World climate classification map [credit: Beck, H.E., Zimmermann, N. E., McVicar, T. R., Vergopolan, N., Berg, A., & Wood, E. F. @ Wikipedia]
The Homeric seems to have started about 2400 years before the Spörer (or Maunder?) Minimum, which may be its more recent equivalent. Researchers have found evidence of a ‘2400-year cycle in atmospheric radiocarbon concentration’ – for example, see here.
Much of the article below appears to have come from Wikipedia, but there it also says:
“Variations in the solar output have effects on climate, less through the usually quite small effects on insolation and more through the relatively large changes of UV radiation and potentially also indirectly through modulation of cosmic ray radiation. The 11-year solar cycle measurably alters the behaviour of weather and atmosphere, but decadal and centennial climate cycles are also attributed to solar variation.”
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The Homeric Minimum is a grand solar minimum that took place between 2,800 and 2,550 years before present, says the Grand Solar Minimum website.
It appears to coincide with, and have been the cause of, a phase of climate change at that time, which involved a wetter western and drier eastern Europe.
This had far-reaching effects on human civilization, some of which may be recorded in Greek mythology and the Old Testament.
The Homeric Minimum is a persistent and deep solar minimum that took place between 2,800 and 2,550 years before present, starting around 830 BC and resembling the Spörer Minimum.
This minimum is sometimes considered to be part of a longer “Hallstattzeit” solar minimum between 705–200 BC, that also includes a second minimum between 460 and 260 BC. The Homeric Minimum however also coincided with a geomagnetic excursion named “Etrussia-Sterno”, which may have altered the climate response to the Homeric Minimum.
The Homeric Minimum has been linked with a phase of climate change, during which the Western United States, Europe and the North Atlantic became colder and wetter although the eastern parts of Europe appear to have become drier. This climate oscillation has been called the “Homeric Climate Oscillation”.
Human cultures at that time underwent changes, which also coincide with the transition from the Bronze Age to the Iron Age. The climate fallout of this prolonged solar minimum may have had substantial impact on human societies at that time.
A variety of phenomena have been linked to the Homeric Minimum:
Continued here.
via Tallbloke’s Talkshop
July 24, 2020 at 03:33AM
Iowa Climate Science Education 
Reblogged this on uwerolandgross.
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