Tag Archives: GHCN

GHCN v3.3 vs v4 Anomaly Graphs – Europe

Graphs comparing the Anomaly and the Change of Anomaly for the countries of Europe in the GHCN Global Historic Climate Network for Version 3.3 vs Version 4 showing changes of historical values for data and the shape of changes mead. Continue reading

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GHCN v3.3 vs. v4 Anomaly Graphs – Africa

The GHCN v3.3 vs v4 Anomaly Graphs for Africa. Continue reading

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Dijibouti – Why? What Changed?

How can a set of static historical thermometers suddenly cool the past and warm the recent times? Continue reading

Posted in AGW Science and Background, Global Warming General, NCDC - GHCN Issues | Tagged , , | 33 Comments

What Difference Does Instrument Selection Make To Anomaly Processed Temperature Data?

I’ve wanted to do an A/B Comparison of “Anomaly Processed Temperatures” with changed instruments since the very first time I ran GIStemp, about a decade ago. Here, I finally get to “scratch that itch”. The claim is made that since it is all “done with anomalies” the actual instruments used does not matter. Here I show otherwise. Instrument selection DOES change the anomalies produced. Continue reading

Posted in AGW Science and Background, NCDC - GHCN Issues | Tagged , , | 18 Comments