Larry Hamlin has shown us all, in a post at WUWT, how warped and twisted is the thinking of those who call themselves “skeptics” about climate change, but are actually deniers.
This one is about sea level rise. The headline reads “30 years of NOAA tide gauge data debunk 1988 Senate hearing climate alarmist claims.” The theme is that James Hansen’s 1988 testimony (when he warned of the danger of climate change) was “alarmist” and that NOAA data (about sea level, taken from tide gauges) over the last 30 years “debunks” something.
NOAA has updated its coastal tide gauge measurement data through year 2018 with this update now providing 30 years of actual data since the infamous 1988 Senate hearings that launched the U.S. climate alarmist political propaganda campaign.
What, you might wonder, does the last 30 years of NOAA tide gauge data debunk? According to Hamlin, it’s this:
In all more than 200 coastal locations are included in these measurements with more than 100 of these coastal locations with recorded data periods in excess of 50 years in duration. None of these updated NOAA tide gauge measurement data records show coastal location sea level rise acceleration occurring anywhere on the U.S. coasts or Pacific or Atlantic island groups.
So that’s it! Hamlin is claiming that data from the last 30 years fails to show any sea level rise acceleration, anywhere in the U.S. or island groups.
How did Hamlin determine that the new data (since 1988) fail to show acceleration? That’s a bit harder to figure out. He does give us a clue, however, by highlighting the longest tide gauge record we have:
The longest NOAA tide gauge data record is at the Battery, New York with a 162 year long measurement period. This location along with all other NOAA U.S. coastal locations show no sea level rise acceleration occurring over the past 30 years despite scientifically flawed assertions otherwise by climate alarmists.
Aha! So that is his “proof.” He says so!
Maybe you’re not convinced. But wait — he shows a graph!
Since Larry Hamlin puts such faith in actual data, let’s look at what this graph shows: the actual data.
Note that the top of Hamlin’s graph (it’s actually from NOAA, not from Hamlin himself) says the average rate of sea level rise during the entire time span is 2.85 mm/yr. What say the last 30 years’ data? This:
Hmmm… Note that the rate is considerably higher than it was over the entire time span. And, the difference is statistically significant! That means, that the rate over the last 30 years is demonstrably higher than it was, on average, prior to that.
What do we call it … ? … when the rate of increase gets higher … ? … what’s the name for that? Oh yeah! It’s called acceleration.
Here’s why I call this truly twisted: to disprove Hamlin’s claim of “no acceleration anywhere,” all you need is one tide gauge station, namely the one he himself chose to highlight, and the only part of that you need is the last 30 years, the time span he himself chose. He says “This debunks acceleration” when in fact, in the specific case he shows himself, “This proves acceleration” is more like it.
If you want more proof, I’ve got oodles. If Larry Hamlin himself comments here and asks, I’ll be delighted to show how wrong he is in another six ways. As for the 2nd graph from Hamlin (actually from NOAA, he didn’t make it himself): if he comments here himself and asks, I’ll be happy to show him why that too is a nothing-burger. In fact, for his purpose it’s a “not-even-wrong” burger.
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