Optimal surface temperature reconstructions using terrestrial borehole data

@inproceedings{Mann2003OptimalST,
  title={Optimal surface temperature reconstructions using terrestrial borehole data},
  author={Michael E. Mann and Scott Rutherford and Raymond S. Bradley and Malcolm Hughes and Frank T. Keimig},
  year={2003}
}
[1] We derive an optimal Northern Hemisphere mean surface temperature reconstruction from terrestrial borehole temperature profiles spanning the past five centuries. The pattern of borehole ground surface temperature (GST) reconstructions displays prominent discrepancies with instrumental surface air temperature (SAT) estimates during the 20th century, suggesting the presence of a considerable amount of noise and/or bias in any underlying spatial SAT signal. The vast majority of variance in the… CONTINUE READING