The Economic Impact of Greenhouse Gas Emissions

Fig1

Figure 1. Extra-tropical Northern Hemisphere temperatures utilizing many palaeo-temperature proxy records, adapted from Ljungqvist 2010. The shading represents 2 standard deviation errors. RWP = Roman Warm Period AD 1-300; DACP = Dark Age Cold Period 300-900; MWP = Medieval Warm Period 800-1300; LIA = Little Ice Age 1300-1900; CWP = Current Warm Period 1900-now.Figure 1. Extra-tropical Northern Hemisphere temperatures utilizing many palaeo-temperature proxy records, adapted from Ljungqvist 2010. The shading represents 2 standard deviation errors. RWP = Roman Warm Period AD 1-300; DACP = Dark Age Cold Period 300-900; MWP = Medieval Warm Period 800-1300; LIA = Little Ice Age 1300-1900; CWP = Current Warm Period 1900-now.

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