Warmth ≠ warming

In my previous post I said that, since the temperature hasn’t gone up (much) in about 15 years, nothing has happened as a result – in short, global warming hasn’t caused anything, harmful or otherwise.

That short chain of reasoning seemed justified by the observed and documented lack of significant warming of the near-surface atmosphere around the globe during the last 15 years, and I thought the logic unassailable.

The above link shows the HadCRUT3 record, but you’ll see a very similar trajectory with the GISTEMP dataset, UAH, RSS or NCDC. All of these records show that, from about 1997, there’s been precious little warming or cooling and that the global monthly mean temperature anomaly has, in the last six months or less, steeply descended through exactly the same band through which it rose in 1997.

To repeat: because global warming hasn’t occurred for about 15 years, global warming hasn’t caused anything else to occur in that time. Very simple. Continue Reading →