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Nigel Marriott's Blog

An independent statistician using data to understand our world and to predict the future

You are here: Home / Archives for principal components analysis

UK Weather Trends #35 – Winter 2025

March 5, 2025 By Nigel

Winter 2025 in the UK was unremarkable.  Last year I explained I believe our winters are following a steady trend to warmer and wetter winters which began in the early 1980s.  The data for the winter just gone doesn’t my conclusions.

[Read more…] about UK Weather Trends #35 – Winter 2025

Filed Under: Weather Tagged With: multivariate data, Presenting data, principal components analysis, standardisation, trend analysis, Weather, weather trends, z-scores

UK Weather Trends #33 – Autumn 2024

December 4, 2024 By Nigel

The UK autumn in 2024 was essentially unremarkable and mostly consistent with the step change in autumnal climate seen 25 years ago.

[Read more…] about UK Weather Trends #33 – Autumn 2024

Filed Under: Weather Tagged With: multivariate data, Presenting data, principal components analysis, standardisation, trend analysis, Weather, weather trends, z-scores

UK Weather Trends #32 – Summer 2024

September 4, 2024 By Nigel

The 2024 meteorological summer in the UK was unremarkable on all weather variables.  In fact 2024 was so unremarkable that it is in fact the most “normal” summer of the last 114 years when I compare the data to the last 50 years which I regard as “living memory”.

[Read more…] about UK Weather Trends #32 – Summer 2024

Filed Under: Weather Tagged With: multivariate data, Presenting data, principal components analysis, standardisation, trend analysis, Weather, weather trends, z-scores

UK Weather Trends #31 – Spring 2024

June 4, 2024 By Nigel

Spring 2024 in the UK was the hottest on record.  In some ways this is surprising given it was also the 10th dullest and 6th wettest spring on record which is inconsistent with trends over last 25 years and with the typical correlations seen in spring.  With any other dataset, I would ask for a check on the temperature data to see if it is correct.

[Read more…] about UK Weather Trends #31 – Spring 2024

Filed Under: Weather Tagged With: multivariate data, Presenting data, principal components analysis, standardisation, trend analysis, Weather, weather trends, z-scores

UK Weather Trends #30 – Winter 2024

March 3, 2024 By Nigel

Winter 2024 in the UK was the 5th sunniest & 8th wettest on record.  A year ago I postulated UK winters were entering a new era of being warm, wet & sunny.  I am now certain this is the case and my favoured hypothesis is that our winters are following a steady trend which began in the early 1980s.

[Read more…] about UK Weather Trends #30 – Winter 2024

Filed Under: Weather Tagged With: multivariate data, Presenting data, principal components analysis, standardisation, trend analysis, Weather, weather trends, z-scores

UK Weather Trends #28 – Autumn 2023

December 4, 2023 By Nigel

The UK autumn in 2023 was the 6th warmest on record and consistent with the step change in autumnal climate seen 25 years ago.

[Read more…] about UK Weather Trends #28 – Autumn 2023

Filed Under: Archive Tagged With: multivariate data, Presenting data, principal components analysis, standardisation, trend analysis, Weather, weather trends, z-scores

UK Weather Trends #27 – Summer 2023

September 10, 2023 By Nigel

The hottest June on record resulted in the 8th warmest summer on record in the UK.  However, rain and sunshine levels were normal sowhen looking at the summer using principal components, the 2023 summer was above average but not outstanding.

[Read more…] about UK Weather Trends #27 – Summer 2023

Filed Under: Archive Tagged With: multivariate data, Presenting data, principal components analysis, standardisation, trend analysis, Weather, weather trends, z-scores

UK Weather Trends #26 – Spring 2023

June 6, 2023 By Nigel

Spring 2022 was warmer than usual and was mostly typical of the springs that we now get due to our changing climate.

[Read more…] about UK Weather Trends #26 – Spring 2023

Filed Under: Archive Tagged With: multivariate data, Presenting data, principal components analysis, standardisation, trend analysis, Weather, weather trends, z-scores

UK Weather Trends #25 – Winter 2023

March 2, 2023 By Nigel

Winter 2023 was the 10th sunniest on record but I doubt we may have noticed.  There are indications now that our winters are entering a new era of being warm, wet & sunny.

[Read more…] about UK Weather Trends #25 – Winter 2023

Filed Under: Archive Tagged With: multivariate data, Presenting data, principal components analysis, standardisation, trend analysis, Weather, weather trends, z-scores

UK Weather Trends #23 – Autumn 2022

December 4, 2022 By Nigel

The UK autumn in 2022 was the 3rd warmest on record and consistent with the step change in autumnal climate seen 25 years ago.

[Read more…] about UK Weather Trends #23 – Autumn 2022

Filed Under: Archive Tagged With: multivariate data, Presenting data, principal components analysis, standardisation, trend analysis, Weather, weather trends, z-scores

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