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Showing 1–22 of 22 results
Advanced filters: Author: E. Rignot Clear advanced filters

  • Surface melt is an important component of ice sheet dynamics, but for many remote regions the melt rates are mainly known from models. Here the authors present satellite observations of melt rates for Greenland and Antarctica, showing that East Antarctica has become a melting hotspot.

    • Lei Zheng
    • Xinyi Shang
    • Xiao Cheng
    Research
    Nature Climate Change
    Volume: 15, P: 769-774

  • Lakes are essential components of the hydrological and biogeochemical cycles. Here, Pi et al develop a global lake dataset called GLAKES via high-resolution satellite images and deep learning to examine global lake changes over four decades.

    • Xuehui Pi
    • Qiuqi Luo
    • Brett A. Bryan
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-12

  • This study uses ice sheet modeling experiments to show that thawing portions of the Antarctic ice sheet bed can increase century-scale mass loss, particularly in the Wilkes and Enderby Land regions of East Antarctica.

    • Eliza J. Dawson
    • Dustin M. Schroeder
    • Hélène Seroussi
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-9

  • Totten Glacier discharges the largest volume of ice in East Antarctica, but the mechanisms causing its recent thinning are relatively unknown. Khazendar et al.combine remote-sensing data with high-resolution ice–ocean modelling to link this recent thinning to reduced sea ice production in polynyas.

    • A. Khazendar
    • M.P. Schodlok
    • M.R. van den Broeke
    Research
    Nature Communications
    Volume: 4, P: 1-9

  • Glaciers in the Andes have lost about 23 Gt of mass per year between 2000 and 2018, with the fastest loss in Patagonia, according to time series of digital elevation models that are based on ASTER stereo images.

    • I. Dussaillant
    • E. Berthier
    • L. Ruiz
    Research
    Nature Geoscience
    Volume: 12, P: 802-808

  • When basal meltwater refreezes, the resulting warm ice can influence the flow dynamics of the ice sheet above. An analysis of airborne gravity and radar data identifies extensive basal-ice units across the northern Greenland ice sheet that coincide with areas of deformed ice and fast ice flow.

    • Robin E. Bell
    • Kirsteen Tinto
    • John D. Paden
    Research
    Nature Geoscience
    Volume: 7, P: 497-502

  • The bed topography beneath the Greenland ice sheet controls the flow of ice and its discharge into the ocean. A combination of sparse radar soundings of ice thickness and high-resolution ice motion data suggest that many submarine ice-covered valleys extend significantly deeper below sea level and farther inland than thought.

    • M. Morlighem
    • E. Rignot
    • E. Larour
    Research
    Nature Geoscience
    Volume: 7, P: 418-422

  • Melt lakes form each year on the surface of the Greenland ice sheet but currently occur in regions with good subglacial drainage. An investigation of the impacts of the warming climate finds that the lakes will expand to higher elevations where ice-sheet drainage is not as efficient, which could result in enhanced lubrication and warming of the base of the ice.

    • A. A. Leeson
    • A. Shepherd
    • E. Rignot
    Research
    Nature Climate Change
    Volume: 5, P: 51-55

  • The Pope, Smith and Kohler glaciers in West Antarctica have exhibited faster than expected retreat rates in recent years, according to grounding-line observations from satellite radar interferometry.

    • P. Milillo
    • E. Rignot
    • L. Dini
    Research
    Nature Geoscience
    Volume: 15, P: 48-53

  • Thwaites Eastern Ice Shelf observations from a new underwater vehicle show that high melt rates occur where ice is sharply sloped at the ocean interface, with lower melt where the ice is comparatively flat.

    • B. E. Schmidt
    • P. Washam
    • K. Makinson
    ResearchOpen Access
    Nature
    Volume: 614, P: 471-478

  • Despite observations from a hot-water-drilled access hole showing warm ocean waters beneath Thwaites Glacier Eastern Ice Shelf, the basal melt rate is strongly suppressed due to the low current speeds and strong density stratification.

    • Peter E. D. Davis
    • Keith W. Nicholls
    • Keith Makinson
    ResearchOpen Access
    Nature
    Volume: 614, P: 479-485

  • Glaciers on the west Antarctic Peninsula flowed on average 12% faster during the summer compared with winter due to a mix of oceanic and atmospheric influences, according to an analysis of remote sensing data from 2014 to 2021.

    • Benjamin J. Wallis
    • Anna E. Hogg
    • Michiel R. van den Broeke
    Research
    Nature Geoscience
    Volume: 16, P: 231-237

  • Three techniques for estimating mass losses from the Greenland Ice Sheet produce comparable results for the period 1992–2018 that approach the trajectory of the highest rates of sea-level rise projected by the IPCC.

    • Andrew Shepherd
    • Erik Ivins
    • Jan Wuite
    Research
    Nature
    Volume: 579, P: 233-239

  • The different contributions of long-term and short-term variability to the evolution of ice sheets lead to substantial uncertainties in ice sheet models. This Review describes the response of ice sheets to oceanic, atmospheric and hydrological processes across a range of timescales.

    • Edward Hanna
    • Dániel Topál
    • Lizz Ultee
    Reviews
    Nature Reviews Earth & Environment
    Volume: 5, P: 193-210

  • The Southern Patagonian Icefield likely stores around 10% more ice than previously believed, according to ice thickness estimates based on remote sensing and direct measurement-informed mapping of the sub-glacial topography.

    • Johannes J. Fürst
    • David Farías-Barahona
    • Marius Schaefer
    ResearchOpen Access
    Communications Earth & Environment
    Volume: 5, P: 1-10