By Paul Homewood

Repost from NoTricksZone:

A Much Warmer Northern Hemisphere

During the Medieval Warm Period, wine vineyards flourished in Scandinavia and Russia at the same latitude (55°N) where polar bears roam today.

Image Source: Lamb, 1959

Earlier in the Holocene, when CO2 levels hovered around 260 ppm, vast forests extended all the way up to the coasts of the Arctic Ocean (Russia), suggesting temperatures were up to 7°C warmer than today (MacDonald et al., 2000).

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September 28, 2019 at 04:15AM