Computer models focused on current and potential policy decisions could help shed light on the future of migration caused by sea level rise, concluded a team of scholars that included Brown demographer Elizabeth Fussell. (more…)
Q&A with DGS officials provides insight into sea level rise
Societal concerns about climate change, severe weather and rising seas are raising questions about readiness across the globe. Extreme weather events this year such as Hurricanes Harvey, Irma and Maria underscore the need to be prepared. (more…)
Washington, DC—New work from an international team including Carnegie’s Ken Caldeira demonstrates that the planet’s remaining fossil fuel resources would be sufficient to melt nearly all of Antarctica if burned, leading to a 50- or 60-meter (160- to 200-foot) rise in sea level. Because so many major cities are at or near sea level, this would put many highly populated areas where more than a billion people live under water, including New York City and Washington, DC. It is published in Science Advances. (more…)
AUSTIN, Texas — Thwaites Glacier, the large, rapidly changing outlet of the West Antarctic Ice Sheet, is not only being eroded by the ocean, it’s being melted from below by geothermal heat, researchers at the Institute for Geophysics at The University of Texas at Austin (UTIG) report in the current edition of the Proceedings of the National Academy of Sciences.
The findings significantly change the understanding of conditions beneath the West Antarctic Ice Sheet where accurate information has previously been unobtainable. (more…)
Von der Freiheitsstatue in New York über den Tower of London bis hin zum Opernhaus in Sydney – vom Anstieg des Meeresspiegels sind nicht nur Siedlungsräume großer Teile der Weltbevölkerung an den Küsten betroffen, sondern auch zahlreiche Stätten des UNESCO Weltkulturerbes. Das zeigt eine aktuelle Studie von Ben Marzeion von der Universität Innsbruck und Anders Levermann vom Potsdam-Institut für Klimafolgenforschung. (more…)
Over the past two decades, ice loss from the Greenland Ice Sheet increased four-fold contributing to one-quarter of global sea level rise. However, the chain of events and physical processes that contributed to it has remained elusive. One likely trigger for the speed up and retreat of glaciers that contributed to this ice loss is ocean warming.
A review paper by physical oceanographers Fiamma Straneo at Woods Hole Oceanographic Institution (WHOI) and Patrick Heimbach at MIT published in Nature explains what scientists have learned from their research on and around Greenland over the past 20 years and describes the measurements and technology needed to continue to move the science forward. (more…)
AUSTIN, Texas — As coastal communities continue to rebuild in the wake of Hurricane Sandy, scientists at last week’s annual meeting of the American Geophysical Union offer some encouraging news: The storm did not seriously damage the offshore barrier system that controls erosion on Long Island. Long-term concerns remain about the effects on the region of sea-level rise, pollutants churned up by the storm within back-barrier estuaries, and the damage closer to shore, but in the near-term, Long Island residents can rebuild knowing that Hurricane Sandy did not significantly alter the offshore barrier systems that control coastal erosion on the island. (more…)
ANN ARBOR — In events that could exacerbate sea level rise over the coming decades, stretches of ice on the coasts of Antarctica and Greenland are at risk of rapidly cracking apart and falling into the ocean, according to new iceberg calving simulations from the University of Michigan.
“If this starts to happen and we’re right, we might be closer to the higher end of sea level rise estimates for the next 100 years,” said Jeremy Bassis, assistant professor of atmospheric, oceanic and space sciences at the U-M College of Engineering, and first author of a paper on the new model published in the current issue of Nature Geoscience. (more…)
