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News
 October 1, 2020
The largest pre-industrial rates of mass loss (up to 6,000 billion tonnes per century) occurred in the early Holocene, and were similar to the contemporary (AD 2000–2018) rate. An ensemble of ISSM simulations of southwestern Greenland are forced with different plausible climate histories constrained by ice-core data. These simulations are extended through 2100 to determine a spread of possible future mass loss from the southwest region. They predict mass loss of between 8,800 and 35,900 billion tonnes over the twenty-first century, exceeding the maximum rates simulated over the past 12,000 years. Scaling results up to the continental ice sheet, results indicate, with high confidence, that the rate of mass loss from the GIS will exceed Holocene rates this century.
  September 17, 2020
ISSM contributes to the ISMIP6 projections for the Greenland and Antarctic evolution
 March 9, 2020
New paper in The Cryosphere determines that exceptionally high heat flux is needed to maintain NEGIS
Using the Ice Sheet System Model, with ice dynamics coupled to a subglacial hydrology model, this study investigates the possibility of initiating NEGIS by inserting heat flux anomalies with various locations and intensities. A minimum heat flux value of 970 mW m−2 located close to the East Greenland Ice-core Project (EGRIP) is required locally to reproduce the observed NEGIS velocities, giving basal melt rates consistent with previous estimates.
 February 28, 2020
The 2020 ISSM Workshop has been cancelled
 January 21, 2020
Using a model of the Northeast Greenland Ice Stream, the authors conduct numerical experiments to determine how different estimates of geothermal heat flux affect model estimates of basal hydrology, sliding, and mass flux.
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