He Who Controls the Present Controls the Past… | Power Line
...Note that zero–no adjustment–is near the top of the Y-axis. Almost all past temperatures have been adjusted downward, compared with the temperatures that were actually recorded at the time. During the Dust Bowl years of the 1930s, when many record high temperatures were recorded, the readings have been adjusted downward by, generally speaking, one to one and a half degrees. These adjustments stop abruptly in the late 1990s. The effect of the adjustments is to make the past look cooler in relation to the present.
This kind of manipulation of data, changing the historical record after the fact, is done ALL THE TIME by the climate alarmists who crank out all of the data that are reported on in the newspapers. And the adjustments are always the same: they make the past cooler, so that the present will look warmer, in order to support their power-grabbing climate hysteria agenda. Whenever you hear on the radio that a temperature reading is the “warmest ever” in a particular place, you can reasonably assume that the “warmest ever” title was conferred by falsely reporting temperature readings from past decades.
This is, in my view, the biggest scandal in the history of science. I can’t think of any competitor that could even come close.