Nasa records a 200mm (8inch) rise in sea-level since the mid-19th century:
This is a very significant change, easily verified, but not enough to swamp a lighthouse on the beach.
Luckily, old data is still hanging around to be found to bring the fraud of the climate science modern climate science community into high relief...even if folks like you are going to deny the reality.... This is the sea level increase between 1880 and 1980 shown by NASA. The graph shows an increase of just over 3 inches of sea level increase between 1880 and 1980....
NOTE the sharp decrease in the rate of increase after 1950.
You can't really scare people with a 3 inch sea level increase over a 100 year period so the frauds in climate science increased the figure to 6 inches per century with nothing more than adjustments....
NOTE the completely FAKE acceleration after 1950.
Here is an overlay of the two graphs on the same time scale. One is scientific in nature...showing actual observed sea level increases...the other is a piece of alarmist propaganda that has nothing whatsoever to do with science and everything to do with supporting a fraudulent narrative.
Then in 2004, the University of Colorado showed 2.8 mm per year rate of sea level increase.
2.8 mm per year? Not very scary...even to alarmists so again, the data is heavily massaged using inappropriate, and completely fraudulent methods to achieve a 3.3mm per year rate of increase. A global isostatic adjustment was applied which is blatantly fraudulent in the context of sea level increase. Such adjustments are correct in the context of calculating ocean depth as the sea floor sinks and have absolutely no relationship to measuring sea level by satellites. Here is what the adjustments look like...
Here is an overlay of the two graphs at the same time scale.
So some numbers got a massage and a picture was painted to give the appearance of imminent disaster. Shit happens...right? But when the "spokes agency" for modern climate science repeats the fraud as truth....we have real evidence of deliberate data corruption with the intent to deceive regarding climate change. In 1990 the IPCC said:
Then in 2013 using blatantly massaged data and obviously fraudulent graphs, the IPCC said exactly the opposite of what they said in 1990.
And just for fun...take a look at the very early tide information...what sort of new information do you think would require changing tide data from 60, 70, 80, and even 100 years ago?
The fact is that the sea level claims are fraudulent...and anyone who believes them has either been fooled, or is being nothing more than one of the legion of useful idiots.