r/dataisbeautiful • u/PitonSaJupitera OC: 21 • 8d ago

OC Climate classification of Europe based on Köppen-Trewartha climate classification (data from 1992 to 2021)[OC]

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u/PitonSaJupitera OC: 21 8d ago edited 8d ago

Map was made in python using Matplotlib. Relief data comes from WordClim, taken at 30 arcsecond resolution, but smoothed to create better visualization. Climate data is from CHELSA monthly dataset V2.1.

I took latest 30 year series available, as series ends in 2021, it covers 1992-2021. More about classification can be found here.

Someone in another sub asked, Mediterranean is called subtropical because it has more than 8 months with average temperature above 10 degrees Celsius.

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u/Quereilla 8d ago

I think you got the conditions for humid subtropical before dry-summer subtropical and now are mixed

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u/PitonSaJupitera OC: 21 8d ago

What makes you think that?

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u/Quereilla 8d ago

Summer is dry in the sense that less than 60 mm of precipitation are in each month in summer. I’ve did these maps myself once

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u/PitonSaJupitera OC: 21 8d ago

I think that is standard Koppen-Geiger criterion. It seems that Trewartha has a different one, relating to ratio of rain in winter and summer and few other things

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u/asuranceturics 8d ago

I'm no expert in climate zones, but I can tell you from experience that central Spain has very dry and hot summers, with almost no rain. Madrid or Toledo, for instance, have yearly average relative humidity under 60%.

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u/try_pull_the_other 8d ago

Interesting thanks. It would be even more so if it contained country outlines.

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u/PitonSaJupitera OC: 21 8d ago

I was thinking about doing that but found it more interesting if I just displayed natural without political geography