given that the melting of the thing could cause ocean levels to rise by up to amost a meter (or even more if it has a cascading effect on other ice masses in the area) that is actually appropriately named.
If an iceberg is already floating in the ocean, then it has already displaced that ocean by an amount.
Just in exactly the same way an ice cube has already displaced surrounding water in a glass.
If or when the aforementioned iceberg melts, there will be no further raising of sea level - because the level was already displaced.
Same as with the ice cube in the glass of water.
Nothing to do with cLiMaTe ChAnGe.
[0] https://www.nature.com/articles/s43247-021-00242-3 - "High geothermal heat flow beneath Thwaites Glacier in West Antarctica inferred from aeromagnetic data" - 17-Aug-2021
You see that you have no more granularity? That you can't describe it as worse than a meter of sea level rise?