GEOS - Reading Ice Cores
(First of two companion podcasts: see also Ice Drillers are Hard Core)
In May and June 2007, Mary Albert (CRREL) and Jeff Severinghaus (Scripps) led a team of 9 researchers and 3 drillers in a 3-week project to drill down through nearly 125 meters of "firn" and ice close to NSF's Summit Station, Greenland. "Firn" is multi-year snow before it's transformed into solid ice through the pressure of layer upon layer of new snow each successive year. Understanding the physical structure of the firn and the gases trapped in it, is essential to properly interpreting the ice core record, and understanding what cores reveal about Earth's past climate. As Jeff Severinghaus says, with a more accurate understanding of snow, firn and ice you can take climate data from ice cores "to the bank" - such as the fact that sometimes Earth's climate can jump 18 degrees F in just a decade - and make more accurate predictions of the future.
Polar Palooza Home | About The Poles | About Polar Palooza | The Travelers
Educator's Corner | Sites and Cities | The HDvCC | Media Palooza
Supplies & Resources | Credits & Contacts | Site Search | Polar Palooza Blog
POLAR-PALOOZA and the materials on this website are based upon work supported by the National Science Foundation under Grant No. 0632262. Any opinions, findings and conclusions or recommendations expressed in this material are those of PASSPORT TO KNOWLEDGE/Geoff Haines-Stiles Productions, Inc., and do not necessarily reflect those of the National Science Foundation.