1
NORTHERN H EMISPHERE TEMPERATURE R ECONSTRUCTIONS Medieval Warm Period 800 1000 1200 1400 1600 1800 900 1100 1300 1500 1700 1900 2000 700 IPCC, Climate Change 2007, The Physical Science Basis 0.5 0.0 -0.5 -1.0 0.5 0.0 -0.5 -1.0
