Archive for October, 2011

What it means to call someone a Denier

October 19, 2011

Prof. Deming echoes my sentiments, exactly.

I’m happy to be known as a “denier” because the label of “denier” says nothing about me, but everything about the person making the charge. Scientific theories are never denied or believed, they are only corroborated or falsified.

A scientific theory cannot be “denied.” Only a belief can be denied. The person who uses the word “denier” thus reveals that they hold global warming as a belief, not a scientific theory. Beliefs are the basis of revealed religion. Revelations cannot be corroborated or studied in the laboratory, so religions are based on dogmatic beliefs conservatively held. Religions tend to be closed systems of belief that reject criticism. But the sciences are open systems of knowledge that welcome criticism. I’m a scientist, and therefore I must happily confess to being a denier.

Have you ever considered how difficult it is to take the temperature of the planet Earth? What temperature will you measure? The air? The surface of the Earth absorbs more than twice as much incident heat from the Sun than the air. But if you measure the temperature of the surface, what surface are you going to measure? The solid Earth or the oceans? There is twice as much water as land on Earth. If you decide to measure water temperature, at what depth will you take the measurements? How will the time scale on which the deep ocean mixes with the shallow affect your measurements? And how, pray tell, will you determine what the average water temperature was for the South Pacific Ocean a hundred years ago? How will you combine air, land, and sea temperature measurements? Even if you use only meteorological measurements of air temperature, how will you compensate for changes in latitude, elevation, and land use?

Determining a mean planetary temperature is not straightforward, but an extremely complicated problem. Even the best data are suspect.”




Read his whole statement.


David Deming [send him mail] is a geophysicist, associate professor of arts and sciences at the University of Oklahoma, and author of the books Science and Technology in World History, Vols. 1 & 2.