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The Greenland ice cap is losing an average of 30m tonnes of ice an hour due to the climate crisis.

The Greenland ice cap is losing an average of 30m tonnes of ice an hour
due to the climate crisis, a study has revealed, which is 20% more than was
previously thought. Some scientists are concerned that this additional
source of freshwater pouring into the north Atlantic might mean a collapse
of the ocean currents called the Atlantic meridional overturning
circulation (Amoc) is closer to being triggered, with severe consequences
for humanity. Major ice loss from Greenland as a result of global heating
has been recorded for decades. The techniques employed to date, such as
measuring the height of the ice sheet or its weight via gravity data, are
good at determining the losses that end up in the ocean and drive up sea
level. However, they cannot account for the retreat of glaciers that
already lie mostly below sea level in the narrow fjords around the island.
In the study, satellite photos were analysed by scientists to determine the
end position of Greenland’s many glaciers every month from 1985 to 2022.
This showed large and widespread shortening and in total amounted to a
trillion tonnes of lost ice.

 Guardian 17th Jan 2024

https://www.theguardian.com/environment/2024/jan/17/greenland-losing-30m-tonnes-of-ice-an-hour-study-reveals

January 21, 2024 - Posted by Christina Macpherson | ARCTIC, climate change