Yeah, I've read about Ice Age, too.
I was unable to find any historical reference for this. Would you please post here a link?
Anyway. I was inclined to find historical evidence for harsh winter.
In 1 century AD Ovidius, while in exile, wrote that Danube and sea has frozen due to harsh winter. But that is up there, 455 km to the North.
Later in 400 AD it is said that in Constantinople there was huge ice in the streets in spring because sea ice started to melt and move.
Constantinople is our area of interest.
Please notice time difference. Such harsh winter is really THE REAREST occasion. While in game I have every winter harsha winter in Turkey. Like in Scythia. This is nonsense.
And please note that Scythia is actually warm, too. It is our modern Krasnoidarskiy krai. It is like +2 Celcius in winter there. Snow is rare.
So, to sum up. Here is what S.Kuznets (Ukranian state inspector for Black Sea nature preservation) has to say about weather in his article:
"So, over the past 2,000 years, more than 20 “strong” winters have been recorded in the Black Sea region. The time interval between them is on average 75 years (in most cases from 60 to 90 years)."
Please note he writes about Crimea (in game Bosphorus) region. Which is, again 455 km to the north from Turkey (Bythinia et Pontus).