A68a

A68a is a large iceberg that calved from the Larsen C Ice Shelf in Antarctica on July 12, 2017. It is one of the largest icebergs ever recorded, with an area of approximately 5,800 square kilometers (2,200 square miles) and a volume of around 1 trillion tons. The iceberg was named A68a after breaking off from the larger iceberg A68, which itself had calved from the Larsen C Ice Shelf in 2017.

The calving of A68a was a significant event in the context of climate change, as it represented a dramatic loss of ice from the Larsen C Ice Shelf. The Larsen C Ice Shelf has been experiencing rapid thinning and retreat in recent years, and the calving of A68a was seen as a further indication of the impacts of climate change on the Antarctic ice sheet.

A68a has since drifted northward, eventually reaching the Southern Atlantic Ocean. Its movement has been closely monitored by scientists, who have used satellite imagery and other remote sensing techniques to track its progress. The iceberg's size and movement have also raised concerns about its potential impacts on marine ecosystems and shipping routes in the region.

Despite its size, A68a is not expected to have a significant impact on global sea levels, as it is already floating in the ocean. However, its calving and subsequent drift highlight the importance of continued monitoring and research into the impacts of climate change on the Antarctic ice sheet and the global ocean.