Tucson’s March for Science – a plea for continued climate funding

The several “Marches for Science” (held April 22) around the country are not really about science, but about fear that President Trump’s proposed cuts to the EPA and other agencies for climate research will make federal grants disappear. It’s about the money, not the climate.

A front page story in the Arizona Daily Star ( 4-14-17) was about Tucson’s “March for Science.” (Link) They called off the march itself, because they could not afford the price “to barricade North Stone Avenue, hire off-duty police and medics, and take out insurance.” Instead, they settled for a rally on Saturday.

The article featured University of Arizona professor Scott Saleska who is concerned that cuts to the EPA budget will jeopardize his research funding. The article quotes part of a letter which Saleska and other professors sent to EPA head Scott Pruitt.

Here is the money quote: “In fact, we know with an exceptionally high degree of confidence that most of the climate warming over at least the last six decades has been caused by rising levels of carbon dioxide and other greenhouse gases in the atmosphere due to the burning of fossil fuels and other human activities.”

I emailed Dr. Saleska (on April 14) asking this question: “What specific physical evidence supports the contention that CO2 emissions from burning fossil fuels is the principal cause of recent warming? Note: computer simulations are not physical evidence. Consensus is not physical evidence.”

Dr. Saleska replied on Thursday, April 20. Rather than citing specific evidence, he deflected the question: “My apologies for the slow reply. Busy week. But you raise an interesting question. What kind of evidence are you looking for? That is, what evidence would, in your mind, support the contention if it were observed?”

My response: “I think physical evidence supporting your contention does not exist because the hypothesis is wrong. So again, what physical evidence do you have in support?”

I have posed that same question to four other UofA “climate science” professors during public meetings. None could cite any supporting physical evidence. Strange that they all have an “exceptionally high degree of confidence” but can cite no physical evidence.

Once upon a time, science was based on empirical evidence rather than politics.

Most of the climate models make the assumption that CO2 is the main driver of global temperature. That assumption, however, causes model output to diverge widely from observations, showing that the assumption is wrong:


On the national “March for Science” website (link) is this statement: “We unite as a diverse, nonpartisan group to call for science that upholds the common good and for political leaders and policy makers to enact evidence based policies in the public interest.”[emphasis added] Where is the evidence for the policy on global warming?

In my opinion, climate science has turned into political science and many professors fear that “draining the swamp” will kill their cash cow.

See some real physical evidence:

Evidence that CO2 emissions do not intensify the greenhouse effect