Corporate-funded networks have been busy this year spreading the idea that the Earth is cooling, rather than warming. They’ve got a lot of money at their fingertips to engage in this propaganda campaign, but they do have a little speed bump to confront in their race to denial: Observed facts gathered by scientists.
This graph shows Arctic climate trends over the last two thousand years, showing that, until the Industrial Revolution kicked into high gear, the Arctic was cooling, but has been engaged in sudden, rapid warming since. Of course, there weren’t thermometers planted around the world until relatively recent history. Temperature records don’t go back two thousand years, but they can be estimated after the fact through the combined examinations lake sediments, ice cores and tree rings. That’s what researchers at the University Corporation for Atmospheric Research did in order to construct this the blue line in this graph of temperature anomalies in the Arctic. The red line shows direct observations, not a climate model projection.
I’d like to hear from those people who repeat the corporate claim that the Earth is currently cooling, rather than warming, how they think the scientific measurements shown in this graph fit with that idea.