Articles | Volume 16, issue 5
https://doi.org/10.5194/tc-16-1779-2022
© 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-16-1779-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Brief communication
| 
10 May 2022
Brief communication |
| 10 May 2022
Brief communication: A framework to classify glaciers for water resource evaluation and management in the Southern Andes
Centro de Estudios Avanzados en Zonas Áridas (CEAZA),
ULS – Campus Andrés Bello, Raúl Bitrán 1305, La Serena, Chile
Shelley MacDonell
Centro de Estudios Avanzados en Zonas Áridas (CEAZA),
ULS – Campus Andrés Bello, Raúl Bitrán 1305, La Serena, Chile
Waterways Centre for Freshwater Research, Lincoln University and the
University of Canterbury, Private Bag 4800, Ōtautahi / Christchurch, New Zealand
Related authors
Giulia de Pasquale, Rémi Valois, Nicole Schaffer, and Shelley MacDonell
The Cryosphere, 16, 1579–1596, https://doi.org/10.5194/tc-16-1579-2022, https://doi.org/10.5194/tc-16-1579-2022, 2022
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We presented a geophysical study of one intact and one relict rock glacier in semi-arid Chile. The interpretation of the collected data through different methods identifies geophysical signature differences between the two rock glaciers and characterizes their subsurface structure and composition. This is of great importance because of rock glaciers' relevant role in freshwater production, transfer and storage, especially in this area of increasing human pressure and high rainfall variability.
Marion Réveillet, Shelley MacDonell, Simon Gascoin, Christophe Kinnard, Stef Lhermitte, and Nicole Schaffer
The Cryosphere, 14, 147–163, https://doi.org/10.5194/tc-14-147-2020, https://doi.org/10.5194/tc-14-147-2020, 2020
Álvaro Ayala, Simone Schauwecker, and Shelley MacDonell
Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hess-2023-23, https://doi.org/10.5194/hess-2023-23, 2023
Preprint under review for HESS
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As the climate of the semiarid Andes is very dry, a large fraction of the seasonal snowpack is lost to the atmosphere as sublimation. We suggest that snowmelt runoff originates from specific areas that we define as snowmelt hotspots. We estimate that snowmelt hotspots produce half of the snowmelt runoff in a small study catchment, but they correspond to about a quarter of the total area. Snowmelt hotspots might be important for groundwater recharge, rock glaciers and mountain peatlands.
Jonathan P. Conway, Jakob Abermann, Liss M. Andreassen, Mohd Farooq Azam, Nicolas J. Cullen, Noel Fitzpatrick, Rianne H. Giesen, Kirsty Langley, Shelley MacDonell, Thomas Mölg, Valentina Radić, Carleen H. Reijmer, and Jean-Emmanuel Sicart
The Cryosphere, 16, 3331–3356, https://doi.org/10.5194/tc-16-3331-2022, https://doi.org/10.5194/tc-16-3331-2022, 2022
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We used data from automatic weather stations on 16 glaciers to show how clouds influence glacier melt in different climates around the world. We found surface melt was always more frequent when it was cloudy but was not universally faster or slower than under clear-sky conditions. Also, air temperature was related to clouds in opposite ways in different climates – warmer with clouds in cold climates and vice versa. These results will help us improve how we model past and future glacier melt.
Giulia de Pasquale, Rémi Valois, Nicole Schaffer, and Shelley MacDonell
The Cryosphere, 16, 1579–1596, https://doi.org/10.5194/tc-16-1579-2022, https://doi.org/10.5194/tc-16-1579-2022, 2022
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We presented a geophysical study of one intact and one relict rock glacier in semi-arid Chile. The interpretation of the collected data through different methods identifies geophysical signature differences between the two rock glaciers and characterizes their subsurface structure and composition. This is of great importance because of rock glaciers' relevant role in freshwater production, transfer and storage, especially in this area of increasing human pressure and high rainfall variability.
Benjamin Aubrey Robson, Shelley MacDonell, Álvaro Ayala, Tobias Bolch, Pål Ringkjøb Nielsen, and Sebastián Vivero
The Cryosphere, 16, 647–665, https://doi.org/10.5194/tc-16-647-2022, https://doi.org/10.5194/tc-16-647-2022, 2022
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This work uses satellite and aerial data to study glaciers and rock glacier changes in La Laguna catchment within the semi-arid Andes of Chile, where ice melt is an important factor in river flow. The results show the rate of ice loss of Tapado Glacier has been increasing since the 1950s, which possibly relates to a dryer, warmer climate over the previous decades. Several rock glaciers show high surface velocities and elevation changes between 2012 and 2020, indicating they may be ice-rich.
Annelies Voordendag, Marion Réveillet, Shelley MacDonell, and Stef Lhermitte
The Cryosphere, 15, 4241–4259, https://doi.org/10.5194/tc-15-4241-2021, https://doi.org/10.5194/tc-15-4241-2021, 2021
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The sensitivity of two snow models (SNOWPACK and SnowModel) to various parameterizations and atmospheric forcing biases is assessed in the semi-arid Andes of Chile in winter 2017. Models show that sublimation is a main driver of ablation and that its relative contribution to total ablation is highly sensitive to the selected albedo parameterization and snow roughness length. The forcing and parameterizations are more important than the model choice, despite differences in physical complexity.
Marion Réveillet, Shelley MacDonell, Simon Gascoin, Christophe Kinnard, Stef Lhermitte, and Nicole Schaffer
The Cryosphere, 14, 147–163, https://doi.org/10.5194/tc-14-147-2020, https://doi.org/10.5194/tc-14-147-2020, 2020
Francisco Fernandoy, Dieter Tetzner, Hanno Meyer, Guisella Gacitúa, Kirstin Hoffmann, Ulrike Falk, Fabrice Lambert, and Shelley MacDonell
The Cryosphere, 12, 1069–1090, https://doi.org/10.5194/tc-12-1069-2018, https://doi.org/10.5194/tc-12-1069-2018, 2018
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Through the geochemical analysis of the surface snow of a glacier at the northern tip of the Antarctic Peninsula, we aimed to investigate how atmosphere and ocean conditions of the surrounding region are varying under the present climate scenario. We found that meteorological conditions strongly depend on the extension of sea ice. Our results show a slight cooling of the surface air during the last decade at this site. However, the general warming tendency for the region is still on-going.
Lindsey I. Nicholson, Michał Pętlicki, Ben Partan, and Shelley MacDonell
The Cryosphere, 10, 1897–1913, https://doi.org/10.5194/tc-10-1897-2016, https://doi.org/10.5194/tc-10-1897-2016, 2016
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An Xbox Kinect sensor was used as a close-range surface scanner to produce the first accurate 3D surface models of spikes of snow and ice (known as penitentes) that develop in cold, dry, sunny conditions. The data collected show how penitentes develop over time and how they affect the surface roughness of a glacier. These surface models are useful inputs to modelling studies of how penitentes alter energy exchanges between the atmosphere and the surface and how this affects meltwater production.
S. MacDonell, C. Kinnard, T. Mölg, L. Nicholson, and J. Abermann
The Cryosphere, 7, 1513–1526, https://doi.org/10.5194/tc-7-1513-2013, https://doi.org/10.5194/tc-7-1513-2013, 2013
Related subject area
Discipline: Glaciers | Subject: Alpine Glaciers
Consistent histories of anthropogenic Western European air pollution preserved in different Alpine ice cores
Brief communication: Nonlinear sensitivity of glacier-mass balance attested by temperature-index models
Halving of Swiss glacier volume since 1931 observed from terrestrial image photogrammetry
Land- to lake-terminating transition triggers dynamic thinning of a Bhutanese glacier
Strong acceleration of glacier area loss in the Greater Caucasus between 2000 and 2020
Ice volume and basal topography estimation using geostatistical methods and ground-penetrating radar measurements: application to the Tsanfleuron and Scex Rouge glaciers, Swiss Alps
Significant mass loss in the accumulation area of the Adamello glacier indicated by the chronology of a 46 m ice core
Brief communication: Do 1.0, 1.5, or 2.0 °C matter for the future evolution of Alpine glaciers?
A new automatic approach for extracting glacier centerlines based on Euclidean allocation
Spatially and temporally resolved ice loss in High Mountain Asia and the Gulf of Alaska observed by CryoSat-2 swath altimetry between 2010 and 2019
Crystallographic analysis of temperate ice on Rhonegletscher, Swiss Alps
Debris cover and the thinning of Kennicott Glacier, Alaska: in situ measurements, automated ice cliff delineation and distributed melt estimates
Small-scale spatial variability in bare-ice reflectance at Jamtalferner, Austria
Numerical modeling of the dynamics of the Mer de Glace glacier, French Alps: comparison with past observations and forecasting of near-future evolution
Monitoring the seasonal changes of an englacial conduit network using repeated ground-penetrating radar measurements
Possible biases in scaling-based estimates of glacier change: a case study in the Himalaya
Spatial and temporal variations in glacier aerodynamic surface roughness during the melting season, as estimated at the August-one ice cap, Qilian mountains, China
Strong changes in englacial temperatures despite insignificant changes in ice thickness at Dôme du Goûter glacier (Mont Blanc area)
Supra-glacial debris cover changes in the Greater Caucasus from 1986 to 2014
Glacier thickness estimations of alpine glaciers using data and modeling constraints
Unravelling the evolution of Zmuttgletscher and its debris cover since the end of the Little Ice Age
Modelling the future evolution of glaciers in the European Alps under the EURO-CORDEX RCM ensemble
Robust uncertainty assessment of the spatio-temporal transferability of glacier mass and energy balance models
Impacts of topographic shading on direct solar radiation for valley glaciers in complex topography
19th century glacier retreat in the Alps preceded the emergence of industrial black carbon deposition on high-alpine glaciers
Iron oxides in the cryoconite of glaciers on the Tibetan Plateau: abundance, speciation and implications
Numerical reconstructions of the flow and basal conditions of the Rhine glacier, European Central Alps, at the Last Glacial Maximum
Anja Eichler, Michel Legrand, Theo M. Jenk, Susanne Preunkert, Camilla Andersson, Sabine Eckhardt, Magnuz Engardt, Andreas Plach, and Margit Schwikowski
The Cryosphere Discuss., https://doi.org/10.5194/tc-2022-208, https://doi.org/10.5194/tc-2022-208, 2022
Revised manuscript accepted for TC
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We investigate, how a 250-years history of the emission of air pollutants (major inorganic aerosol constituents, black carbon, and trace species) is preserved in different ice cores from various sites in the European Alps. Our results demonstrate that the individual ice-core records provide a spatial representative signal of anthropogenic pollution from Western European countries and are essential to constrain model data of air pollutants in this region.
Christian Vincent and Emmanuel Thibert
The Cryosphere Discuss., https://doi.org/10.5194/tc-2022-210, https://doi.org/10.5194/tc-2022-210, 2022
Revised manuscript accepted for TC
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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 nonlinear 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 nonlinear responses of glacier MB to temperature and precipitation changes.
Erik Schytt Mannerfelt, Amaury Dehecq, Romain Hugonnet, Elias Hodel, Matthias Huss, Andreas Bauder, and Daniel Farinotti
The Cryosphere, 16, 3249–3268, https://doi.org/10.5194/tc-16-3249-2022, https://doi.org/10.5194/tc-16-3249-2022, 2022
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How glaciers have responded to climate change over the last 20 years is well-known, but earlier data are much more scarce. We change this in Switzerland by using 22 000 photographs taken from mountain tops between the world wars and find a halving of Swiss glacier volume since 1931. This was done through new automated processing techniques that we created. The data are interesting for more than just glaciers, such as mapping forest changes, landslides, and human impacts on the terrain.
Yota Sato, Koji Fujita, Hiroshi Inoue, Akiko Sakai, and Karma
The Cryosphere, 16, 2643–2654, https://doi.org/10.5194/tc-16-2643-2022, https://doi.org/10.5194/tc-16-2643-2022, 2022
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We investigate fluctuations in Bhutanese lake-terminating glaciers focusing on the dynamics change before and after proglacial lake formation at Thorthormi Glacier (TG) based on photogrammetry, satellite, and GPS surveys. The thinning rate of TG became double compared to before proglacial lake formation, and the flow velocity has also sped up considerably. Those changes would be due to the reduction in longitudinal ice compression by the detachment of the glacier terminus from the end moraine.
Levan G. Tielidze, Gennady A. Nosenko, Tatiana E. Khromova, and Frank Paul
The Cryosphere, 16, 489–504, https://doi.org/10.5194/tc-16-489-2022, https://doi.org/10.5194/tc-16-489-2022, 2022
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The new Caucasus glacier inventory derived from manual delineation of glacier outlines based on medium-resolution (Landsat, Sentinel) and high-resolution (SPOT) satellite imagery shows the accelerated glacier area loss over the last 2 decades (2000–2020). This new glacier inventory will improve our understanding of climate change impacts at a regional scale and support related modelling studies by providing high-quality validation data.
Alexis Neven, Valentin Dall'Alba, Przemysław Juda, Julien Straubhaar, and Philippe Renard
The Cryosphere, 15, 5169–5186, https://doi.org/10.5194/tc-15-5169-2021, https://doi.org/10.5194/tc-15-5169-2021, 2021
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We present and compare different geostatistical methods for underglacial bedrock interpolation. Variogram-based interpolations are compared with a multipoint statistics approach on both test cases and real glaciers. Using the modeled bedrock, the ice volume for the Scex Rouge and Tsanfleuron glaciers (Swiss Alps) was estimated to be 113.9 ± 1.6 million cubic meters. Complex karstic geomorphological features are reproduced and can be used to improve the precision of underglacial flow estimation.
Daniela Festi, Margit Schwikowski, Valter Maggi, Klaus Oeggl, and Theo Manuel Jenk
The Cryosphere, 15, 4135–4143, https://doi.org/10.5194/tc-15-4135-2021, https://doi.org/10.5194/tc-15-4135-2021, 2021
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In our study we dated a 46 m deep ice core retrieved from the Adamello glacier (Central Italian Alps). We obtained a timescale combining the results of radionuclides 210Pb and 137Cs with annual layer counting derived from pollen and refractory black carbon concentrations. Our results indicate that the surface of the glacier is older than the drilling date of 2016 by about 20 years, therefore revealing that the glacier is at high risk of collapsing under current climate warming conditions.
Loris Compagno, Sarah Eggs, Matthias Huss, Harry Zekollari, and Daniel Farinotti
The Cryosphere, 15, 2593–2599, https://doi.org/10.5194/tc-15-2593-2021, https://doi.org/10.5194/tc-15-2593-2021, 2021
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Recently, discussions have focused on the difference in limiting the increase in global average temperatures to below 1.0, 1.5, or 2.0 °C compared to preindustrial levels. Here, we assess the impacts that such different scenarios would have on both the future evolution of glaciers in the European Alps and the water resources they provide. Our results show that the different temperature targets have important implications for the changes predicted until 2100.
Dahong Zhang, Xiaojun Yao, Hongyu Duan, Shiyin Liu, Wanqin Guo, Meiping Sun, and Dazhi Li
The Cryosphere, 15, 1955–1973, https://doi.org/10.5194/tc-15-1955-2021, https://doi.org/10.5194/tc-15-1955-2021, 2021
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Glacier centerlines are crucial input for many glaciological applications. We propose a new algorithm to derive glacier centerlines and implement the corresponding program in Python language. Application of this method to 48 571 glaciers in the second Chinese glacier inventory automatically yielded the corresponding glacier centerlines with an average computing time of 20.96 s, a success rate of 100 % and a comprehensive accuracy of 94.34 %.
Livia Jakob, Noel Gourmelen, Martin Ewart, and Stephen Plummer
The Cryosphere, 15, 1845–1862, https://doi.org/10.5194/tc-15-1845-2021, https://doi.org/10.5194/tc-15-1845-2021, 2021
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Glaciers and ice caps are currently the largest contributor to sea level rise. Global monitoring of these regions is a challenging task, and significant differences remain between current estimates. This study looks at glacier changes in High Mountain Asia and the Gulf of Alaska using a new technique, which for the first time makes the use of satellite radar altimetry for mapping ice mass loss over mountain glacier regions possible.
Sebastian Hellmann, Johanna Kerch, Ilka Weikusat, Andreas Bauder, Melchior Grab, Guillaume Jouvet, Margit Schwikowski, and Hansruedi Maurer
The Cryosphere, 15, 677–694, https://doi.org/10.5194/tc-15-677-2021, https://doi.org/10.5194/tc-15-677-2021, 2021
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We analyse the orientation of ice crystals in an Alpine glacier and compare this orientation with the ice flow direction. We found that the crystals orient in the direction of the largest stress which is in the flow direction in the upper parts of the glacier and in the vertical direction for deeper zones of the glacier. The grains cluster around this maximum stress direction, in particular four-point maxima, most likely as a result of recrystallisation under relatively warm conditions.
Leif S. Anderson, William H. Armstrong, Robert S. Anderson, and Pascal Buri
The Cryosphere, 15, 265–282, https://doi.org/10.5194/tc-15-265-2021, https://doi.org/10.5194/tc-15-265-2021, 2021
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Many glaciers are thinning rapidly beneath debris cover (loose rock) that reduces melt, including Kennicott Glacier in Alaska. This contradiction has been explained by melt hotspots, such as ice cliffs, scattered within the debris cover. However, at Kennicott Glacier declining ice flow explains the rapid thinning. Through this study, Kennicott Glacier is now the first glacier in Alaska, and the largest glacier globally, where melt across its debris-covered tongue has been rigorously quantified.
Lea Hartl, Lucia Felbauer, Gabriele Schwaizer, and Andrea Fischer
The Cryosphere, 14, 4063–4081, https://doi.org/10.5194/tc-14-4063-2020, https://doi.org/10.5194/tc-14-4063-2020, 2020
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When glaciers become snow-free in summer, darker glacier ice is exposed. The ice surface is darker than snow and absorbs more radiation, which increases ice melt. We measured how much radiation is reflected at different wavelengths in the ablation zone of Jamtalferner, Austria. Due to impurities and water on the ice surface there are large variations in reflectance. Landsat 8 and Sentinel-2 surface reflectance products do not capture the full range of reflectance found on the glacier.
Vincent Peyaud, Coline Bouchayer, Olivier Gagliardini, Christian Vincent, Fabien Gillet-Chaulet, Delphine Six, and Olivier Laarman
The Cryosphere, 14, 3979–3994, https://doi.org/10.5194/tc-14-3979-2020, https://doi.org/10.5194/tc-14-3979-2020, 2020
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Alpine glaciers are retreating at an accelerating rate in a warming climate. Numerical models allow us to study and anticipate these changes, but the performance of a model is difficult to evaluate. So we compared an ice flow model with the long dataset of observations obtained between 1979 and 2015 on Mer de Glace (Mont Blanc area). The model accurately reconstructs the past evolution of the glacier. We simulate the future evolution of Mer de Glace; it could retreat by 2 to 6 km by 2050.
Gregory Church, Melchior Grab, Cédric Schmelzbach, Andreas Bauder, and Hansruedi Maurer
The Cryosphere, 14, 3269–3286, https://doi.org/10.5194/tc-14-3269-2020, https://doi.org/10.5194/tc-14-3269-2020, 2020
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In this field study, we repeated ground-penetrating radar measurements over an active englacial channel network that transports meltwater through the glacier. We successfully imaged the englacial meltwater pathway and were able to delimitate the channel's shape. Meltwater from the glacier can impact the glacier's dynamics if it reaches the ice–bed interface, and therefore monitoring these englacial drainage networks is important to understand how these networks behave throughout a season.
Argha Banerjee, Disha Patil, and Ajinkya Jadhav
The Cryosphere, 14, 3235–3247, https://doi.org/10.5194/tc-14-3235-2020, https://doi.org/10.5194/tc-14-3235-2020, 2020
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Simple models of glacier dynamics based on volume–area scaling underestimate climate sensitivity and response time of glaciers. Consequently, they may predict a faster response and a smaller long-term glacier loss. These biases in scaling models are established theoretically and are analysed in detail by simulating the step response of a set of 703 Himalayan glaciers separately by three different models: a scaling model, a 2-D shallow-ice approximation model, and a linear-response model.
Junfeng Liu, Rensheng Chen, and Chuntan Han
The Cryosphere, 14, 967–984, https://doi.org/10.5194/tc-14-967-2020, https://doi.org/10.5194/tc-14-967-2020, 2020
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Glacier surface roughness during melting season was observed by manual and automatic photogrammetry. Surface roughness was larger at the snow and ice transition zone than in fully snow- or ice-covered areas. Persistent snowfall and rainfall both reduce surface roughness. High or rising turbulent heat as a component of surface energy balance tended to produce a smooth ice surface; low or decreasing turbulent heat tended to produce a rougher surface.
Christian Vincent, Adrien Gilbert, Bruno Jourdain, Luc Piard, Patrick Ginot, Vladimir Mikhalenko, Philippe Possenti, Emmanuel Le Meur, Olivier Laarman, and Delphine Six
The Cryosphere, 14, 925–934, https://doi.org/10.5194/tc-14-925-2020, https://doi.org/10.5194/tc-14-925-2020, 2020
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We observed very low glacier thickness changes over the last decades at very-high-elevation glaciated areas on Mont Blanc. Conversely, measurements performed in deep boreholes since 1994 reveal strong changes in englacial temperature reaching 1.5 °C at a depth of 50 m. We conclude that at such very high elevations, current changes in climate do not lead to visible changes in glacier thickness but cause invisible changes within the glacier in terms of englacial temperatures.
Levan G. Tielidze, Tobias Bolch, Roger D. Wheate, Stanislav S. Kutuzov, Ivan I. Lavrentiev, and Michael Zemp
The Cryosphere, 14, 585–598, https://doi.org/10.5194/tc-14-585-2020, https://doi.org/10.5194/tc-14-585-2020, 2020
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We present data of supra-glacial debris cover for 659 glaciers across the Greater Caucasus based on satellite images from the years 1986, 2000 and 2014. We combined semi-automated methods for mapping the clean ice with manual digitization of debris-covered glacier parts and calculated supra-glacial debris-covered area as the residual between these two maps. The distribution of the supra-glacial debris cover differs between northern and southern and between western, central and eastern Caucasus.
Lisbeth Langhammer, Melchior Grab, Andreas Bauder, and Hansruedi Maurer
The Cryosphere, 13, 2189–2202, https://doi.org/10.5194/tc-13-2189-2019, https://doi.org/10.5194/tc-13-2189-2019, 2019
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We have developed a novel procedure for glacier thickness estimations that combines traditional glaciological modeling constraints with ground-truth data, for example, those obtained with ground-penetrating radar (GPR) measurements. This procedure is very useful for determining ice volume when only limited data are available. Furthermore, we outline a strategy for acquiring GPR data on glaciers, such that the cost/benefit ratio is optimized.
Nico Mölg, Tobias Bolch, Andrea Walter, and Andreas Vieli
The Cryosphere, 13, 1889–1909, https://doi.org/10.5194/tc-13-1889-2019, https://doi.org/10.5194/tc-13-1889-2019, 2019
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Debris can partly protect glaciers from melting. But many debris-covered glaciers change similar to debris-free glaciers. To better understand the debris influence we investigated 150 years of evolution of Zmutt Glacier in Switzerland. We found an increase in debris extent over time and a link to glacier flow velocity changes. We also found an influence of debris on the melt locally, but only a small volume change reduction over the whole glacier, also because of the influence of ice cliffs.
Harry Zekollari, Matthias Huss, and Daniel Farinotti
The Cryosphere, 13, 1125–1146, https://doi.org/10.5194/tc-13-1125-2019, https://doi.org/10.5194/tc-13-1125-2019, 2019
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Glaciers in the European Alps play an important role in the hydrological cycle, act as a source for hydroelectricity and have a large touristic importance. We model the future evolution of all glaciers in the Alps with a novel model that combines both ice flow and melt processes. We find that under a limited warming scenario about one-third of the present-day ice volume will still be present by the end of the century, while under strong warming more than 90 % of the volume will be lost by 2100.
Tobias Zolles, Fabien Maussion, Stephan Peter Galos, Wolfgang Gurgiser, and Lindsey Nicholson
The Cryosphere, 13, 469–489, https://doi.org/10.5194/tc-13-469-2019, https://doi.org/10.5194/tc-13-469-2019, 2019
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A mass and energy balance model was subjected to sensitivity and uncertainty analysis on two different Alpine glaciers. The global sensitivity analysis allowed for a mass balance measurement independent assessment of the model sensitivity and functioned as a reduction of the model free parameter space. A novel approach of a multi-objective optimization estimates the uncertainty of the simulated mass balance and the energy fluxes. The final model uncertainty is up to 1300 kg m−3 per year.
Matthew Olson and Summer Rupper
The Cryosphere, 13, 29–40, https://doi.org/10.5194/tc-13-29-2019, https://doi.org/10.5194/tc-13-29-2019, 2019
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Solar radiation is the largest energy input for most alpine glaciers. However, many models oversimplify the influence of topographic shading. Also, no systematic studies have explored the variable impact of shading on glacier ice. We find that shading can significantly impact modeled solar radiation, particularly at low elevations, at high latitudes, and for glaciers with a north/south orientation. Excluding the effects of shading will overestimate modeled solar radiation for alpine glaciers.
Michael Sigl, Nerilie J. Abram, Jacopo Gabrieli, Theo M. Jenk, Dimitri Osmont, and Margit Schwikowski
The Cryosphere, 12, 3311–3331, https://doi.org/10.5194/tc-12-3311-2018, https://doi.org/10.5194/tc-12-3311-2018, 2018
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The fast retreat of Alpine glaciers since the mid-19th century documented in photographs is used as a symbol for the human impact on global climate, yet the key driving forces remain elusive. Here we argue that not industrial soot but volcanic eruptions were responsible for an apparently accelerated deglaciation starting in the 1850s. Our findings support a negligible role of human activity in forcing glacier recession at the end of the Little Ice Age, highlighting the role of natural drivers.
Zhiyuan Cong, Shaopeng Gao, Wancang Zhao, Xin Wang, Guangming Wu, Yulan Zhang, Shichang Kang, Yongqin Liu, and Junfeng Ji
The Cryosphere, 12, 3177–3186, https://doi.org/10.5194/tc-12-3177-2018, https://doi.org/10.5194/tc-12-3177-2018, 2018
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Cryoconites from glaciers on the Tibetan Plateau and surrounding area were studied for iron oxides. We found that goethite is the predominant iron oxide form. Using the abundance, speciation and optical properties of iron oxides, the total light absorption was quantitatively attributed to goethite, hematite, black carbon and organic matter. Such findings are essential to understand the relative significance of anthropogenic and natural impacts.
Denis Cohen, Fabien Gillet-Chaulet, Wilfried Haeberli, Horst Machguth, and Urs H. Fischer
The Cryosphere, 12, 2515–2544, https://doi.org/10.5194/tc-12-2515-2018, https://doi.org/10.5194/tc-12-2515-2018, 2018
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As part of an integrative study about the safety of repositories for radioactive waste under ice age conditions in Switzerland, we modeled the flow of ice of the Rhine glacier at the Last Glacial Maximum to determine conditions at the ice–bed interface. Results indicate that portions of the ice lobes were at the melting temperature and ice was sliding, two conditions necessary for erosion by glacier. Conditions at the bed of the ice lobes were affected by climate and also by topography.
Cited articles
Ayala, A., Pellicciotti, F., MacDonell, S., McPhee, J., Vivero, S., Campos,
C., and Egli, P.: Modelling the hydrological response of debris-free and
debris-covered glaciers to present climatic conditions in the semiarid Andes
of central Chile, Hydrol. Process., 30, 4036–4058,
https://doi.org/10.1002/hyp.10971, 2016.
Azócar, G. F. and Brenning, A.: Hydrological and geomorphological
significance of rock glaciers in the Dry Andes, Chile (27–33∘ S),
Permafrost Periglac., 21, 42–53, https://doi.org/10.1002/ppp.669, 2010.
Barcaza, G., Nussbaumer, S. U., Tapia, G., Valdés, J., García, J.,
Videla, Y., Albornoz, A., and Arias, V.: Glacier inventory and recent glacier
variations in the Andes of Chile, South America, Ann. Glaciol., 58,
166–180, https://doi.org/10.1017/aog.2017.28, 2017.
Barraza, F., Lambert, F., MacDonell, S., Sinclair, K., Fernandoy, F., and
Jorquera, H.: Major atmospheric particulate matter sources for glaciers in
Coquimbo Region, Chile, Environ. Sci. Pollut. Res., 28, 36817–36827,
https://doi.org/10.1007/s11356-021-12933-7, 2021.
Bonnaventure, P. P. and Lamoureux, S. F.: The active layer: A conceptual
review of monitoring, modelling techniques and changes in a warming climate,
Prog. Phys. Geogr., 37, 352–376, https://doi.org/10.1177/0309133313478314, 2013.
Bosson, J. B., Huss, M., and Osipova, E.: Disappearing World Heritage
Glaciers as a Keystone of Nature Conservation in a Changing Climate, Earth's
Future, 7, 469–479, https://doi.org/10.1029/2018EF001139, 2019.
Braun, M. H., Malz, P., Sommer, C., Farías-Barahona, D., Sauter, T.,
Casassa, G., Soruco, A., Skvarca, P., and Seehaus, T. C.: Constraining
glacier elevation and mass changes in South America, Nat. Clim. Change, 9,
130–136, https://doi.org/10.1038/s41558-018-0375-7, 2019.
Brenning, A. and Azócar, G. F.: Minería y glaciares rocosos:
impactos, Rev. Geogr. Norte Gd., 47, 143–158, 2010.
Burger, F., Ayala, A., Farias, D., Shaw, T. E., MacDonell, S., Brock, B.,
McPhee, J., and Pellicciotti, F.: Interannual variability in glacier
contribution to runoff from a high-elevation Andean catchment: understanding
the role of debris cover in glacier hydrology, Hydrol. Process., 33,
214–229, https://doi.org/10.1002/hyp.13354, 2019.
CECS: Estrategia Nacional de Glaciares, Estudios Anexos, S.I.T. No 205, Dirección General de Aguas (DGA), Ministerio de Obras Públicas, http://www.glaciologia.cl/estrategianacional.pdf (last access: 5 April 2022),
2009.
Cogley, J. G., Hock, R., Rasmussen, L. A., Arendt, A. A., Bauder, A.,
Braithwaite, R. J., Jansson, P., Kaser, G., Moller, M., Nicholson, L., and
Zemp, M.: Glossary of Glacier Mass Balance and Related Terms, IHP-VII
Technical Documents in Hydrology No. 86, IACS Contribution No. 2,
UNESCO-IHP, Paris, https://cryosphericsciences.org/publications/glossary-mass-balance/ (last access: 5 April 2022), 2011.
Croce, F. A. and Milana, J. P.: Internal structure and behaviour of a rock glacier in the arid Andes of Argentina, Permafrost Periglac., 13, 289–299, https://doi.org/10.1002/ppp.431, 2002.
DGA: Atlas del Agua, Chile 2016, Dirección General de Aguas (DGA),
Ministerio de Obras Publicos, Santiago, Chile, http://www.dga.cl/atlasdelagua/Paginas/default.aspx (last access: 1 November 2017),
2016.
Ferguson, J. C. and Vieli, A.: Modelling steady states and the transient response of debris-covered glaciers, The Cryosphere, 15, 3377–3399, https://doi.org/10.5194/tc-15-3377-2021, 2021.
Ferrando, F.: Glaciar Pirámide: Características y evolución
reciente de un glaciar cubierto. Evidencias del cambio climático,
Investig. Geográficas Chile, 44, 57–74,
https://doi.org/10.5354/0719-5370.2012.26409, 2012.
García, A., Ulloa, C., Amigo, G., Milana, J. P., and Medina, C.: An
inventory of cryospheric landforms in the arid diagonal of South America
(high Central Andes, Atacama region, Chile), Quatern. Int., 438, 4–19,
https://doi.org/10.1016/j.quaint.2017.04.033, 2017.
Gardelle, J., Berthier, E., Arnaud, Y., and Kääb, A.: Region-wide glacier mass balances over the Pamir-Karakoram-Himalaya during 1999–2011, Cryosphere, 7, 1263–1286, https://doi.org/10.5194/tc-7-1263-2013, 2013.
Gobierno de Argentina: Régimen de Presupuestos Mínimos para la
Preservación de los Glaciares y del Ambiente Periglacial (ley 26.639),
https://www.argentina.gob.ar/normativa/nacional/ley-26639-174117/texto (last access: 23 November 2021), 2010.
Halla, C., Blöthe, J. H., Tapia Baldis, C., Trombotto Liaudat, D., Hilbich, C., Hauck, C., and Schrott, L.: Ice content and interannual water storage changes of an active rock glacier in the dry Andes of Argentina, The Cryosphere, 15, 1187–1213, https://doi.org/10.5194/tc-15-1187-2021, 2021.
Herreid, S. and Pellicciotti, F.: The state of rock debris covering Earth's
glaciers, Nat. Geosci., 13, 621–627, https://doi.org/10.1038/s41561-020-0615-0, 2020.
Herrera Perez, J. and Segovia, A.: Ley de Protección de Glaciares: el
devenir de un conflicto socioambiental, Investig. Geográficas, 58,
119, https://doi.org/10.5354/0719-5370.2019.52214, 2019.
Hugonnet, R., McNabb, R., Berthier, E., Menounos, B., Nuth, C., Girod, L.,
Farinotti, D., Huss, M., Dussaillant, I., Brun, F., and Kääb, A.:
Accelerated global glacier mass loss in the early twenty-first century,
Nature, 592, 726–731, https://doi.org/10.1038/s41586-021-03436-z, 2021.
Huss, M. and Hock, R.: Global-scale hydrological response to future glacier
mass loss, Nat. Clim. Change, 8, 135–140, https://doi.org/10.1038/s41558-017-0049-x,
2018.
IANIGLA-CONICET: Inventario Nacional de Glaciares y Ambiente Periglacial:
Plan de actualización, Instituto Argentino de Nivología,
Glaciología y Ciencias Ambientales y Consejo Nacional de
Investigaciones Científicas y Técnicas,
https://www.argentina.gob.ar/sites/default/files/if-2020-84549271-apn-dcpconicet_ing_y_ambiente_periglacial_plan_de_actualizaci_n_2019.pdf (last access: 5 April 2022),
2019.
Immerzeel, W. W., Lutz, A. F., Andrade, M., Bahl, A., Biemans, H., Bolch,
T., Hyde, S., Brumby, S., Davies, B. J., Elmore, A. C., Emmer, A., Feng, M.,
Fernández, A., Haritashya, U., Kargel, J. S., Koppes, M., Kraaijenbrink,
P. D. A., Kulkarni, A. V., and Maye, J. E. M.: Importance and vulnerability
of the world's water towers, Nature, 577, 364–369,
https://doi.org/10.1038/s41586-019-1822-y, 2020.
Janke, J. R., Bellisario, A. C., and Ferrando, F. A.: Classification of
debris-covered glaciers and rock glaciers in the Andes of central Chile,
Geomorphology, 241, 98–121, https://doi.org/10.1016/j.geomorph.2015.03.034, 2015.
Jones, D. B., Harrison, S., Anderson, K., and Betts, R. A.: Mountain rock
glaciers contain globally significant water stores, Sci. Rep., 8, 2834,
https://doi.org/10.1038/s41598-018-21244-w, 2018.
Kääb, A., Berthier, E., Nuth, C., Gardelle, J., and Arnaud, Y.: Contrasting patterns of early twenty-first-century glacier mass change in the Himalayas, Nature, 488, 495–498, https://doi.org/10.1038/nature11324, 2012.
Kinnard, C., Ginot, P., Surazakov, A., MacDonell, S., Nicholson, L., Patris,
N., Rabatel, A., Rivera, A., and Squeo, F. A.: Mass Balance and Climate
History of a High-Altitude Glacier, Desert Andes of Chile, Front. Earth
Sci., 8, 40, https://doi.org/10.3389/feart.2020.00040, 2020.
Lu, Y., Zhang, Z., Shangguan, D., and Yang, J.: and Deep Learning for Mapping
Debris-Covered Glaciers, Remote Sens., 13, 2595, https://doi.org/10.3390/rs13132595,
2021.
MacDonell, S. and González, E.: Developing a rock glacier management
plan in Northern Chile [conference presentation], in: SouthCOP, Queenstown,
New Zealand, [online], http://www.uspermafrost.org/assets/docs/Publications/Proceedings/RCOP/2019 - SouthCOP.pdf (last access: 5 April 2022), 2019.
MacDonell, S., Kinnard, C., Mölg, T., Nicholson, L., and Abermann, J.: Meteorological drivers of ablation processes on a cold glacier in the semi-arid Andes of Chile, The Cryosphere, 7, 1513–1526, https://doi.org/10.5194/tc-7-1513-2013, 2013.
Masiokas, M. H., Rabatel, A., Rivera, A., Ruiz, L., Pitte, P., Ceballos, J.
L., Barcaza, G., Soruco, A., Bown, F., Berthier, E., Dussaillant, I., and
MacDonell, S.: A Review of the Current State and Recent Changes of the
Andean Cryosphere, Front. Earth Sci., 8, 1–27,
https://doi.org/10.3389/feart.2020.00099, 2020.
Mattson, L. E., Gardner, J. S., and Young, G. J.: Ablation on debris covered
glaciers: an example from the Rakhiot Glacier, Punjab, Himalaya, Snow
glacier Hydrol. Proc. Int. Symp. Kathmandu 1992, 218, 289–296, 1993.
Miles, E. S., Pellicciotti, F., Willis, I. C., Steiner, J. F., Buri, P., and
Arnold, N. S.: Refined energy-balance modelling of a supraglacial pond,
Langtang Khola, Nepal, Ann. Glaciol., 57, 29–40,
https://doi.org/10.3189/2016AoG71A421, 2016.
Monnier, S. and Kinnard, C.: Pluri-decadal (1955–2014) evolution of glacier–rock glacier transitional landforms in the central Andes of Chile (30–33° S), Earth Surf. Dynam., 5, 493–509, https://doi.org/10.5194/esurf-5-493-2017, 2017.
Moore, P. L., Nelson, L. I., and Groth, T. M. D.: Debris properties and
mass-balance impacts on adjacent debris-covered glaciers, Mount Rainier,
USA, Arctic, Antarct. Alp. Res., 51, 70–83,
https://doi.org/10.1080/15230430.2019.1582269, 2019.
National Geographic: Andean glaciers are melting, reshaping centuries-old
Indigenous rituals, http://www.nationalgeographic.com/culture/article/andean-glaciers-melting-reshaping-centuries-old-indigenous-rituals, last access: 23 November 2021.
Nicholson, L. and Benn, D. I.: Calculating ice melt beneath a debris layer
using meteorological data, J. Glaciol., 52, 463–470,
https://doi.org/10.3189/172756506781828584, 2006.
Östrem, G.: Ice Melting under a Thin Layer of Moraine, and the
Existence of Ice Cores in Moraine Ridges, Geogr. Ann., 41, 228–230,
https://doi.org/10.1080/20014422.1959.11907953, 1959.
Pellicciotti, F., Stephan, C., Miles, E., Herreid, S., Immerzeel, W. W., and Bolch, T.: Mass-balance changes of the debris-covered glaciers in the Langtang Himal, Nepal, from 1974 to 1999, J. Glaciol., 61, 373–386, https://doi.org/10.3189/2015JoG13J237, 2015.
Pourrier, J., Jourde, H., Kinnard, C., Gascoin, S., and Monnier, S.: Glacier meltwater flow paths and storage in a geomorphologically complex glacial foreland: The case of the Tapado glacier, dry Andes of Chile (30° S), J. Hydrol., 519, 1068–1083, https://doi.org/10.1016/j.jhydrol.2014.08.023, 2014.
Réveillet, M., MacDonell, S., Gascoin, S., Kinnard, C., Lhermitte, S., and Schaffer, N.: Impact of forcing on sublimation simulations for a high mountain catchment in the semiarid Andes, The Cryosphere, 14, 147–163, https://doi.org/10.5194/tc-14-147-2020, 2020.
RGIK: Towards standard guidelines for inventorying rock glaciers: baseline concepts (version 4.2), IPA Action Group Rock glacier inventories and kinematics (Ed.), 13 pp., 2021.
Robson, B. A., Bolch, T., MacDonell, S., Hölbling, D., Rastner, P., and
Schaffer, N.: Automated detection of rock glaciers using deep learning and
object-based image analysis, Remote Sens. Environ., 250, 112033
https://doi.org/10.1016/j.rse.2020.112033, 2020.
Robson, B. A., MacDonell, S., Ayala, Á., Bolch, T., Nielsen, P. R., and Vivero, S.: Glacier and rock glacier changes since the 1950s in the La Laguna catchment, Chile, The Cryosphere, 16, 647–665, https://doi.org/10.5194/tc-16-647-2022, 2022.
Rounce, D. R., Hock, R., McNabb, R. W., Millan, R., Sommer, C., Braun, M.
H., Malz, P., Maussion, F., Mouginot, J., Seehaus, T. C., and Shean, D. E.:
Distributed Global Debris Thickness Estimates Reveal Debris Significantly
Impacts Glacier Mass Balance, Geophys. Res. Lett., 48, e2020GL091311,
https://doi.org/10.1029/2020GL091311, 2021.
Rowe, P. M., Cordero, R. R., Warren, S. G., Stewart, E., Doherty, S. J.,
Pankow, A., Schrempf, M., Casassa, G., Carrasco, J., Pizarro, J., MacDonell,
S., Damiani, A., Lambert, F., Rondanelli, R., Huneeus, N., Fernandoy, F., and
Neshyba, S.: Black carbon and other light-absorbing impurities in snow in
the Chilean Andes, Sci. Rep., 9, 4008, https://doi.org/10.1038/s41598-019-39312-0, 2019.
Schaffer, N., MacDonell, S., Réveillet, M., Yáñez, E. and
Valois, R.: Rock glaciers as a water resource in a changing climate in the
semiarid Chilean Andes, Reg. Environ. Chang., 19, 1263–1279,
https://doi.org/10.1007/s10113-018-01459-3, 2019.
Scherler, D., Wulf, H., and Gorelick, N.: Global Assessment of Supraglacial
Debris-Cover Extents, Geophys. Res. Lett., 45, 11798–11805,
https://doi.org/10.1029/2018GL080158, 2018.
Schrott, L.: Some geomorphological-hydrological aspects of rock glaciers in
the Andes (San Juan, Argentina), Z. Geomorphol. N. F., 104,
161–173, 1996.
Senado de Chile: Sesión 21a, Ordinaria, en martes 4 de junio de
2019,
https://senado.cl/noticias/sesion-21-ordinaria-en-martes-04-de-junio-de-2019
(last access: 23 November 2021), 2019.
Wang, R., Liu, S., Shangguan, D., Radić, V., and Zhang, Y.: Spatial
Heterogeneity in Glacier Mass-Balance Sensitivity across High Mountain Asia,
Water, 11, 1–21, 2019.
Winkler, G., Wagner, T., Pauritsch, M., Birk, S., Kellerer-Pirklbauer, A.,
Benischke, R., Leis, A., Morawetz, R., Schreilechner, M. G., and Hergarten,
S.: Identification and assessment of groundwater flow and storage components
of the relict Schöneben Rock Glacier, Niedere Tauern Range, Eastern Alps
(Austria), Hydrogeol. J., 24, 937–953, https://doi.org/10.1007/s10040-015-1348-9, 2016.
Zalazar, L., Ferri, L., Castro, M., Gargantini, H., Gimenez, M., Pitte, P.,
Ruiz, L., Masiokas, M., Costa, G., and Villalba, R.: Spatial distribution and
characteristics of Andean ice masses in Argentina: Results from the first
National Glacier Inventory, J. Glaciol., 66, 938–949,
https://doi.org/10.1017/jog.2020.55, 2020.
Short summary
Over the last 2 decades the importance of Andean glaciers, particularly as water resources, has been recognized in both scientific literature and the public sphere. This has led to the inclusion of glaciers in environmental impact assessment and the development of glacier protection laws. We propose three categories that group glaciers based on their environmental sensitivity to hopefully help facilitate the effective application of these measures and evaluation of water resources in general.
Over the last 2 decades the importance of Andean glaciers, particularly as water resources, has...
