A topographically controlled tipping point for complete Greenland ice sheet melt by M. Petrini, M. Petrini, M. D. W. Scherrenberg, L. Muntjewerf, L. Muntjewerf, M. Vizcaino, R. Sellevold, G. R. Leguy, W. H. Lipscomb, H. Goelzer

“…<p>A major impact of anthropogenic climate change is the crossing of tipping points, which may have severe consequences such as the complete mass loss of the Greenland ice sheet (GrIS). At present, the GrIS is losing mass at an accelerated rate, largely due to a steep decrease in its surface mass balance (SMB; the balance between snow accumulation and surface ablation from melt and associated runoff). …”
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Expansion of supraglacial lake area, volume and extent on the Greenland ice sheet from 1985 to 2023 by Yubin Fan, Chang-Qing Ke, Lanhua Luo, Xiaoyi Shen, Stephen John Livingstone, James M. Lea

Subjects: “…Greenland ice sheet…”
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Retreat of the Greenland Ice Sheet leads to divergent patterns of reconfiguration at its freshwater and tidewater margins by Jonathan Ryan, Theo Ross, Sarah Cooley, Dominik Fahrner, Nicole Abib, Victoria Benson, David Sutherland

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Surface energy balance closure over melting snow and ice from in situ measurements on the Greenland ice sheet by Maurice van Tiggelen, Paul C. J. P. Smeets, Carleen H. Reijmer, Dirk van As, Jason E. Box, Robert S. Fausto, Shfaqat Abbas Khan, Eric Rignot, Michiel R. van den Broeke

“…This study quantifies the SEB closure by comparing the energy available for surface melt, determined from continuous measurements of radiative fluxes and turbulent heat fluxes, to the surface ablation measured on the Greenland ice sheet between 2003 and 2023. We find that the measured daily energy available for surface melt exceeds the observed surface melt by on average 18 ± 30 W m−2 for snow and 12 ± 54 W m−2 for ice conditions (mean ± SD), which corresponds to 46 and 10% of the average energy available for surface melt, respectively. …”
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Molecular-level characterization of supraglacial dissolved and water-extractable organic matter along a hydrological flow path in a Greenland Ice Sheet micro-catchment by E. L. Doting, E. L. Doting, I. T. Stevens, A. M. Kellerman, P. E. Rossel, R. Antony, R. Antony, A. M. McKenna, A. M. McKenna, M. Tranter, L. G. Benning, L. G. Benning, R. G. M. Spencer, J. R. Hawkings, J. R. Hawkings, A. M. Anesio

“…Here, we use Fourier transform cyclotron resonance mass spectrometry to characterize dissolved organic matter (DOM) along a meltwater flow path in a hydrologically connected micro-catchment on the southern Greenland Ice Sheet. We find a decrease in the relative abundance of aromatic formulae from surface ice (24.9 <span class="inline-formula">±</span> 2.8 %) to weathering crust meltwater (3.5 <span class="inline-formula">±</span> 0.3 %) to supraglacial stream water (2.2 <span class="inline-formula">±</span> 0.2 %), pointing towards photodegradation of aromatic DOM during supraglacial meltwater transit. …”
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Modelling lateral meltwater flow and superimposed ice formation atop Greenland's near-surface ice slabs by Nicole Clerx, Horst Machguth, Andrew Tedstone, Dirk van As

“…At high elevations on the Greenland ice sheet meltwater percolates and refreezes in place, and hence does not contribute to mass loss. …”
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Performance characterization of a new, low-cost multi-GNSS instrument for the cryosphere by Derek James Pickell, Robert Lyman Hawley

“…An array of these instruments, tested in the field on the Greenland Ice Sheet, also demonstrated robustness throughout the polar winter and met power and reliability requirements.…”
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Assessing the effects of fjord geometry on Greenland tidewater glacier stability by Elizabeth Fischer, Andy Aschwanden

“…This complicates the task of forecasting the evolution of individual glaciers and the overall Greenland ice sheet, much of which is drained by tidewater glaciers. …”
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A New Era of Submillimeter GRB Afterglow Follow-Ups with the Greenland Telescope by Yuji Urata, Kuiyun Huang, Keiichi Asada, Hiroyuki Hirashita, Makoto Inoue, Paul T. P. Ho

“…The GLT is a 12-m submm telescope to be located at the top of the Greenland ice sheet, where the high altitude and dry weather porvide excellent conditions for observations at submm wavelengths. …”
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Terminus thinning drives recent acceleration of a Greenlandic lake-terminating outlet glacier by Ed Holt, Peter Nienow, Encarni Medina-Lopez

“…We attribute these dynamic differences to thinning at Isortuarsuup Sermia and subsequent retreat from a stabilising sublacustrine moraine, and emphasise the potential of proglacial lakes to enhance future rates of mass loss from the Greenland Ice Sheet.…”
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Ice‐Marginal Proglacial Lakes Across Greenland: Present Status and a Possible Future by Jonathan L. Carrivick, Penelope How, James M. Lea, Jenna L. Sutherland, Michael Grimes, Fiona S. Tweed, Stephen Cornford, Duncan J. Quincey, Joseph Mallalieu

“…Abstract Ice‐marginal lakes can affect glacier dynamics but are ignored in studies of the evolution of the Greenland ice sheet (GrIS) and of peripheral mountain glaciers and ice caps (PGICs). …”
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Vulnerability of firn to hydrofracture: poromechanics modeling by Yue Meng, Riley Culberg, Ching-Yao Lai

“…On the Greenland Ice Sheet, hydrofracture connects the supraglacial and subglacial hydrologic systems, coupling surface runoff dynamics and ice velocity. …”
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Future large-scale atmospheric circulation changes and Greenland precipitation by Baojuan Huai, Minghu Ding, Michiel R. van den Broeke, Carleen H. Reijmer, Brice Noël, Weijun Sun, Yetang Wang

“…This implies that the IL location will have a strong influence on precipitation changes over southeast Greenland in the future, impacting projections of Greenland ice sheet surface mass balance.…”
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Validating ensemble historical simulations of Upernavik Isstrøm (1985–2019) using observations of surface velocity and elevation by Eliot Jager, Fabien Gillet-Chaulet, Jérémie Mouginot, Romain Millan

“…The future of tidewater glaciers in response to climate warming is one of the largest sources of uncertainty in the contribution of the Greenland ice sheet to global sea-level rise. In this study, we investigate the ability of an ice-sheet model to reproduce the past evolution of the velocity and surface elevation of a tidewater glacier, Upernavik Isstrøm, by prescribing front positions. …”
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Accelerating Ice Loss From Peripheral Glaciers in North Greenland by Shfaqat A. Khan, William Colgan, Thomas A. Neumann, Michiel R. van denBroeke, Kelly M. Brunt, Brice Noël, Jonathan L. Bamber, Javed Hassan, Anders A. Bjørk

“…While their total area of Greenland ice cover is relatively small (4%), their mass loss is disproportionally large compared to the Greenland ice sheet. Satellite altimetry from Ice, Cloud, and land Elevation Satellite (ICESat) and ICESat‐2 shows that mass loss from Greenland's peripheral glaciers increased from 27.2 ± 6.2 Gt/yr (February 2003–October 2009) to 42.3 ± 6.2 Gt/yr (October 2018–December 2021). …”
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Supraglacial Lake Depth Retrieval from ICESat-2 and Multispectral Imagery Datasets by Quan Zhou, Qi Liang, Wanxin Xiao, Teng Li, Lei Zheng, Xiao Cheng

“…We tested this method via Landsat-8 and Sentinel-2 imagery and evaluated the accuracy of the algorithm on 7 test lakes on the Greenland Ice Sheet. Our results show that machine learning-based algorithms achieve better accuracy than traditional regression or physics-based methods do, especially for deeper lakes. …”
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Ice speed of a Greenlandic tidewater glacier modulated by tide, melt, and rain by S. Sugiyama, S. Sugiyama, S. Tsutaki, S. Tsutaki, D. Sakakibara, D. Sakakibara, I. Asaji, K. Kondo, Y. Wang, E. Podolskiy, G. Jouvet, G. Jouvet, M. Funk

“…<p>Ice discharge from the Greenland ice sheet is controlled by tidewater glacier flow speed, which shows large variations on different timescales. …”
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History and dynamics of Fennoscandian Ice Sheet retreat, contemporary ice-dammed lake evolution, and faulting in the Torneträsk area, northwestern Sweden by K. Ploeg, K. Ploeg, K. Ploeg, A. P. Stroeven, A. P. Stroeven

“…<p>The prospect of alarming levels of future sea level rise in response to the melting of the Antarctic and Greenland ice sheets affirms an urgency to better understand the dynamics of these retreating ice sheets. …”
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