Mes: agosto 2016
From “not a lot of people know that” about NASA’s world temperature anomaly estimate.
By Paul Homewood
From Climate Change Dispatch:
Has anyone looked at the recent National Aeronautics and Space Administration Goddard Institute for Space Studies (NASA GISS) Surface Temperature Analysis? A chart of it was used in a recent Australian Broadcasting Company debate on global warming to make the case that surface temperatures have risen continuously during the past 20 years.
There’s a pretty blatant problem with the NASA chart, however. And it’s a fault that anyone with even a cursory knowledge of climate studies would recognize.
The NASA GISS analysis essentially eliminates the 1998 El Niño. Instead of the ’98 El Niño towering above neighboring years, thanks to its massive release of stored Pacific Ocean heat content, 1998 is simply depicted as one rung on an ever-climbing temperature ladder. And then, suddenly, there’s 2016, with an El Niño that explodes far above all of the preceding years.
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Excellent outline of extreme weather event attribution “science”
The media is again awash with claims of “human footprints” in extreme weather events, with headlines like these:
“Global warming is making hot days hotter, rainfall and flooding heavier, hurricanes stronger and droughts more severe.”
“Global climate change is making weather worse over time”
“Climate change link to extreme weather easier to gauge”– U.S. Report
“Heat Waves, Droughts and Heavy Rain Have Clear Links to Climate Change, Says National Academies”
That last one refers to a paper just released by the National Academy of Sciences Press: Attribution of Extreme Weather Events in the Context of Climate Change (2016)
And as usual, the headline claims are unsupported by the actual text. From the NAS report (here):
Attribution studies of individual events should not be used to draw general conclusions about the impact of climate change on extreme events as a whole. Events that have been selected for attribution studies to date…
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