Between my Air Force & civilian careers, I made many trips to Thule Greenland between 1982 & 2014. I'm not a scientist or a tree hugging environmentalist, but the changes in the snow cap were obvious. I've lived in Colorado since the early '70s and the weather changes are obvious over the years.
Really? Here is the Vostok Ice Core graph with 450,000 years of "climate change". Explain the constant and rythmical climate variations you see over that time.