
Astrophysicist Neil DeGrasse Tyson, earlier this March posted a picture of a U.S. map that shows Florida and America's East and Gulf Coasts underwater on X, formerly known as Twitter.
The post was captioned, "In Florida, at 345 feet, Britton Hill is the highest elevation — the lowest highest elevation in the United States. This makes Florida supremely susceptible to sea-level rise during Climate Change. An objective truth even if you don’t believe in Climate Change. Just Sayin'."
The map is from National Geographic's September 2013 issue, which depicted whatthe map of different continents would look like if the sea level rose by 216 feet once all of the world's ice melted.
Though scientists believe that this scenario is not imminent and it would take over 5000 years for it to become real. However, a faction believes that if we continue emitting greenhouse gases and increasing our carbon footprints it will become Earth's reality far sooner.
Florida is not the only area witnessing the affected, but parts of South America would drown in the sea, and Denmark and the Netherlands would be a small set of islands.
David Thornalley, a professor of ocean and climate science at University College London, stated that while this scenario is quite extraordinary, it is possible.
"In the long term, even under more moderate emission scenarios, sea level rise after a few hundred years is expected to be in excess of 10 meters [33 feet]. So the picture Neil shows is not that far-fetched, it is simply that this scale of sea-level rise will take centuries to millennia to occur, assuming we don't lower GHG levels," he said.
According to the Intergovernmental Panel on Climate Change (IPCC), by 2100 the sea level will rise a few centimeters but the possibility of it rising 2 meters is still there.
Projections by the National Oceanic and Atmospheric Administration say that even a 3-foot rise in sea level will inundate Florida's coastline and New Orleans would drownin the sea.
Different ice sheets have differing levels of vulnerability to melting. The Antarctic ice sheet has the potential to raise sea levels by more than 190 feet and is vulnerable to runaway processes that can result in rapid collapse of the ice sheet over centuries, causing a sea-level rise of several meters. Similarly, Greenland's ice sheet could melt and raise sea levels by up to 23 feet.