Hi
I’ve emailed this issue to @MartinDix, but I thought I’d post it here as well in case it’s relevant to others.
In my setup of the Last Glacial Maximum (LGM) climate with ACCESS-ESM (present in /home/561/hs2549/access-esm1.5/lgm), I’ve made several changes to the boundary conditions — including GHGs, orbital parameters, ice sheets, topography, and a global salinity increase of 1 PSU from the PI value. These were all implemented around year 11 in the attached time series plot; Orange is LGM, blue is PI.
However, the issue is that I’m seeing a rapid decrease in globally averaged salinity during the run. I am plotting the SALT_GLOBAL_AVE from the ocean-scalar-1monthly-ym_*.nc files.
Could you please let me know how the global salinity budget is calculated in the model?
I’ve also attached sea surface salinity plots, which show an increase in the north — mainly due to topography changes — and some decreases in other regions. However, since total salinity should be conserved, I’m concerned something may be off. I’ve checked that there is no external freshwater input added in the setup.
for reporting, not for the issue per se!)