But if you take the last 6 winters/early spring you see a clear, and strong cooling anomaly centred on the Great Lakes.
This also shows up in lake ice coverage.
And then there was the paper from earlier in the year:
https://phys.org/news/2019-05-arctic-weather-extremes-latitudes.htmlAtmospheric researchers at the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI) have developed a climate model that can accurately depict the frequently observed winding course of the jet stream, a major air current over the Northern Hemisphere. The breakthrough came when the scientists combined their global climate model with a new machine learning algorithm on ozone chemistry. Using the combined model, they demonstrate that the jet stream's wavelike course in winter and subsequent extreme weather conditions like cold air outbreaks in Central Europe and North America are the direct result of climate change.
....
In addition, with the new model the researchers can also more closely analyze the causes of the meandering jet stream. "Our study shows that the changes in the jet stream are at least partly due to the loss of Arctic sea ice. If the ice cover continues to dwindle, we believe that both the frequency and intensity of the extreme weather events previously observed in the middle latitudes will increase," says Prof Markus Rex, Head of Atmospheric Research at the AWI. "In addition, our findings confirm that the more frequently occurring cold phases in winter in the U.S., Europe and Asia are by no means a contradiction to global warming; rather, they are a part of anthropogenic climate change."
These papers seem to contradict one another... and yet there is no way for me to determine which one is correct... frustrating.