By Andy B. Hammond, 1 year ago

'At our present level of ignorance, we think we know . . .'

Despite what the MSM, Liberals, and the Nobel Peace Prize selection committee who believe humans are the cause of global warming say, there are real scientists out there who believe otherwise. In fact, there is one on the U.N.'s Intergovernmental Panel on Climate Change (IPCC) and shares a piece of the 2007 Nobel Peace Prize. That's right, believe it or not, John R. Christy, the director of the Earth System Science Center at the University of Alabama in Huntsville and a member of the IPCC and Nobel Peace Prize recipient does not believe that humans are the cause of global warming. He wrote a piece in the Wall Street Journal yesterday called My Nobel Moment.

I'm sure the majority (but not all) of my IPCC colleagues cringe when I say this, but I see neither the developing catastrophe nor the smoking gun proving that human activity is to blame for most of the warming we see. Rather, I see a reliance on climate models (useful but never «proof») and the coincidence that changes in carbon dioxide and global temperatures have loose similarity over time.

He goes on to explain how complex our climate system is and how difficult it is to build a reliable model of how our climate currently operates, much less how it will be in the future.

Mother Nature simply operates at a level of complexity that is, at this point, beyond the mastery of mere mortals (such as scientists) and the tools available to us. As my high-school physics teacher admonished us in those we-shall-conquer-the-world-with-a-slide-rule days, «Begin all of your scientific pronouncements with 'At our present level of ignorance, we think we know . . .'»

I pulled the title of this post from the above quote because it presents a humble and wise message we should all follow when making such pronouncements on issues as complex as climate change. Rather then blame human activity as the cause of the climate change we are seeing today, he reminds us that «everything we've seen the climate do has happened before.»

Others of us scratch our heads and try to understand the real causes behind what we see. We discount the possibility that everything is caused by human actions, because everything we've seen the climate do has happened before. Sea levels rise and fall continually. The Arctic ice cap has shrunk before. One millennium there are hippos swimming in the Thames, and a geological blink later there is an ice bridge linking Asia and North America.

He also challenges those who report and study climate change to have a global perspective. It's important to understand that one area of the planet might be experiencing warming while another cooling. For example, the Arctic ice sheets are shrinking but the Antarctic ice is actually setting records in growth.

One of the challenges in studying global climate is keeping a global perspective, especially when much of the research focuses on data gathered from spots around the globe. Often observations from one region get more attention than equally valid data from another.

The recent CNN report «Planet in Peril,» for instance, spent considerable time discussing shrinking Arctic sea ice cover. CNN did not note that winter sea ice around Antarctica last month set a record maximum (yes, maximum) for coverage since aerial measurements started.

Christy closes his piece by exploring the futility of our actions to reduce CO2 emissions and the human price of trying to do so. To make even a dent we would have to build 1000 new nuclear power plants, which would possibly slow warming by .2 degrees per century.

But what is the economic and human price, and what is it worth given the scientific uncertainty?

My experience as a missionary teacher in Africa opened my eyes to this simple fact: Without access to energy, life is brutal and short. The uncertain impacts of global warming far in the future must be weighed against disasters at our doorsteps today. Bjorn Lomborg's Copenhagen Consensus 2004, a cost-benefit analysis of health issues by leading economists (including three Nobelists), calculated that spending on health issues such as micronutrients for children, HIV/AIDS and water purification has benefits 50 to 200 times those of attempting to marginally limit «global warming.»

Given the scientific uncertainty and our relative impotence regarding climate change, the moral imperative here seems clear to me.

15 comments

Gravatar #1. Colby Natale
1 year ago

You seem to miss the point of the statement «At our present level of ignorance, we think we know». While I have always agreed that global warming deniers could</i? be right, the stakes are too high too take that chance. The ignorance quote doesn't imply that you do nothing simply because you might be wrong; if it did we scientists would never act at all out of the possibility they might be wrong, regardless of how small that chance might be.

Instead, the quote suggests the kind of open-mindedness that only scientists are capable of. Today we read the evidence and draw the best conclusions that we can; that happens to be that there is a good deal of evidence that humans cause global warming so we can takes some steps to mitigate it. Tomorrow, if the evidence changes, so will our level of ignorance and then we can make new decisions based on new evidence.

Regardless of all of that, every day we must make the most educated choices we can make. To advocate inaction because of the possibility of being wrong is just nuts.

Gravatar #3. carol
1 year ago

Andy thanks for blogging this. I heard about the guy yesterday but didn't have time to look into it.

Gravatar #4. Mills
1 year ago

I don't have a problem with science being wrong. I just have a problem with people betting my money on it, a point Mr. Natale consistently overlooks.

Gravatar #5. Colby Natale
1 year ago

I don't have a problem with global warming deniers putting their cash before everything else. I just have a problem with people risking my kids' future for their stupid money, a point Mr. Mills and his anti global warming crowd consistently overlooks.

Gravatar #6. Craig
1 year ago

Using Pascal's Wager as a rationale for global warming furthers my belief that Global Warming is more religion than science.

Gravatar #7. Poptech
1 year ago

Anyone who thinks their children are in danger from 1-2mm [IPCC] of sea level rise per year should seek medical help.

Gravatar #8. Andy B. Hammond
1 year ago

Colby,
I get the point of the statement. To advocate action based on unproven theories derived from relatively simple computer modeling is equally nuts.

Gravatar #9. Mills
1 year ago

Colby is probably betting on a record number of hurricanes this season, also. I just hope he didn't do it with his kids' college money.

Gravatar #10. Colby Natale
1 year ago

Craig,
Using Pascal's wager to draw comparisons from global warming to religion is cheap because, while we might not have perfect evidence for global warming, we certainly have far more «proof» for it than we do for the existence of a deity.

Gravatar #12. Andy B. Hammond
1 year ago

Colby,
There is no «proof». Everything that's happening in the climate today has happened many, many times before for billions of years. You and the global warming folks are «assuming» humans are causing the warming. We just happen to be on the planet the same time as a natural and normal warming is occurring. No need to get all worked up about it.

Gravatar #13. Colby Natale
1 year ago

There is proof that it is abnormally high compared to every other instance of warming we have evidence for. How does your neat little theory explain that coincidence; that we have never seen warming as high as we have once the industrial revolution starts?

Gravatar #15. Andy B. Hammond
1 year ago

Your claim is probably true in our short existence on earth and from the very, very short period of time we have been able to measure. But there is also evidence that the planet has been much warmer and much cooler throughout it's geologic history.

Not only that, how do you explain Mars' climate change warming the same time as ours?

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