STOP PRESS
The Aviso site has added another 6 weeks of Jason3 data, starkly upward,
reminiscent of what went on a year ago (a year ago plus 3 months delay
in data output to the public).
Enough to elevate the linear trend from 1.65mm/year to 2.41mm/year.
Unfortunately its a matter of revisiting at least 6 months of
datapoints, due to the way seasonality works forwards and backwards, at
the ends of these plots.
A job for tomorrow.