Rep. Gary Palmer Tries To Stir Up Climate Change Controversy That Just Doesn’t Exist
The following post first appeared on As the years go by, all those stations undergo various types of changes: This can include shifts in how monitoring is done, improvements in technology, or even just the addition or subtraction of nearby buildings.
For example, a new building constructed next to a monitoring station could cast a shadow over a station, or change wind patterns, in such ways that could affect the readings. Also, the timing of temperature measurements has varied over time. And in the 1980s, most U.S. stations switched from liquid-in-glass to electronic resistance thermometers, which could both cool maximum temperature readings and warm minimum readings.
Monitoring organizations like NOAA use data from other stations nearby to try and adjust for these types of issues, either raising or lowering the temperature readings for a given station. This is known as homogenization. The most significant adjustment around the world, according to NOAA, is actually for temperatures taken over the oceans, and that adjustment acts to lower rather than raise the global temperature trend.