Climate change: 'Ice bumps' reveal history of Antarctic melting - BBC News

Satellites reveal a 50-year record of climate change by tracing the lumpiness in ice surfaces.

2 days agoShareclose panelShare pageCopy linkAbout sharingRelated TopicsClimateImage source, NASA/USGS/SPLImage caption, America's Landsat spacecraft have been looking down on Antarctica since 1973By Jonathan AmosScience correspondent@BBCAmosScientists say they now have a better idea of exactly where and when the margin of Antarctica started melting.

They've traced the changing shapes of bumps on the ice surface that mark locations where glaciers are anchored in place.

Half a century ago, few of these frozen moorings, or "pinning points", showed much change.

Since 2000, however, more than a third have reduced in size, emphasising the acceleration in melting.

The research is published in the journal Nature and underscores once again the increasing contribution that ice losses from the continent will make to future sea-level rise around the globe.

https://www.bbc.co.uk/news/science-environment-68406880

---