Some comment replies require more than just a few brief lines.
In the last post I graphed the average temperature for 2015 so far with the annual averages prior to that. It’s certainly not the clearest way to show things, and someone who doesn’t read the text and pay close attention could get the wrong impression. It was also pointed out that there may be seasonal differences in the way temperature has changed; maybe January through April has behaved differently than other times of the year. Finally, the inherent scatter in a 4-month average is bound to be higher than that in an annual average.
In an attempt to present things more clearly, here are a few more views of where we are. We’ll begin with year-long averages for all the data points, but to include the most recent data let’s end each year with April. Here is the average temperature for each May-through-April period since 1880:
Since last year was the hottest on record, many people have trained a keen eye on this year’s temperature data so see how it will compare with last year’s record-breaker.
So far, it’s a hot one indeed. How hot? NASA has just released the global temperature data for April, and although we only have four months of data for the year so far, some of the folks at home are wondering how this-year-so-far compares to previous years’ temperatures. Here you are:
From time to time the boys at WUWT and elsewhere, rather than dole nonsense in bite-size morsels, are so kind as to serve up a compendium, a cornucopia if you will. I know they truly want to persuade people that man-made global warming is no problemo, but I wonder whether they’re quite aware of what they’re doing; this kind of bounty doesn’t do their image much good.
In a recent post, Jean-Pierre Bardinet outlines what he refers to as “22 Very Inconvenient Climate Truths,” which he subtitles “Here are 22 good reasons not to believe the statements made by the Intergovernmental Panel on Climate Change (IPCC).”
Since I am not an employee of the Florida state government under their science-denying governor Rick Scott, I’m allowed to say the following phrases: “climate change” and “global warming.”
I’m also able to mention those topics when discussing sea level rise. In the hope that I can annoy Florida’s science-denying governor Rick Scott by flying in the face of his denial of science itself, I’ll print the truth for all Floridians (and others) to see: sea level rise is being caused by man-made climate change, also known as global warming.
Barton Bibler, who works for Florida’s DEP (Department of Environmental Protection), actually spoke about climate change at an official meeting. He even (gasp!) kept notes of the discussion in official minutes.
I’m skeptical. In particular, about this idea that the rate of global warming at Earth’s surface has recently exhibited a slowdown.