A gigantic cavity — two-thirds the area of Manhattan and almost 1,000 feet (300 meters) tall — growing at the bottom of Thwaites Glacier in West Antarctica is one of several disturbing discoveries reported in a new NASA-led study of the disintegrating glacier. The findings highlight the need for detailed observations of Antarctic glaciers' undersides in calculating how fast global sea levels will rise in response to climate change.
Researchers expected to find some gaps between ice and bedrock at Thwaites' bottom where ocean water could flow in and melt the glacier from below. The size and explosive growth rate of the newfound hole, however, surprised them. It's big enough to have contained 14 billion tons of ice, and most of that ice melted over the last three years.
https://www.nasa.gov/feature/jpl/huge-cavity-in-antarctic-glacier-signals-rapid-decay
(Score: 0) by Anonymous Coward on Saturday February 02 2019, @12:12AM (2 children)
The only place 0.41 is found is near the top in the table "Table 1. Sea level equivalent (SLE) from various land ice sources. From IPCC AR5 (Vaughan et al, 2013)." which looks like .41m of sea level rise from glaciers and ice caps but not any ice sheets.
At the bottom you'll find their math for estimating the sea level rise.
I have no idea how you decided the 0.41 was m/km^3. If 361.8 Gt = 1mm then 14 gt is .038 mm rise
(Score: 0) by Anonymous Coward on Saturday February 02 2019, @08:42PM (1 child)
Here it defines sea level equivalent
Here is the header of the column in the table (appears to use units of meters):
(Score: 0) by Anonymous Coward on Sunday February 03 2019, @05:51PM
Yes but that is full meltimg of all the ice specified on the left. Not meters per volume, meters per geologic features.