A record of climate change frozen in ice
Atop the Greenland Ice Cap, glaciologists have drilled through 3,000 meters of accumulated ice, all the way to bedrock. The ice cores they extracted contain a detailed climate record, extending back 115,000 years, that built up slowly from annual layers of snowfall. The layers in the ice tell of dramatic and extremely rapid climate fluctuations — significantly greater than those during the stable period of the last 10,000 years. The rapid fluctuations and prolonged stable periods are among the mysteries that climate scientists seek to solve.
Topic: Earth Science
Subtopic: Climate/Climate Change
Keywords: Climatic changes--Observations, Climatology, Greenland, Ice caps, Ice cores