Old Rocks
Diamond Member
Old Rocks knows there was no Medieval Warm Period because Mann proved there wasn't. Why are you trying to confuse him?
If the little ice age and med evil warm period Where caused by the sun...Then it was planet wide, but if it was caused by a shut down of the gulf stream or blocking-then the warmers could be right about it being just european and nothing more. Remember this is planet wide..Even Global warming has much of its warming within the arctic and very tiny amounts within the tropics. Only a few ways to warm a planet 1# Increase the stars output going to the planet, 2# change the reflectivity of the planet(less ice to reflect the energy back into space), 3# Increase green house gas to trap out going energy and cause a imbalance .
If it was our sun being super inactive, which I believe to be so...Then those periods could of been planet wide. If not then european event.
There is no question in my mind that they occurred. They are fact.
The MWP has been found in the Sierra Nevada Mountains, the islands of Polynesia, the Himalya, India, South America and every other place it has been looked for. the MWP and the LIA were not regional...they were global in extent.
There is no record of the MWP in the ice cores of the Himalayas.
A42D
You state that you attended the 2010 AGU Convention. Did you bother to attend any lectures? Dr. Thompson presented ice data from the Himalayas, Andes, Greenland, Antarctica, and New Guinea. You can see in the lecture there was no MWP signiture in either the Himalayan or New Guinea ice cores.