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2023 - Accelerating melt of ice sheets now unmistakable.

Greenland Ice Sheet

Warmer air is melting the top of the Greenland Ice Sheet

If you could shape an ice cube out of all the ice losses from Greenland and Antarctica over the past three decades, it would stand 20km high.

An international group of scientists who work with satellite data say the acceleration in the melting of Earth's ice sheets is now unmistakable.

They calculate the planet's frozen poles lost 7,560 billion tonnes in mass between 1992 and 2022.

Seven of the worst melting years have occurred in the past decade.

Mass loss from Greenland and Antarctica is now responsible for a quarter of all sea-level rise.

This contribution is five times what it was 30 years ago.

The latest assessment comes from the Ice Sheet Mass Balance Intercomparison Exercise, or Imbie.

South Georgia prepares to cull its invasive reindeer and rats.

South Georgia prepares to cull its invasive reindeer

A reindeer greets three penguins on a South Georgia beach
 
Reindeer have caused great damage to the fragile South Georgian eco-system, trampling native plants and 

destroying birds' nests and penguin habitats.

 

 

The world's mostly southerly herd of reindeer is to be culled to try to save the environment of the island of South Georgia.

The 3,000 reindeer are trampling native plants, causing erosion and endangering king penguins and other local birds by destroying their nests and habitat.

A team of Sami herdsmen from Norway have arrived and are preparing to round up and kill the reindeer.

The operation is expected to take two southern hemisphere summers.

The reindeer is more commonly seen in the Arctic, but Norwegians in need of fresh meat while on whaling missions in Antarctica brought a small herd of 10 reindeer to South Georgia in 1911.

And it is Norwegians who have been tasked with getting rid of the invasive species. The Sami people live with reindeer and their expertise is being drawn on in the cull.

Reidar Andersen, director of the Norwegian Nature Inspectorate which oversees the team, told the Reuters news agency: "The reindeer have become very destructive."

West Antarctic Ice Sheet warming - Antarctica

West Antarctic Ice Sheet warming twice earlier estimate

 

Byrd station data

 

The data from Byrd Station shows rapid warming on the west Antarctic ice sheet.

A new analysis of temperature records indicates that the