciplinary work to decipher the causes and chronology of the event. The flood started with decadal rain falling on a thick snowpack. A lake observed on top of a glacier few days prior, had drained post event. With climate change, should we expect more similar compound events for alpine communities?
Laurane Charrier, Nathan Lioret, Fanny Brun, Amaury Dehecq, Romain Millan, Anuar Togaibekov, Andrea Walpersdorf, Diego Cusicanqui, and Antoine Rabatel
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Sub-annual glacier surface velocity derived from remote sensing images are receiving increasing attention. In the meantime, systematic seasonal errors (i.e. biases) have been reported in time series derived from optical images on various landforms, such as landslides or dunes. The extent to which such biases affect glacier velocity maps remains poorly investigated. Here, we propose characterizing the amplitude and spatial distribution of these seasonal biases.
Léon Roussel, Marie Dumont, Marion Réveillet, Delphine Six, Marin Kneib, Pierre Nabat, Kévin Fourteau, Diego Monteiro, Simon Gascoin, Emmanuel Thibert, Antoine Rabatel, Jean-Emmanuel Sicart, Mylène Bonnefoy, Luc Piard, Olivier Laarman, Bruno Jourdain, Mathieu Fructus, Matthieu Vernay, and Matthieu Lafaysse
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Saharan dust deposits frequently turn alpine glaciers orange. Mineral dust reduces snow albedo and increases snow and glaciers melt rate. Using physical modeling, we quantified the impact of dust on the Argentière Glacier over the period 2019–2022. We found that the contribution of mineral dust to the melt represents between 8 % and 16 % of Argentière Glacier summer melt. At specific locations, the impact of dust over one year can rise to an equivalent of 1.2 m of melted ice.
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Nilo Lima-Quispe, Denis Ruelland, Antoine Rabatel, Waldo Lavado-Casimiro, and Thomas Condom
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This study estimated the water balance of Lake Titicaca using an integrated modeling framework that considers natural hydrological processes and net irrigation consumption. The proposed approach was implemented at a daily scale for a period of 35 years. This framework is able to simulate lake water levels with good accuracy over a wide range of hydroclimatic conditions. The findings demonstrate that a simple representation of hydrological processes is suitable for use in poorly gauged regions.
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Alexis Caro, Thomas Condom, Antoine Rabatel, Nicolas Champollion, Nicolás García, and Freddy Saavedra
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Christian Vincent and Emmanuel Thibert
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Temperature-index models have been widely used for glacier mass projections in the future. The ability of these models to capture non-linear responses of glacier mass balance (MB) to high deviations in air temperature and solid precipitation has recently been questioned by mass balance simulations employing advanced machine-learning techniques. Here, we confirmed that temperature-index models are capable of detecting non-linear responses of glacier MB to temperature and precipitation changes.
Arthur Bayle, Bradley Z. Carlson, Anaïs Zimmer, Sophie Vallée, Antoine Rabatel, Edoardo Cremonese, Gianluca Filippa, Cédric Dentant, Christophe Randin, Andrea Mainetti, Erwan Roussel, Simon Gascoin, Dov Corenblit, and Philippe Choler
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Glacier forefields have long provided ecologists with a model to study patterns of plant succession following glacier retreat. We used remote sensing approaches to study early succession dynamics as it allows to analyze the deglaciation, colonization, and vegetation growth within a single framework. We found that the heterogeneity of early succession dynamics is deterministic and can be explained well by local environmental context. This work has been done by an international consortium.
Emilio I. Mateo, Bryan G. Mark, Robert Å. Hellström, Michel Baraer, Jeffrey M. McKenzie, Thomas Condom, Alejo Cochachín Rapre, Gilber Gonzales, Joe Quijano Gómez, and Rolando Cesai Crúz Encarnación
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This article presents detailed and comprehensive hydrological and meteorological datasets collected over the past two decades throughout the Cordillera Blanca, Peru. With four weather stations and six streamflow gauges ranging from 3738 to 4750 m above sea level, this network displays a vertical breadth of data and enables detailed research of atmospheric and hydrological processes in a tropical high mountain region.
Romina Llanos, Patricia Moreira-Turcq, Bruno Turcq, Raúl Espinoza Villar, Yizet Huaman, Thomas Condom, and Bram Willems
Biogeosciences Discuss., https://doi.org/10.5194/bg-2022-47, https://doi.org/10.5194/bg-2022-47, 2022
Manuscript not accepted for further review
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Our results highlight a marked decrease of high carbon accumulation rates in Andean peatlands over the last decades due to the diminution in melt water inflow generated by the retreat of glaciers as a consequence of regional warming. These marked changes stress the high ecological sensitivity of these peatlands, endangering their outstanding role in the regional (and even global) C cycle as large C sinks that contribute to the mitigation of global climate change.
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Short summary
We assessed the volume variation of 17 glaciers on the Antisana ice cap, near the Equator. We used aerial and satellite images for the period 1956–2016. We highlight very negative changes in 1956–1964 and 1979–1997 and slightly negative or even positive conditions in 1965–1978 and 1997–2016, the latter despite the recent increase in temperatures. Glaciers react according to regional climate variability, while local humidity and topography influence the specific behaviour of each glacier.
We assessed the volume variation of 17 glaciers on the Antisana ice cap, near the Equator. We...
