Read here. A peer-reviewed study documents the extremely warm
temperatures of the Medieval Period that occurred in the
California Sierra Nevada range. Scientists, working with dead
tree trunks located above the current treeline, affirm
California's Medieval extreme warm temperature history, which
still remains unprecedented. "Working with dead tree trunks
located above the current treeline on tephra-covered slopes of
Whitewing Mountain and San Joaquin Ridge.....the five
researchers say "the Medieval forest on Whitewing was growing
under mild, favorable conditions (warm with adequate moisture),"
as indicated by "extremely low mean sensitivities [to stress]
and large average ring widths." More specifically, they
conclude, as reported in their abstract, that annual minimum
temperatures during the Medieval Climatic Anomaly in the region
they studied were "significantly warmer" (+3.2°C) "than
present,".....Once again, we have another example of a
paleoclimate study in which the Medieval Warm Period is
determined t