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Antarctic Sea Ice Variability in the Southern Ocean-Climate System: Proceedings of a Workshop (2017)

The sea ice surrounding Antarctica has increased in extent and concentration from the late 1970s, when satellite-based measurements began, until 2015. Although this increasing trend is modest, it is surprising given the overall warming of the global climate and the region. Indeed, climate models, which incorporate our best understanding of the processes affecting the region, generally simulate a decrease in sea ice. Moreover, sea ice in the Arctic has exhibited pronounced declines over the same period, consistent with global climate model simulations. For these reasons, the behavior of Antarctic sea ice has presented a conundrum for global climate change science.

The National Academies of Sciences, Engineering, and Medicine held a workshop in January 2016, to bring together scientists with different sets of expertise and perspectives to further explore potential mechanisms driving the evolution of recent Antarctic sea ice variability and to discuss ways to advance understanding of Antarctic sea ice and its relationship to the broader ocean-climate system. This publication summarizes the presentations and discussions from the workshop.

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View the Workshop Agenda with links to the presentations


Webinar: Antarctic Sea Ice Variability in the Southern Ocean-Climate System

Thursday, May 4, 2017, 2 pm EDT

Register now to join a free webinar to recap the themes discussed at the Polar Research Board workshop Antarctic Sea Ice Variability in the Southern Ocean-Climate System, and explore new findings that have emerged since the workshop took place.

The workshop, which took place in January 2016, focused on the potential mechanisms driving increases in the extent and concentration of the sea ice surrounding Antarctic from the late 1970s until 2015—increases that were not reproduced by climate models, and that came despite the overall warming of the global climate and the region. Leading scientists discussed the possible drivers of changes in Antarctic sea ice and ways to better understand the complex relationship between Antarctic sea ice and the broader ocean-climate system (summarized in the Workshop Proceedings).

The webinar will feature presentations from the chair of the workshop planning committee, Julienne Stroeve of the University of Colorado, Boulder, and from committee members Marika Holland of the National Center for Atmospheric Research, Boulder, and Marilyn Raphael of the University of California, Los Angeles. Please tune in!

Permanent link to this article: http://nas-sites.org/americasclimatechoices/other-reports-on-climate-change/antarctic-sea-ice-variability-in-the-southern-ocean-climate-system-proceedings-of-a-workshop-2017/