Flooding most extreme in more than 600 years
After quantifying the magnitude and frequency of extreme floods in the UK, scientists found that flooding has been the most extreme in more than 600 years.
Flooding in northwest England was reconstructed from the coarse grained units preserved in lake sediments at Bassenthwaite Lake. The record includes the floods of December 2015 (Storm Desmond) and November 2009.
The UK scientists found five flood rich periods (CE 1460-1500, 1580-1680, 1780-1820, 1850-1925, 1970-present) and then (of course) found a way to tie the floods to global warming.
However, reader J. H. Walker comes to a different conclusion.
First, Walker quotes the study: “The sediment palaeoflood series reveals five flood rich periods (CE 1460-1500, 1580-1680, 1780-1820, 1850-1925, 1970-present).”
Then he ties those numbers to the sunspot cycle:
CE 1460 – 1500 – Sporer Minimum
1580 -1680 – end Sporer and Maunder minimum,
1780 -1820 – Dalton ,
1850 -1925 – Glessberg,
1970 – present SC20 and SC24-SC25
Why the interest? “Because rain matters before snow. These weather events are in fact driven by Meridional Jet Stream coupled with the Polar front which is parked over most of the High land of The UK in a North Westerly direction, due to a blocking high over Western Europe.
“Although this is Western Europe it equally applies to the North Western Coast of Canada and Alaska with their South Westerly prevailing winds.”
Thanks to J.H. Walker for this link, and the insight