- #36
jim hardy
Science Advisor
Gold Member
Dearly Missed
- 9,832
- 4,895
Before i panicked i'd have to go back and check all the 20th century data to see whether it is based on the 1929 or the 1988 sea level datum and if it's all been adjusted to the latter or did the computer plots just smooth out the step change.
https://www.ngs.noaa.gov/datums/vertical/national-geodetic-vertical-datum-1929.shtmlhttps://www.ngs.noaa.gov/datums/vertical/north-american-vertical-datum-1988.shtml
I started that exercise once but gave up when i read that around the US gulf coast much of apparent water level rise is due instead to land sinking.
I decided geophysics is not my area of expertise
so now i just dismiss anything related to climate that i sense is trying to arouse my emotions. old jm
https://www.ngs.noaa.gov/datums/vertical/national-geodetic-vertical-datum-1929.shtmlhttps://www.ngs.noaa.gov/datums/vertical/north-american-vertical-datum-1988.shtml
I started that exercise once but gave up when i read that around the US gulf coast much of apparent water level rise is due instead to land sinking.
I decided geophysics is not my area of expertise
so now i just dismiss anything related to climate that i sense is trying to arouse my emotions. old jm