Dave NC-20 Burton repeatedly claims he's never been shown to be wrong, he also loves claiming that sea level rise has not accelerated over the past century and that Tide Gauges are the gold standard. One of his favorite Tide Gauges is at Brest, France which dates way back. With graph in hand Dave claims “As you can see, there's been no apparent acceleration in sea-level rise there in the last hundred years.”
Interestingly when one looks at that graph through a slightly different filter,
it's not so clear cut at all.
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Here's what happens when scientists do the numbers:
0.42 ± 0.18 mm/year Brest -1800s
1.14 ± 0.18 mm/year Brest -1900s
0.39 ± 0.17 mm/year Liverpool -1800s
1.22 ± 0.25 mm/year Liverpool - 1900s
Tide gauge datum continuity at Brest since 1711: France's longest sea-level record
Guy Wöppelmann, Nicolas Pouvreau, Alain Coulomb, Bernard Simon, Philip L. Woodworth
Now that I've given the punchline, let me back track and focus on one of the important differences between Dave Burton's approach and my own "process".
I love to learn, I want to learn from my mistakes, I thirst for more and better information to help develop my overall understanding of this Earth I love and that we depend on for everything. On the other hand, NC-20 Burton is into repeating agenda focused PR soundbites and refusing to listen to anything anyone else is trying to explain. Never allowing new information to percolate and be incorporated into his overall world view.
We'll start with Burton's spiel:
We'll start with Burton's spiel:
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By far the greatest part of the anthropogenic contribution to GHG levels has occurred since the 1940s. What matters for validating or falsifying the hypothetical causal relationship between GHG levels and sea-level rise is what happened to the rate of sea-level rise in response to the addition of all that CO2 & CH4.
The answer is, nothing at all. Increasing CO2 from under 310 ppmv to ~400 ppmv, and increasing CH4 from 1.2 ppmv to 1.8 ppmv, has caused no increase at all in the rate of sea-level rise.
