Greenland's Ice Melt Lowers Local Sea Level While Global Oceans Rise

Global glacier melt is causing ocean levels to rise worldwide, with an average increase of 9 centimeters already recorded and projections of up to 1 meter by century's end, according to the IPCC. However, a team from Columbia University has discovered a paradoxical effect in Greenland: as its glaciers melt, the local sea level is actually falling, potentially by as much as 2.5 meters over the next 75 years. The reason, published in Nature Communications, is that the massive ice loss reduces the weight pressing down on the island, causing the land to rise and the relative sea level to drop. This counterintuitive phenomenon highlights the complex regional impacts of climate change.