Tuesday, April 13, 2010

The impact of war on GHCN observations

For computational reasons I've been studying the Schur complement of the matrix involved in LSS fitting of temperature models. That sounds hopelessly geeky, but it's just something which is basically a measure of the number of missing values in the GHCN station data. If I can predict them, I can get a much faster algorithm. So I plotted the diagonal, and ...

A pretty dranatic marker of the effect of world wars on Met observations.


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