News & Events


  • MacAyeal stars on WTTW segment

    May 23, 2017

    Professor Doug MacAyeal starred on a recent WTTW segment discussing climate change and sea level rise. Click on the link to watch the video.

  • Former DoGS publish Heinrich event paper

    May 19, 2017

    Former DoGS postdoc Jeremy Bassis, now an associate professor at Michigan, and PhD alumnus Mac Cathles, now an assistant professor at Michigan, have published a paper in Nature arguing that Heinrich events were triggered by ocean warming. Heinrich events are large discharges of icebergs from the ice sheet on North America during the last glacial period. The mystery is that they are associated with cold atmospheric periods. Bassis and Cathles have shown that they probably were associated with warm oceans near the ice sheet margins, and that the warm water temperature led to the calving of large numbers of icebergs. Both Bassis and Cathles were advised by Doug MacAyeal while they were in Chicago.

  • Moyer group constrains isotopic fingerprint of cirrus cloud formation

    May 12, 2017

    University of Chicago graduate students Kara Lamb and Ben Clouser, postdoc Max Bolot, and Research Scientist Laszlo Sarkozy, working under the direction of Associate Professor Elisabeth Moyer, have carried out direct measurements of deuterium-hydrogen isotopic fractionation during ice deposition in simulated cirrus clouds at temperatures relevant to the polar regions of Earth and the near-surface atmospheric layers of Mars. The experiments used the Aerosol Interactions and Dynamics in the Atmosphere (AIDA) cloud chamber in Karlsruhe, Germany. The new data provide fundamental constraints that will improve confidence in the interpretation of deuterium isotopic variations in the atmospheres of both Earth and Mars. The results have been published in the Proceedings of the National Academy of Sciences.