NORTHERN HEMISPHERE TEMPERATURE R ECONSTRUCTIONS

MedievalWarm Period

800 1000 1200 1400 1600 1800900 1100 1300 1500 1700 1900 2000700

IPCC, Climate Change 2007, The Physical Science Basis

0.5

0.0

-0.5

-1.0

0.5

0.0

-0.5

-1.0