A hotter world
Robertscribbler has posted an article today, A Terrifying Jump in Global Temperatures — December of 2015 at 1.4 C Above 1890, the two most important take-aways were the following”
"According to today’s report from Japan’s Meteorological Agency, global temperatures jumped by a ridiculous 0.36 degrees Celsius from the period of December 2014 — the previous hottest December in the global climate record — through December 2015 — the new hottest December by one heck of a long shot"
"Taking a look at this amazing monthly jump in global temperatures in terms of longer timeframes, we find that December of 2015 came in at 1.05 C above the 20th Century Average and a terrifying (yes, no other word can describe) 1.42 C departure from average temperatures at the start of the record during 1890."
These two figures relate to
- the 20th -century average (1.05C), and
- departure from average temperatures at the start of the record during 1890 (1.42C)
The figure that was used until some months ago is that the world is (or rather was) 0.8 degrees warmer than baseline.
I decided to ask Guy McPherson exactly what this baseline was.
His reply was 0.85 degress Celsius since ~1750.
Which means that the relative increase in temperature is larger still.
Much higher, he said.
The following is the graph he uses to illustrate his point.
Here is an article Guy wrote several months ago on near-term habitat loss for humans
Near-term Habitat Loss for Humans
22 July, 2015
Fact: This planet has not harbored humans at 3.3 C or higher above baseline (i.e., the beginning of the industrial revolution). The number may be much lower. The jury is still out.