The Iron Age Cold Epoch (also referred to as Iron Age climate pessimum or Iron Age neoglaciation) was a period of unusually cold climate in the
North Atlantic region, lasting from about 900 BC to about 300 BC, with an especially
cold wave in 450 BC during the
expansion of ancient Greece. It was followed by the
Roman Warm Period (250 BC – 400 AD).
Gill Plunkett and
Graeme T. Swindles of
Queen's University Belfast
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used volcanic ash layers and radiocarbon dating to constrain the start of Iron Age climate deterioration in Ireland to 750 BC.
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History of climate variability and change
Iron Age
Holocene
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