Category Archives: NOAA

How to normalise temperature anomalies

Posted on June 30, 2017 by Clive Best

Update 2/7/17: I used the wrong GISS data (land only) in the comparison as pointed out by @cce! Agreement now is reasonably good for all temperature series. This is my crib sheet for comparing temperature anomalies across ground and satellite … Continue reading →

Posted in AGW, IPCC, NASA, NOAA, UK Met Office | Tagged | 18 Comments

Nights warm faster

Posted on April 19, 2017 by Clive Best

NOAA’s Global Historical Climatology Network (GHCN) publishes 3 different monthly temperature sets for each of the ~7000 weather stations. 1) Average Temperatures 2) Minimum Temperatures 3) Maximum Temperatures. Seasonal variations are averaged out over a 30 year normalisation period to … Continue reading →

Posted in AGW, Climate Change, climate science, NOAA | Tagged , | 40 Comments

Tweaking Global Temperature Data

Posted on March 11, 2017 by Clive Best

The “kriging” biases described in the previous post can be mostly avoided by using  ‘spherical’ triangulation. This treats the earth as a sphere and triangulates all measurement points onto the earth’s surface.  In this case vertex angles no longer add … Continue reading →

Posted in Climate Change, NOAA | Tagged , | 15 Comments