People send me stuff. Here we have another case of value added adjustments that increase the slope, much like temperature.
This email forwarded from Steve Case reads as follows:
The University of Colorado’s Sea Level Research Group just published the 2013 Release #1 of their Global Mean Sea Level Time Series.
I discovered that these periodic releases are on the net all the way back to 2011 Release #1. So I downloaded all nine of them.
2012 release #1 has 628 entries up to January of 2011 so I had Excel’s slope function calculate the rate of sea level rise for that time series of 628 entries across all nine releases.
What I found is that the rate of sea level rise has been bumped up twice since then, once in 2011 and the the latest in the current release. Here’s a link to a graph to illustrate the point:
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