Chip Chick on MSN5d
These Bizarre Blue Tree Rings Are Unveiling Details About Cold Summers From A Century AgoIn order to grow properly, trees need an adequate period of warmth during their growing seasons; otherwise, the cell walls [… ...
Volcanic eruptions and cold summers leave lasting marks in the wood of northern trees, unlocking the secrets of past climate extremes.
When volcanic activity in the northern Hemisphere caused the temperature to plunge further, the pine forest trees became locked in ice, where they remained until it began to thaw in recent years.
Scientists studying tree rings in northern Norway have linked ‘blue’ rings, caused by cold summers, to volcanic eruptions ...
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