Roman and Medieval Warmth in the Arctic Atlantic Region
Hanhijarvi,S., Tingley, M.P. and Korhola, A. 2013. Pairwise comparisons to reconstruct mean temperature in the Arctic Atlantic Region over the last 2,000 years. Climate Dynamics 41: 2039-2060.
The ultimate take-home message of the three researchers work is contained in the final sentence of their paper's abstract: "The Arctic Atlantic reconstruction features temperatures during the Roman Warm Period and Medieval Climate Anomaly that are comparable [to] or even warmer than those of the twentieth century, and coldest temperatures in the middle of the nineteenth century, just prior to the onset of the recent warming trend [italics added]."
Once again, another study of real-world data suggests the warmest intervals of both the Roman and Medieval Warm Periods may have been warmer than the warmest interval of the Current Warm Period, suggesting there is nothing unusual, unnatural, or unprecedented about the planet's current level of warmth.