Peter Lang
I will be circumspect here as I don’t want to trigger moderation with too many links
If you go to my article here
http://judithcurry.com/2011/07/12/historic-variations-in-sea-levels-part-1-from-the-holocene-to-romans/
You will see in the 4th paragraph I mention it is ‘part of a ‘longer “document’ If you click on ‘document’ and scroll to the bottom of the extended version you will come to this reference and graphic
—— ——-
“A further study uses the same information and is headed; “Reconstructing sea level from paleo and projected temperatures 200 to 2100 AD”
This rather apocalyptic version-as do the other variations- starts towards the end of our studied period, but the margins of error show the high levels in earlier Roman times, then a dip, then a rise to the MWP peak, a decline, then a rise in modern times to below that of Roman and MWP before a dramatic projected increase closely linked to the future
temperature increase expected by some researchers.
http://www.glaciology.net/Home/PDFs/Announcements/gslprojection
——- ——-
It appears that sea level oscillates some 20/40cm around a mean average.
As regards glacier movements you will see my graphic here
It shows glacier advances and retreats over the last 3000 years from observational evidence compiled by such as Ladurie.
Clearly there has been major advances and retreats, which in theory should correspond roughly with sea level changes. (I haven’t done the full research on Parts 2 and 3 of ‘Historic variations in sea levels’ yet, so this assumption might be incorrect)
During Roman times it is said that many of the high level Alpine glaciers disappeared. At this point dear old Max would chime in with accounts of how high level silver mines near his home in Switzerland are still buried under ice.
As I say, there are enormous complications by trying to look so far back in time as the paper you referenced and trying to attribute global changes is further complicated by land changes as it sinks or rises.
So, I don’t believe this constancy of sea levels until the last 150 years. Neither observational evidence nor borehole data supports this. There appears to have been high water stands around the 5th Century, around the 12th and 16th Century and in between the levels have been altering substantially.
The LIA was supposed to have been the coldest part of the Holocene for 8000 years or so and would have deposited vast amounts of snow and ice which has been melting for some 300 years.
I have never seen estimates as to how much water was locked up during this period but if it was unprecedented in thousands of years there is theoretically a lot of melt to come which could cause sea levels to rise above the MWP levels
Water drawn from aquifers is another wild card
tonyb