Five Years Of GISS Cheating

By Paul Homewood

I looked at the latest batch of GISS temperature adjustments the other day. As I mentioned, in themselves they are relatively insignificant. But cumulatively, they do add up.

We can see this by comparing the 2011 version of global land temperatures with the current version.

First, this is what GISS published in Nov 2011. It is not available on their website, but I managed to track it down anyway:

http://data.giss.nasa.gov/gistemp/tabledata_v2/GLB.Ts.txt

I have not shown the full list, but you get the idea.

Now, let’s compare with the current version:

http://data.giss.nasa.gov/gistemp/tabledata_v3/GLB.Ts.txt

If we look at the last full year of the 2011 version, i.e. 2010, the annual temperature anomaly has risen from 0.83C to 0.91C, an increase of 0.08C.

And if we go back to 1941, we find that the anomaly has dropped from 0.11C to 0.01C.

Cooling the past and warming the present! Now where have we heard that before?

In terms of the amount of warming since 1941, these adjustments to the historical record just since 2011 have added 0.18C to the trend.

We know that other, similar adjustments have been made to GISS LOTI numbers prior to 2011, but we don’t know the split between land and ocean. Unfortunately, the Wayback Machine cannot help us, and GISS themselves don’t archive any of this information.

The full extent of changes going back to 1881 can be seen below:

I guess that is what they mean by man made warming!