1-6 months, natural disasters or economic collapse
Uh, what?But it certainly will be more than an equal volume of ice that melts in an iceberg.
If it's an "equal volume", how could it contribute more? In fact, an equal volume of snow is nowhere near the same mass as an equal volume of ice due to density differences. Snow, even packed snow, has a ton of air in it.
I know we're getting into the weeds here, but this statement doesn't make sense.
It's largely irrelevant though. If the entirety of predicted glacial and polar cap melting (458.3 gigatonnes) would equate to a 1.27mm sea level rise, snow and ice packs will be minuscule by comparison.