Summer temperatures during the Medieval Warm Period and Little Ice Age inferred from varved proglacial lake sediments in southern Alaska

Summer temperature variations in Lapland

Summer temperature variations in Lapland during the Medieval Warm Period and the Little Ice Age relative to natural instability of thermohaline circulation on multi-decadal and multi-centennial scales

✍ Samuli Helama; Mauri Timonen; Jari Holopainen; Maxim G. Ogurtsov; Kari Mielikäin 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 220 KB

## Abstract New tree ring‐based analysis for climate variability at a regional scale is presented for high latitudes of Europe. Our absolutely dated temperature reconstruction seeks to characterise the summer temperatures since AD 750. The warmest and coolest reconstructed 250‐year periods occurred