I don't think this is actually new.
From the article:
"Scientists already knew this "thermal event" happened but are not sure what caused it. Perhaps massive releases of methane from the ocean, the continent-sized burning of trees, lots of volcanic eruptions.
Many experts figured that while the rest of the world got really hot, the polar regions were still comfortably cooler, maybe about 52 degrees Fahrenheit.
But the new research found the polar average was closer to 74 degrees. So instead of Boston-like weather year-round, the Arctic was more like Miami North. Way north."
It's not new. We studied this 40 years ago in high school science. Of course, it is news to the young journalists because they weren't taught this while they were in school. Plus, they stopped learning once they had finished college.
Uh. I knew about this thirty years ago when I was nine. GW is such a fraud.