Olenek is a weather station in the Taymir Peninsular, Northern Siberia, 68.5 N, 112.4 E, altitude : 220 m. For map;
www.warwickhughes.com/climate/taymgrid.gif
For a discussion of Tsurf trends in this region see;
www.warwickhughes.com/climate/tamyr.htm
That’s the introduction and there is plenty of reading and points to explore there, however the purpose of this post is to expose a particularly gross inhomogeneity in Olenek data when compared to its neighbours. A fault not picked up in 15 to 20 years by the three major global climate groups.
This post is seeing the light of day now because Steve McIntyre has a post at ClimateAudit.org (link on right);
Wednesday, March 21st, 2007 at 2:35 pm., “NOAA Gridded Data”.
ClimateAudit is discussing grid cell trends and GHCN data in the old USSR so Olenek fits in exactly with that.
The first graphic just presents Olenek mean annual data as obtained through the three great global climate groups, NOAA (GHCNV2), NASA GISS Dr J Hansen and Climate Research Unit, Dr P D Jones.
www.warwickhughes.com/agri/olx3.gif
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The second shows the Olenek NASA GISS Homogeneity adjusted verrsion differenced against four neighbours.
www.warwickhughes.com/agri/olenekx4.gif

The third shows the glaring inhomogeneity in GCOS max & min data when the DTR is graphed (max-min).
www.warwickhughes.com/agri/olgcos.gif

This monster data aberration passed ALL of the statistical tests of the good and the great.
Yet I did nothing fancy above and the MISTAKE stands out like a waving red flag.
I must acknowledge here the help of some fellow sceptics who participated in discussions re Olenek and other related matters a year ago. Sorry for my writers block.