Unprecedented recent summer warmth in Arctic Canada

@article{Miller2013UnprecedentedRS,
  title={Unprecedented recent summer warmth in Arctic Canada},
  author={Gifford H. Miller and Scott J. Lehman and Kurt A. Refsnider and John R. Southon and Yafang Zhong},
  journal={Geophysical Research Letters},
  year={2013},
  volume={40},
  pages={5745 - 5751}
}
Arctic air temperatures have increased in recent decades, along with documented reductions in sea ice, glacier size, and snow cover. However, the extent to which recent Arctic warming has been anomalous with respect to long‐term natural climate variability remains uncertain. Here we use 145 radiocarbon dates on rooted tundra plants revealed by receding cold‐based ice caps in the eastern Canadian Arctic to show that 5000 years of regional summertime cooling has been reversed, with average summer… 

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