Despite the last quarter year of rising altimetry outputs, not enough to
pull this curve-fit metric out of the depths of La nina.
Latest output 05 Aug 2023 data to 23.499067 (01 July 2023).
Effectively much the same 2100 projection as recent updates (more than 6
month lag behind Oct 2022 that ONI started going positive , ie from
minimum negative) .
Indicial curve fit still the best fit and the century projection curve
y = 2.538389 + 0.098236*x^1.410124

y is global SLR in Aviso terms and x is year minus 2000, 6dp figures
retained for anyone else wishing to repeat/confirm these results.
To 2100 processing all the data each time ,from 2003.0 to avoid
post-Pinatubo global geodata stabilisation ,754 datapoints, SLR of 67.48 cm

Recent history of these processed Aviso 10 day outputs , after a very
long run of -going values , the 24 Dec 2022 one, the first regular 10
day whole-earth-orbits scan cycle Aviso output, started going positive
but then continued negative

Latest data-point date, 2100 projected value
24 Dec 2022, 70.011cm
03 Jan 2023, 70.008
13 Jan 2023, 70.07
23 Jan 2023, 70.08
02 Feb 2023, 69.94 (- 0.14)
22 Feb 2023, 69.45 (-0.49)
03 Mar 2023, 69.33 (-0.12)
14 Mar 2023, 69.31 (-0.02)
24 Mar 2023, 69.17 (-0.14)
03 Apr 2023, 68.84cm (-0.33)
22 Apr 2023, 68.05 (-0.79)
02 May 2023, 67.82 (-0.23)
12 May 2023, 67.82 ( +/-0.0)
22 May 2023, 67.800 ( -0.02 cm)
01 June 2023, 67.729 (-0.07cm
01 July 2023 , 67.479 (- 0.25cm)

From that curve for the last year 2022.0 to 2023.0,
annual global SLR of
4.97 mm and locally for South Hampshire UK , sinking
from post-glacial isostatic rebound counter-balance by about 1.7mm/year,
(minus the 0.3mm/yr GIA included in the Aviso
reference figures) gives 6.37mm/year or 1/4 inch per year for the Solent
SLR, so
about half a millimetre a month local SLR. Earlier results on the URL
below. Being over-run by a very large increase in local UK mean sea
level of about 4cm in the last year. No academic reporting of that and
no reply from any of the UK and world experts on mean sea level and
explantion. I suspect with slowing of AMOC and Greenland meltwater, the
deep cold return path is not up to the job and water is building up in
the NE Atlantic. Last month it looked like this anomalous MSL had peaked
in June 2023 , but maybe just a hiatus and is rising again.
Analysing the red/blue difference of the Newlyn residuals over time
https://ntslf.org/storm-surges/latest-surge-forecast?port=Newlyn&chrt=3
they should track together.
Similar separatio for all other UK ports. This MSL anomaly is showing up
with similar values in two other independent monitoring procedures.

This global SLR curve fit using
ftp://ftp.aviso.altimetry.fr/pub/oceano/AVISO/indicators/msl/MSL_Serie_MERGED_Global_AVISO_GIA_Adjust_Filter2m.txt
data from
http://www.aviso.altimetry.fr/en/data/products/ocean-indicators-products/mean-sea-level/products-images.html

and off-line curve-fitter from
<statpages.info/nonlin.html>

--
Global sea level rise to 2100 from curve-fitted existing altimetry data
<http://diverse.4mg.com/slr.htm>