Interesting. That must be the same source of data that TropicalTidBits are using, IIRC that's the only other site to present a 168 MetO model output chart.
The Met Office global model doesn't go out to 168 and never has done.
https://www.metoffice.gov.uk/research/approach/modelling-systems/unified-model/weather-forecasting
The only thing that does is MOGREPS - I had an inkling that the 168 chart on TropicalTidBits was in fact the MOGREPS control run for 168, but of course that's never been proven.
Does the source of your data mention what that 168 data actually is? Whatever it is, tantalising though it is, it's not the global model.
I guess the key is finding out how many grid points it has, as per that MetO page:
Global model: 10 km (2560 x 1920 grid points)
MOGREPS-G: 20 km (1280 x 960 grid points)
Originally Posted by: Retron