Putting the Brakes on Satellite Acceleration

Watts Up With That?

Guest Post by Willis Eschenbach

I discussed acceleration in the tide gauge records in a previous post. However, people are also claiming that either there is acceleration in the satellite record or there will soon be acceleration. So I thought I’d take a look at the satellite-measured sea level question. First, here’s the satellite data:

satellite sea level to 2016

Figure 1. Satellite-measured global sea level changes, 1993-2016

There are several interesting things about this. First, IF the data is correct the sea level goes up and down a lot. The monthly jump averages about three and a half millimetres, which is larger than the average annual increase.

Next, the rise is far from monotonic, with the Gaussian average (shown in red) actually decreasing about one month in six.

So … is sea level rise accelerating? Visually you’d have to say no, but that’s why we have math. However, in this case, the…

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