Articles | Volume 15, issue 1
https://doi.org/10.5194/tc-15-95-2021
© Author(s) 2021. 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-15-95-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Central Himalayan tree-ring isotopes reveal increasing regional heterogeneity and enhancement in ice mass loss since the 1960s
Nilendu Singh
Centre for Glaciology, Wadia Institute of Himalayan Geology, Dehradun
248001, India
Mayank Shekhar
Birbal Sahni Institute of Palaeosciences, Lucknow 226007, India
Jayendra Singh
Wadia Institute of Himalayan Geology, Dehradun 248001, India
Anil K. Gupta
Department of Geology and Geophysics, IIT Kharagpur, Kharagpur 721302, India
Achim Bräuning
CORRESPONDING AUTHOR
Institute of Geography, University of Erlangen–Nuremberg,
91058 Erlangen, Germany
Christoph Mayr
Institute of Geography, University of Erlangen–Nuremberg,
91058 Erlangen, Germany
Mohit Singhal
Centre for Glaciology, Wadia Institute of Himalayan Geology, Dehradun
248001, India
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Tree-ring isotope records from central Himalaya provided a basis for century-scale approximation on hydroclimate and glacier interaction. Multi-species isotopic coherencies specify an abrupt phase-shift since the 1960s and the governing role of winter-westerlies in regional ice-mass variability. Radiative forcing and glacier valley-scale vegetation trend analyses indicate that attribution of ice-mass to large-scale dynamics is likely to be modulated by local vegetation changes.
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Carolin Kiefer, Patrick Oswald, Jasper Moernaut, Stefano Claudio Fabbri, Christoph Mayr, Michael Strasser, and Michael Krautblatter
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Práxedes Muñoz, Lorena Rebolledo, Laurent Dezileau, Antonio Maldonado, Christoph Mayr, Paola Cárdenas, Carina B. Lange, Katherine Lalangui, Gloria Sanchez, Marco Salamanca, Karen Araya, Ignacio Jara, Gabriel Easton, and Marcel Ramos
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Kerstin Pasda, Matthias López Correa, Philipp Stojakowits, Bernhard Häck, Jérôme Prieto, Najat al-Fudhaili, and Christoph Mayr
E&G Quaternary Sci. J., 69, 187–200, https://doi.org/10.5194/egqsj-69-187-2020, https://doi.org/10.5194/egqsj-69-187-2020, 2020
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Clim. Past, 15, 1113–1131, https://doi.org/10.5194/cp-15-1113-2019, https://doi.org/10.5194/cp-15-1113-2019, 2019
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Berhan Gessesse, Woldeamlak Bewket, and Achim Bräuning
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J. Wernicke, J. Grießinger, P. Hochreuther, and A. Bräuning
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Related subject area
Discipline: Glaciers | Subject: Paleo-Glaciology (including Former Ice Reconstructions)
Brief communication: Identification of 140 000-year-old blue ice in the Grove Mountains, East Antarctica, by krypton-81 dating
Late Holocene glacier and climate fluctuations in the Mackenzie and Selwyn mountain ranges, northwestern Canada
Timing and climatic-driven mechanisms of glacier advances in Bhutanese Himalaya during the Little Ice Age
The Holocene dynamics of Ryder Glacier and ice tongue in north Greenland
Holocene thinning of Darwin and Hatherton glaciers, Antarctica, and implications for grounding-line retreat in the Ross Sea
Understanding drivers of glacier-length variability over the last millennium
Modelling last glacial cycle ice dynamics in the Alps
Modelling the late Holocene and future evolution of Monacobreen, northern Spitsbergen
Zhengyi Hu, Wei Jiang, Yuzhen Yan, Yan Huang, Xueyuan Tang, Lin Li, Florian Ritterbusch, Guo-Min Yang, Zheng-Tian Lu, and Guitao Shi
The Cryosphere, 18, 1647–1652, https://doi.org/10.5194/tc-18-1647-2024, https://doi.org/10.5194/tc-18-1647-2024, 2024
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The age of the surface blue ice in the Grove Mountains area is dated to be about 140 000 years, and one meteorite found here is 260 000 years old. It is inferred that the Grove Mountains blue-ice area holds considerable potential for paleoclimate studies.
Adam C. Hawkins, Brian Menounos, Brent M. Goehring, Gerald Osborn, Ben M. Pelto, Christopher M. Darvill, and Joerg M. Schaefer
The Cryosphere, 17, 4381–4397, https://doi.org/10.5194/tc-17-4381-2023, https://doi.org/10.5194/tc-17-4381-2023, 2023
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Our study developed a record of glacier and climate change in the Mackenzie and Selwyn mountains of northwestern Canada over the past several hundred years. We estimate temperature change in this region using several methods and incorporate our glacier record with models of climate change to estimate how glacier volume in our study area has changed over time. Models of future glacier change show that our study area will become largely ice-free by the end of the 21st century.
Weilin Yang, Yingkui Li, Gengnian Liu, and Wenchao Chu
The Cryosphere, 16, 3739–3752, https://doi.org/10.5194/tc-16-3739-2022, https://doi.org/10.5194/tc-16-3739-2022, 2022
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We simulated the glacier evolutions in Bhutanese Himalaya during the LIA using OGGM. At the regional scale, four compelling glacial substages were reported, and a positive correlation between the number of glacial substages and the glacier slope was found. Based on the surface mass balance analysis, the study also indicated that the regional glacier advances are dominated by the reduction of summer ablation.
Matt O'Regan, Thomas M. Cronin, Brendan Reilly, Aage Kristian Olsen Alstrup, Laura Gemery, Anna Golub, Larry A. Mayer, Mathieu Morlighem, Matthias Moros, Ole L. Munk, Johan Nilsson, Christof Pearce, Henrieka Detlef, Christian Stranne, Flor Vermassen, Gabriel West, and Martin Jakobsson
The Cryosphere, 15, 4073–4097, https://doi.org/10.5194/tc-15-4073-2021, https://doi.org/10.5194/tc-15-4073-2021, 2021
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Ryder Glacier is a marine-terminating glacier in north Greenland discharging ice into the Lincoln Sea. Here we use marine sediment cores to reconstruct its retreat and advance behavior through the Holocene. We show that while Sherard Osborn Fjord has a physiography conducive to glacier and ice tongue stability, Ryder still retreated more than 40 km inland from its current position by the Middle Holocene. This highlights the sensitivity of north Greenland's marine glaciers to climate change.
Trevor R. Hillebrand, John O. Stone, Michelle Koutnik, Courtney King, Howard Conway, Brenda Hall, Keir Nichols, Brent Goehring, and Mette K. Gillespie
The Cryosphere, 15, 3329–3354, https://doi.org/10.5194/tc-15-3329-2021, https://doi.org/10.5194/tc-15-3329-2021, 2021
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We present chronologies from Darwin and Hatherton glaciers to better constrain ice sheet retreat during the last deglaciation in the Ross Sector of Antarctica. We use a glacier flowband model and an ensemble of 3D ice sheet model simulations to show that (i) the whole glacier system likely thinned steadily from about 9–3 ka, and (ii) the grounding line likely reached the Darwin–Hatherton Glacier System at about 3 ka, which is ≥3.8 kyr later than was suggested by previous reconstructions.
Alan Huston, Nicholas Siler, Gerard H. Roe, Erin Pettit, and Nathan J. Steiger
The Cryosphere, 15, 1645–1662, https://doi.org/10.5194/tc-15-1645-2021, https://doi.org/10.5194/tc-15-1645-2021, 2021
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We simulate the past 1000 years of glacier length variability using a simple glacier model and an ensemble of global climate model simulations. Glaciers with long response times are more likely to record global climate changes caused by events like volcanic eruptions and greenhouse gas emissions, while glaciers with short response times are more likely to record natural variability. This difference stems from differences in the frequency spectra of natural and forced temperature variability.
Julien Seguinot, Susan Ivy-Ochs, Guillaume Jouvet, Matthias Huss, Martin Funk, and Frank Preusser
The Cryosphere, 12, 3265–3285, https://doi.org/10.5194/tc-12-3265-2018, https://doi.org/10.5194/tc-12-3265-2018, 2018
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About 25 000 years ago, Alpine glaciers filled most of the valleys and even extended onto the plains. In this study, with help from traces left by glaciers on the landscape, we use a computer model that contains knowledge of glacier physics based on modern observations of Greenland and Antarctica and laboratory experiments on ice, and one of the fastest computers in the world, to attempt a reconstruction of the evolution of Alpine glaciers through time from 120 000 years ago to today.
Johannes Oerlemans
The Cryosphere, 12, 3001–3015, https://doi.org/10.5194/tc-12-3001-2018, https://doi.org/10.5194/tc-12-3001-2018, 2018
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Monacobreen is a 40 km long surge-type tidewater glacier in northern Spitsbergen. The front is retreating fast. Calculations with a glacier model predict that due to future climate warming this glacier will have lost 20 to 40 % of its volume by the year 2100. Because of the glacier's memory, much of the response will come after 2100, even if the climatic conditions would stabilize.
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Short summary
Tree-ring isotope records from the central Himalaya provided a basis for previously lacking regional multi-century glacier mass balance (MB) reconstruction. Isotopic and climate coherency analyses specify an eastward-declining influence of the westerlies, an increase in east–west climate heterogeneity, and an increase in ice mass loss since the 1960s. Reasons for this are attributed to anthropogenic climate change, including concurrent alterations in atmospheric circulation patterns.
Tree-ring isotope records from the central Himalaya provided a basis for previously lacking...