Inter‐annual to multi‐decadal Arctic sea ice extent trends in a warming world

  title={Inter‐annual to multi‐decadal Arctic sea ice extent trends in a warming world},
  author={Jennifer E. Kay and Marika M. Holland and Alexandra Jahn},
  journal={Geophysical Research Letters},
A climate model (CCSM4) is used to investigate the influence of anthropogenic forcing on late 20th century and early 21st century Arctic sea ice extent trends. On all timescales examined (2–50+ years), the most extreme negative observed late 20th century trends cannot be explained by modeled natural variability alone. Modeled late 20th century ice extent loss also cannot be explained by natural causes alone, but the six available CCSM4 ensemble members exhibit a large spread in their late 20th… 

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