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Rothamsted Temperature Record - Atmospheric Sulphur to Blame?

Rothamsted Research Sulphur (pdf) gives us a simple graph showing the decrease in Atmospheric Sulphur (No apologies to my valued American visitors, that is how we spell Sulfur!)

Woburn%20Sulphur.jpg

I have previously blogged about how Rothamsted shows a marked increase in minimum temperature compared to other UK sites, and that it probably was the one most affected by the decrease in smoky chimneys. (Woburn is 25 miles north west of Rothamsted and is an outlying station.)

Tmin.jpg

As the amount of Sulphur rose in the 1970s we would expect it to be cold, and as the air is cleaned up starting in the 1980s we would expect it get warmer. The UK sulphur emissions have continued to fall according to official figures mirroring the rise in Rothamsted's minimum temperature.

So why do we not hear more about this huge change in atmospheric pollution, a pollution that the consensus is causes lower temperatures, and vastly more about a much smaller change in the CO2 levels?

Comments

Wouldn't sulphur cause warm nights in the same way it cools the days?

I noticed this pattern of Rothamsted temperature trends(courtesy of some comments and links from Climate Audit). I wonder if it also reflects changes in work practices at Rothamsted (an agriculture research facility; possible increase in overnight working) or changes in the town centre of Harpenden

"So why do we not hear more about this huge change in atmospheric pollution?"
Because it doesn't fit into the church of gorebull warming preachings. That why.

Lets all do our part to stop gorebull warnings.

Thanks - interesting. Woburn is well NNW of Rothamsted so the decline of
sulphur at Rothamsted may be smaller.
....

One might have also expected S pollution to lower Tmax (haze reduces
solar radiation at the surface) but there is no such effect at
Rothamsted in the corresponding plot for Tmax in Parker and Horton 2005.

David Parker - Met Office

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