ICE CORE RECORDS SHOW GREENLAND WAS WARMER THAN TODAY MANY TIMES

Reconstructions of past temperatures are a vital piece of data to help us to understand whether today's climate is unusual or even unprecedented as some alarmists try to make out. The graph in the link below shows a reconstruction from an ice core from Greenland, taken as part of the Greenland Ice Sheet Project (GISP) which covers the past 10000 years. This ice core temperature reconstruction is viewed as a gold standard when it comes to proxy data-based reconstructions, unlike other proxy data reconstructions based on dubious  tree ring analyses.  

Not About CO2…Greenland Still Much Colder Today Than Much Of The Past 10,000 Years (notrickszone.com)