"There’s a new study out that uses previously overlooked or obscure sea-level records to extend the UK sea-level record back to 1832.
... The study is called “Changes in mean sea level around Great Britain over the past 200 years“.
... it is well-established that there are long-term cycles in the tides with periods of up to 50 years.
... it’s clear that there was a rapid acceleration in about 1890.
... But that 1890s acceleration only lasted a couple of decades.
After that, the rise was approximately linear until 1950.
Then there was a slight deceleration until about 1980, and a slight acceleration since then.
The problem is that the alarmists will look at the record, cut it off so it begins in 1950, and then loudly proclaim that the UK record shows a dangerous acceleration of 0.045 mm/year per year.
Which is mathematically 100% true -- in the larger world it is 100% false
At the the current rate of UK sea level rise, the total rise by 2100 will be 160 mm (6.3 inches). But with the false “sea level acceleration” added in, the rise would be more than twice that, 340 mm (13.4 inches).
... no sign of any claimed long-term acceleration.
... Depending on the period that you choose, you can say that there is positive acceleration, negative acceleration (deceleration), or no acceleration in the historical UK sea level record.
… the endless claims of long-term acceleration in the rate of sea-level rise are absolutely not visible in the UK historical record."
