3 New Studies Confirm Sea Levels Were 5 to 9 Meters Higher 7,000-5,000 Years Ago Than Today
Modern relative sea levels are near the lowest in the last 7,000 years.
Two studies, independently published, identified Mid-Holocene sea levels in northern Norway (north of the Arctic Circle) as being 7 to 9 meters higher than today before declining to the present (Balascio et al., 2024, Nielsen et al., 2024). [emphasis, links added]
This region of the Arctic was warm enough to support human settlements and boat harbors during the Medieval Warm Period.
As the climate deteriorated into the Little Ice Age cooling centuries after the Medieval warmth, the accompanying sea level fall led to abandoned residences, ships, and harbors.
The seas had become too shallow to sail in.
It is sometimes assumed that these much higher Holocene relative sea levels are merely a function of tectonics or post-glacial uplift.
But sea levels in the tropics (for example the Malaysia-Thailand region) unaffected by ice-loading vertical land motions were also anywhere from 2 to 5 meters higher than today during this Mid-Holocene period before declining to present levels (Punwong et al., 2024).
“The Malay-Thai Peninsula is tectonically stable and remote from isostatic ice-loading effects.”
The recent sea level rise in recent centuries is thus well within the range of natural sea level variations.
Interesting photo of Plymouth Rock. Went there in 2005- my photo was only of the rock and not the surrounds. Cannot recall the water at all.
From https://www.tripsavvy.com/visit-the-plymouth-rock-1599133
you can see the same photo but without the water. Like this I must have been there when the tide was out.
Over the last few years, I have never met or talked to a climate zealot that could produce evidence by way of source data, that showed an increase in the rate of sea level rise, post the last ice age.
There are plenty of theories (opinions), narratives (opinions), and any number of (paid) researchers spreading false ideas, but no evidence. Many of them know there is no change right now, but they have been told on “good authority” that it might be true one day, so they should fake it until it happens. Of course the “good authority” has a financial vested interest.
The raw source tide gauge data (before modelling is applied) shows what it always showed, no change.
Greta, James Shaw, et all, are just people who want it to be true, because that is how they earn their money. Cynics like Al Gore, know it is not true, but promulgate the lies anyway, because this is how he earns his money.
Sea levels are really bad indicators of climate change other than drastic ones that occur during deep glacial periods eg 20,000 years ago, when the levels dropped by about 100m. After the Younger Dryas re advance at about 11,000 years ago, conditions warmed to about 8000 years ago ( the Holocene Altithermal) and cooling has recommenced ever since. Overall, however, we are in a warm period of the last two Million years which is essentially dominated by the Pleistocene glacial periods with brief warm periods popping up on regular, but short intervals. This is not a bad summary of the situation https://en.wikipedia.org/wiki/Quaternary_glaciation They even got this right….. “CO2 levels also play an important role in the transitions between interglacials and glacials. High CO2 contents correspond to warm interglacial periods, and low CO2 to glacial periods. However, studies indicate that CO 2 may not be the primary cause of the interglacial-glacial transitions, but instead acts as a feedback.[16] The explanation for this observed CO 2 variation “remains a difficult attribution problem”.[16]