Sentences with phrase «sustained warm interval»

However, the period from around ad 830 to 1100 generally encompassed a sustained warm interval in all four Northern Hemisphere regions.

«the period from around AD 830 to 1100 generally encompassed a sustained warm interval in all four Northern Hemisphere regions.

Not exact matches

Intervals of sustained low extent of sea ice cover occurred before AD 1200, and may be coincident with the so - called Medieval Warm Optimum (roughly AD 800 — 1300) attested in numerous Northern Hemisphere proxy records18, but the pre-industrial minimum occurred before, at about AD 640 (T3 in Fig. 3).

The most recent interval in which sustained global temperatures exceeded those of today was during the Pliocene epoch (2.6 — 5.3 Ma), when global surface temperatures were between 2 and 3 °C warmer than present (Dowsett, 2007).