Sunday 21 June 2020

Regional Temperature Variances




The above graph shows the 2020 monthly temperatures until June for three weather stations in Dublin. Phoenix Park has been consistently at least one degree higher than Dublin Airport, only 9km away :




The three weather stations are located like this, with Phoenix Park in the middle of the other two. Casement Aerodrome is about 8km from Phoenix Park.




The mean (average) temperatures for these three stations shows exactly what one would expect, very similar temperatures :







So this begs the question, why have the temperatures diverged so much in recent times ? I cannot speculate as to the reasons for this but surely this is worth investigating by the climate scientists here. The old manual Phoenix Park weather station was replaced in 2003 so we would expect current readings to be very accurate.

It is the higher Phoenix Park temperature readings that are used in climate charts like the one below to show that the average temperatures in Ireland have increased by nearly one degree.



However, when one compares recent Dublin Airport temperatures with the long term average temperatures, there is no observable warming :



And likewise with Casement Aerodrome, you can see a little bit more warming, then a little bit more cooling and so on, but overall, much the same as the mean :




Phoenix Park shows a somewhat different story, with an overall warming trend :



It appears that something is not quite right here. Which weather station in Dublin is the most reliable ? More research is surely needed.

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