Arctic winter temperatures have warmed over the last 30 years. People claim this is due to the “greenhouse effect” – as shown above. The Sun shines through the atmosphere easily, but LW radiation has a more difficult time returning to space. As your Prius dumps more CO2 into the air, you literally fry Polar Bears in the blazing heat.
Makes perfect sense … as long as you don’t actually use your brain ….
The Sun doesn’t shine in the Arctic in winter. The Sun plays kind of an important role in the greenhouse effect.
So what is really happening up there in the frozen north?
Temperatures in Alaska jumped up in 1978 by about three degrees and then flattened. Was this due to a sudden one-time increase in CO2? Probably not.
To see what really happened in 1977-78, I overlaid the Alaska temperature graph on the ENSO graph. The PDO shift of 1977 gave Alaska a one-time temperature boost
Conclusion : Arctic winter warming is obviously due to ENSO – not the greenhouse effect.