Once upon a time, William Herrin <bill@herrin.us> said:
On Thu, Jul 26, 2018 at 12:58 PM, Jason Kuehl <jason.w.kuehl@gmail.com> wrote:
"The first graph tracks the change in sea level since 1993 as observed by satellites."
I *really* want to understand the technology that lets a satellite hundreds of miles in the sky detect a 3mm change in average global sea level between the start and end of the year with an error bar that grows to only 4mm over a quarter of a century.
Well, you must not *really* want to understand, since there's a "Learn more" link to follow on the above page that (after a couple more clicks) would lead you to this page that has some explanation: https://www.aviso.altimetry.fr/en/techniques/altimetry.html -- Chris Adams <cma@cmadams.net>