Atlantic (period)

The Atlantic in palaeoclimatology was the warmest and moistest Blytt–Sernander period, pollen zone and chronozone of Holocene northern Europe. The climate was generally warmer than today. It was preceded by the Boreal, with a climate similar to today's, and was followed by the Subboreal, a transition to the modern. Because it was the warmest period of the Holocene, the Atlantic is often referenced more directly as the Holocene climatic optimum, or just climatic optimum.

Preceded by the Pleistocene
Holocene
Epoch
Canopy of deciduous temperate forest, which spread to the north in the Atlantic Period.

ICS stages/ages (official)

Greenlandian (11.7*–8.236* ka)
Northgrippian (8.236–4.2† ka)
Meghalayan (4.2 ka–present)

Blytt–Sernander stages/ages

Preboreal (10.3†–9† ka)
Boreal (9–7.5† ka)
Atlantic (7.5–5† ka)
Subboreal (5–2.5† ka)
Subatlantic (2.5 ka–present)

*Relative to year 2000 (b2k).

†Relative to year 1950 (BP/Before "Present").
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