SpottedPineapple86 t1_ius1eay wrote
Reply to comment by _CMDR_ in TIL that one third of sea level rise is from thermal expansion (not melting ice) by on_surfaces
Ice melt is not really a contributor... the ice is already in the water.
Put an ice cube in a cup, then fill it up until the water is just about to spill over. Wait awhile, then observe that after the ice completely melts, the water still hasn't dripped over.
This is a concept known as "displacement"
whipfinish t1_ius7lp5 wrote
Most ice in question is not yet in the water.
SpottedPineapple86 t1_iusn918 wrote
The water will take the place of where that ice is.
whipfinish t1_iuswinr wrote
Antarctica is the highest continent on earth. Over half of that ice is more than 50 meters above current sea level, and it will be lifted even higher as the ice load is reduced during large-scale melting. The Greenland ice sheet creates almost no ice shelves and nearly all of its ice is over 50 meters above sea level.
The ice is not yet in the water.
beetrootdip t1_iutixh1 wrote
Yeah, but god will make it rain over Greenland and make the water stay in a 50 m tall shape.
And I really hope this was obvious - /s
_CMDR_ t1_iusaq0k wrote
Most of the ice that is melting is over land.
deck_hand t1_iusanne wrote
The person you replied to didn’t say sea ice melt. Land ice melting and then flowing into the sea is likely what was meant.
WispyCombover t1_iusrmhs wrote
Right, that covers the arctic. Now look at Greenland and Antartica.
SpottedPineapple86 t1_iutmz9y wrote
I think your physics book collected a lot of dust.
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