Guest essay by Albert Parker
Just in case somebody could be interested in understanding if the climate scientists are telling us the truth about sea level acceleleration, there is still the opportunity to verify by using the tide gauge data in the PSMSL data base.
The tide gauges measure the relative sea level in many locations worldwide, mostly in northern Europe and North America, in the best cases since the mid-late 1800s, and are therefore the best source of information to understand what is going on…
The PSMSL data base include the time series of the monthly average mean sea levels recorded by every tide gauge…
· Use as start year 1900 and end year 1975 and then zoom and window over one selected area, for example Europe (but the United States and Canada or Australia and New Zealand work fine as well …)
· These were the relative sea level rates of rises about Europe in 1975 – this is a print screen of today 17 March 2016
· The above relative rates of rise are obtained by linearly fitting all the monthly average mean sea level data 1900 to 1975. The relative rate of rise is the slope of the fitting line.
· Now, let see what happened during the last 40 years …. Just move the end year to 2014 …
· These are the relative sea level rates of rises about Europe in 2014 – this is a print screen in March 2016
· The above relative rates of rise are obtained by linearly fitting all the monthly average mean sea level data 1900 to 2014.
· Surprise, surprise, no major changes …..
· Do you spot any significant change?
· Those that are claiming the sea levels are rising sharply than ever before at an accelerating rate are simply not telling the truth.
· This may realize (for now) downloading and analyzing the PSMSL data, or even analyzing the data online.
· In a few years’ time, also this data base will be corrupted and the truly measured data will be replaced by computations or reconstructions.
· Below same results for the US and Canada, plus Australia and New Zealand … just in case …