Category Archives: NCDC – GHCN Issues

Problems and issues in the GHCN and other data sets from NCDC the National Climate Data Center, of NOAA.

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

Advertisements
Posted in AGW Science and Background, NCDC - GHCN Issues | Tagged , , | 17 Comments

Updated GHCN Load Scripts & Reduced Warnings

And inproved version of the MariaDB / MySQL database and data loading scripts, with run times and discussion. Many warnings removed and one data loading bug fixed. Continue reading

Posted in NCDC - GHCN Issues, Tech Bits | Tagged , , , , | 11 Comments

The Inconsistency Screwage Of GHCN

GHCN definitions of what is a country and what is a WMO station are painfully fluid. Continue reading

Posted in NCDC - GHCN Issues | Tagged , , | 2 Comments

GHCN v3.3 vs v4 Asia Anomaly

Comparison graphs of the GHCN Global Historical Climate Network version 3.3 vs version 4 temperature data anomalies. Continue reading

Posted in AGW Science and Background, Global Warming General, NCDC - GHCN Issues | Tagged , , , , | 11 Comments