Further Investigations on Errors in Weather Station Data Evaluations
17 hours ago
Moritz Büsing
In a previous article on WUWT I described how I found and corrected an error in the way weather station data is processed in order to calculate the temperature anomalies of the past 140 years.
The error was that warming of the weather station housings due to ageing of the paint by 0.1°C to 0.2°C (0.18°F to 0.36°F) was compounded multiple times by the so-called homogenization algorithms used by NOAA and other organizations. This happens, because the homogenization algorithm assumes a permanent change in temperature when the station housing is repainted, replaced, or even cleaned. But these changes are temporary, because the new paint starts ageing and accumulating dirt again.
In this first investigation I analyzed two sets of data provided by NOAA: The temperature data from thousands of weather stations around the world before and after homogenization. I determined how much the weather stations warmed on average after each homogenization step. Then I removed this warming from ageing.
https://wattsupwiththat.com/2024/02/01/further-investigations-on-errors-in-weather-station-data-evaluations/
