By Paul deWitt

Do you have a point you’d like to make or an issue you feel strongly about? Submit a letter to the editor or a guest column.

In The Bulletin’s March 25 edition, Evelyn and Barry Sherr took “climate deniers” to task for daring to question the orthodoxy about climate change and anthropogenic global warming (AGW). Like other proponents of AGW and climate alarmism, they assert “(t)he science is indeed settled: current human-caused warming is truly unprecedented. The rapid increase in global temperature is caused by buildup of carbon dioxide in the atmosphere due to burning of fossil fuels.”

There is one problem with this assertion: It simply is not true. It is what the climate change industry wants us to believe so that they can continue to extort billions of dollars from local, state and federal governments that have been cowed into submission by the purveyors of disinformation about climate change.

Despite the claims of the alarmists, the increase in temperature is about 1 degree Celsius for each doubling of carbon dioxide (CO2), or roughly 0.5 degrees C per 20 parts per million. Given the rate of change in CO2 from the current level of 400 ppm, a 1 degree C rise would take centuries. In fact, all available evidence, including ice core data, shows that CO2 is a trailing factor: It follows rather than precedes atmospheric temperature changes and therefore does not cause them.

Here are some basic and irrefutable facts about the climate:

• The climate has been warmer (and colder) in the past.

• There have been more and fewer storms in the past.

• There have been greater droughts in the past and greater rainfall/floods.

• Man emits 4 percent of annual CO2 emissions, nature 96 percent.

• Most unprecedented weather is actually not. (Weather records go back 100 to 150 years; current interglacial goes back 10,000 years; climate goes back billions of years.)

• Prior warm periods during the Holocene interglacial period were warmer than today and did not involve any burning of fossil fuels. They go by the civilizations that they spawned: Greek, Roman and medieval.

• There was an extended ice age some 450 million years ago, when CO2 levels were 11 times higher than today.

• According to Dr. Gordon Fulks, the global temperature anomaly (GTA) dropped in February to 0.2 C above the satellite era average, following a spectacular decline in the Northern Hemisphere, as documented by Dr. Roy Spencer at the University of Alabama in Huntsville. This decline came from a La Niña developing off the coast of Peru. The warmer than normal years 2016 and 1998 were caused by El Niño events (

• Dr. Fulks states that the oceans contain the vast majority of mobile heat on the planet, and this mobile heat substantially drives our weather and climate.

An excellent source of information is A Tutorial on Climate Change by Drs. William Happer, Steven Koonin and Richard Linzen, available at The CO2 Coalition,

Prepared in response to a request from a federal district court judge, the tutorial clearly and objectively explains the science of climate change.

The states of Oregon, California and Washington are taking extraordinary steps to curb carbon emissions in an attempt to curtail global warming.

These steps, which include restrictions on carbon emitting industries and transport of oil and coal products for export, will have virtually no impact on the climate.

These states emit 2 percent of the world’s carbon. Oregon’s contribution is one-tenth of 1 percent.

The efforts of the three states to implement carbon taxes on industry will kill jobs while having no measurable effect on the climate.

Instead of chasing the ephemeral goal of mitigating climate change, climate alarmists could spend their time and government resources more productively on real ecological problems, such as the mountain of plastic floating in the Pacific or the mismanagement of forests resulting in catastrophic fires.

These problems, if solved, will do more to improve the environment than the billions of dollars wasted on climate studies and ill-advised attempts to control an essential gas that is beneficial to all life.

— Paul deWitt lives in Bend.