Rapidly Melting Antarctic Ice Sheets To Cause Irreversible Damage
A new study has found that the Antarctic ice sheet is melting at a greater pace than expected, raising concerns about future sea level rise. Rising temperatures are causing warm water to gush through thick glaciers and ice sheets, which could lead to a tipping point. A tipping point is when a small sequence of events leads to an extreme change in an existing system, causing irreversible damage. British Antarctic Survey scientists found warm ocean water seeping beneath the grounding line, causing more melting than is visible on the surface. It doesn't specify when the tipping point might occur but suggests significant sea level rise, posing a future threat to coastal cities. "Our projections of sea level rise might be significant underestimates… with every small increase in ocean temperature, with every small increase in climate change, we get closer to these tipping points," explained Alex Bradley, an ice dynamic researcher at BAS. The Antarctic ice sheet currently sheds around 150 billion metric tons of ice every year and holds enough water to push the global sea level by 190ft.