John Dee's Climate Normal

John Dee's Climate Normal

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John Dee's Climate Normal
John Dee's Climate Normal
A Century Of UK/NI Rainfall (part 4)

A Century Of UK/NI Rainfall (part 4)

A butcher's at drought and deluge over the last 100 years. Are things getting worse, and what does ‘worse’ even mean?

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John Dee
Aug 19, 2022
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John Dee's Climate Normal
John Dee's Climate Normal
A Century Of UK/NI Rainfall (part 4)
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In my previous post in this series I lamented lack of crayoning something as simple of mean daily rainfall owing to data quality issues. We noted that from February 2009 onward the crew at NOAA have erroneously coded the soil temperature at 100cm as minimum daily air temperature and PWS hydrometeor codes as millimetres of rainfall at a globally significant weather station (Armagh). I promised to go check the remaining long series stations in my sample and I did just that.

Rain Check

A quick reminder of the UK/NI stations in my long series sample:

A simple A-Z sort order on the rainfall field provided a list of dates of outliers to check at every station. These daily values (as pulled down from GHCNd via KNMI Climate Explorer) were compared to original station records using MIDAS data held in the CEDA Archive in combination with this fantabulous resource run by Met Éireann.

Looking Good

It’s another fine summer morning out there and I am pleased to report that all extreme outliers for daily…

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