Which Data to Believe

Re-Blogged From WUWT

Today, at the big 100 year anniversary shindig of the American Meteorological Society (AMS) there was a press release session that featured NOAA and NASA GISS talking about how their climate data says that the world in 2019 was the second warmest ever.

Here is their slideshow presentation, released today: https://www.ncdc.noaa.gov/sotc/briefings/20200115.pdf

In my opinion, the NOAA/NASA press release (and slideshow) is inconsistently presented. For example, they can’t even agree on a common base period for comparisons. Some graphs use 1951-1980 while others compare to 1981-2010 averages to create anomaly plots. NOAA and NASA owe it to the public to present climate data with a consistent climate period for comparison, otherwise it’s just sloppy science. NASA GISS has consistently resisted updating the 1951-1980 NASA GISS baseline period to the one NOAA and other datasets use, which is 1981-2010. GISS stubbornly refuses to change even though they have been repeatedly excoriated for keeping it.

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2017 Global Temperatures are Leveling Off

By Anthony Watts – Re-Blogged From http://www.WattsUpWithThat.com

From the “dashed hopes for the warmest year evar!” department comes this update from Dr. Ryan Maue on the global surface temperature:

Via Twitter:

Global temperatures have generally settled to +0.26°C compared to 1981-2010 climatology continuing downward glide thru 2017 (black line)

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