TY - JOUR A1 - Christiansen, B. A1 - Ljungqvist, F. C. T1 - The extra-tropical Northern Hemisphere temperature in the last two millennia: reconstructions of low-frequency variability JO - Clim. Past J1 - CP VL - 8 IS - 2 SP - 765 EP - 786 Y1 - 2012/04/18 PB - Copernicus Publications SN - 1814-9332 UR - https://cp.copernicus.org/articles/8/765/2012/ L1 - https://cp.copernicus.org/articles/8/765/2012/cp-8-765-2012.pdf DO - 10.5194/cp-8-765-2012 ER -