Originally posted on Watts Up With That?:

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.

sl_ns_global[1]

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:

View original 70 more words

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