I submit that the polling sample is too small and it is polling the wrong items to be any use at all in determining sea level of the time.
Submit all you want but you certainly haven’t demonstrated anything of the sort. The fact that the high-resolution satellite measurements were able to show the same thing as the tide gauges had been showing for years is proof that the technique is valid.
Can we afford to assume anything at all more accurate then the foot the measure was taken with?
Actually the measurements were taken in inches in those countries using Imperial measurement systems at the time, but as the Central Limit Theorem proves, if you average enough measurements you increase the accuracy of the average. 20 years of averaging four-times-per-day measurements is enough to increase the accuracy of the average by 170 times compared to the accuracy of the individual measurements. If the original measurements were in inches then the impact that fact has on a 20 year average is less than ± 0.15 mm — small enough that it is of no consequence as a source of error.
This is why I’ve been saying all along that it is completely irrelevant. There are much bigger errors to worry about (e.g. ± 0.09 mm
per year for the GIA vs ± 0.15 mm over
20 years).
I guess that would depend on what you want the data to say…
What
everyone wants the data to say is what really happened.
The raw measurements are publicly available. (For example, you can download
the hourly data for Newlyn from 1915-2007 if you like. Or, indeed,
any other station that takes your fancy. Information about the station is recorded there — for example, Newlyn was a “Cary Porter float gauge operated by Ordernance Survey” from 1915-1983, then a DATARING system with full tide pressure point and Munro float gauge backup from 1983, and finally with a mid-tide pressure point from 1996 onwards.)
Church used processed monthly data from the
Permanent Service for Mean Sea Level, from which you can also download montly average data. So if you want to compare the monthly average data with the hourly data to make sure no errors slipped in, you can.
Then you can use that monthly data to reconstruct global mean sea level, using your own techniques for station selection, data QA, and global sea level reconstruction. Just like Church did. Just like many other researchers have.
And you can compare your results to theirs, and publish a paper on your results in a scientific journal.
If Church (and the others) made a fundamental error then
anybody can do the above work and
prove that they were wrong.
Nobody has.
Not even those scientists funded by the most profitable company in the world who is otherwise quite happy to fund PR firms to promote the message that AGW is a scam. Not by doing
science, like the above, but by misrepresenting what the science actually says.
Just like those exact same PR firms used to do about cigarette smoke for the tobacco industry.
Where’s your “skepticism”?
It means they should not be using the compromised data at all.
But I bet they used it anyway…would I be correct in collecting on that bet?
What a foolish bet! I even
told you how to obtain the exact list of stations they actually used and yet you were
still willing to make a bet that you should have known you couldn’t possibly win!
Furthermore, that record would have failed the QA checks outlined in
Church et al 2004, which were the same QA checks Church used in his later publications, as he clearly stated.
Finally, the reconstruction
starts in 1870, but that record only exists from 1840-1842. Why on earth would you want to make a bet like that?
You have a bunch of calculations that have failed to take into account tectonic movement.
Again claiming things directly refuted by the links I already gave you.
And even worse, they cannot account for such since they have no readings on it from the time period.
And yet the paper clearly describes how they did.
Oops, indeed. Perhaps becoming informed
is worth the effort after all?
Tide data is useless without knowing the exact time and the exact location.
Which is why both are recorded.
And its relationship to sea level itself may not be at all what we all expect.
There is substantial evidence that it is.
Apologies.
I could not come up with a more accurate word.
That’s not what
I would classify as an apology.
You are clearly accusing Church and other scientists of fraud yet it is obvious you have absolutely no idea what work they have done, how they have done it, or even basic mathematical laws like the Central Limit Theorem or low-pass filtering.
They are using measurements of one thing and claiming they are measures of something else.
That’s like saying that contents of a CD are not “music” because each individual sample is simply a measure of air pressure at an instant in time.
They are using data of questionable accuracy (and unknown error) without any explanation at all.
Well, there is no explanation at all if you refuse to
read the explanation they gave, I suppose. Refusing to read what they wrote and then complaining that they didn’t explain it to you is disingenuous, don’t you think?