Season determination
Talking about the season determination, we need to clarify that we are talking about a correct visual representation of the season. For example, you shouldn't see red foliage in autumn if located in a tropical area.
Four Seasons takes into consideration various parameters:
Period
Emisphere
Temperature
Distance from the poles and average snow cover
Surrounding mean elevation
What you see is obviously a simplification and could not meet your expectations. In those cases, you can intervene with the manual season option.
To calculate the temperature, Four Seasons divides a surrounding territory of about 100 km radius in a grid, and then extract the mean elevation of these mesh points. After that, the sea level temperature is scaled down to this elevation. This should eliminate peaks values which would lead to weird results.
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