Have risen since 1850 by ~ 0.8 °C (1.44°F)
Look at the way the figures leap up the page…. that’s really scary !!!
(so James Hanson & Al Gore must be right, “the seas will boil” “Antarctica will be the only place to live” !! )
Well maybe not –
Look at the distorted side scale; it doesn’t show average temperatures
…it only shows the 0.8 °C difference over 130 years (0.006 °C/yr)
Now, this is what the same 0.8 °C (1.44°F) global warming really looks like,
When viewed on a proper graph showing average temperatures
The Lloyd study looked at the last 80 centuries and found nothing unusual or unprecedented about our slight recent warming. In fact he found about an average 1 C deviation per century.
Our warming comes after the end of one of the coldest periods of the last 10,000 years, called the Little Ice Age (LIA). And the HAD 4 data only shows about 0.8 °C since 1850.
Here’s the Lloyd study –
‘An Estimate of the Centennial Variability of Global Temperatures’ – 8 pages- https://www.researchgate.net/publication/276276180_An_Estimate_of_The_Centennial_Variability_of_Global_Temperatures
A close-up of the recent anomaly.
Showing “the pause”
No global warming for 18 years 8 months; full explanation – https://wattsupwiththat.com/2015/08/06/the-pause-draws-blood-a-new-record-pause-length-no-warming-for-18-years-7-months/
From un-tampered RSS satellite datasets http://www.remss.com/research/climate
The graph shows the entire RSS (lower-troposphere ) satellite dataset for the 440 months January 1979 to August 2015, with the blue trend on the entire series equivalent to just over 1.2 °C rise/century.
The overlaid graph in green is the zero trend in the 224 months since January 1997 – more than half the entire 440-month record.
“Our planet is cooking & heating up & warming” Aaron Mair President of the Sierra Club 2015
See also http://models.weatherbell.com/
Climate scientists are getting increasingly fed up with the main global warming skeptic – See here.