Anthropogenic Temperature Change

On my second visit to Weather Underground last month I found that the Mean Temperatures of my Ten Stations were now being delivered to one decimal place (in degrees Fahrenheit). Maximum and minimum daily temperatures were still presented in whole degrees. I was happy with this change but dismayed on the next visit to find the more accurate mean temperatures rounded again to whole degrees.

Not that it matters much. Converting the Fahrenheit data offers the opportunity to present the Centigrade temperatures to two decimal places. This semblance of greater accuracy makes me feel better but nobody should be fooled.

Halfway through this meteorological year and it is still not clear that there is a long term trend to the greater warming of “Climate Change” or the cooling brought on by the promised Grand Solar Minimum.

Here are two Tables for Week 26, with Durham Tees figures added, replacing the no longer available Whitby/Filey data.

26_Table1

After several decidedly cool weeks, warmth returned to North East England – and five of the Ten Stations were more than 2 above Pre-Industrial. Rome hasn’t yet shaken off its cold.

26_Table2

The second Table shows the Year to Date running average of daily Mean temperatures, with the stations ranged from warm to cool. Koltsovo has lost its top spot to Rio de Janeiro but there’s not much between them. Sydney and Wellington are also running neck and neck. These four stations are the only ones likely to change ranking positions over the next six months.

If you recall, my Pre-Industrial Baseline is 0.85 below the average of 10 years of Mean temperatures (calculated daily for each station). The “cf10yr” column saves you having to do the mental arithmetic. The “above P-I” figures are companions to the Global Warming narrative – “we must not go above two degrees C”. The “10yr” figures show how much warmer or cooler this meteorological year is than the average for 2008/9 to 2017/18. You would expect roughly half of the stations to be warmer than average. How much warmer (or cooler) may come as a surprise.

I have twinned my Ten Stations. The “warmest” northern hemisphere station is chummed with the “coolest” in the south…and so on. Over a rolling five-week cycle I will offer graphs for each set of twins, beginning with Koltsovo and Buenos Aires.

Here’s a suite of charts/graphs/histograms. See what you make of them.

Wks22to26KoltBA

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