Record Pools Of Meltwater On George Vi Ice Shelf, Antarctica
"Even in frigid Antarctica, depressions in the surface of a glacier can fill with meltwater during the relative warmth of summer. The blue areas in the 2020 image represent the most widespread meltwater pooling — spanning some 90 miles (140 kilometers) — ever recorded on the George VI Ice Shelf. This massive slab of glacier ice protrudes from the western side of the Antarctic Peninsula and floats on the waters separating the peninsula from Alexander Island. Pools like these can destabilize ice shelves, but George VI is thought to be robust enough to withstand them."
yep....noticed that too.
Um, no I didn't notice that at all. One effort shows data from 2004, mainly due to 2004 being such a major year for the Muir Glacier. The rest are pretty recent. 20% are from 2020. 75% from the last 5 years.
Unless you meant that any remote sensing data is from the past, even if taken seconds ago.
Satellite data usually takes a little while to be made public due to processing requirements (e.g. ICESat-2 was launched in 2018, but some higher level products haven't been produced yet.) Then researchers need time to figure out what the data is actually showing.
Also, regarding the images being a few years old, that’s obviously for security reasons. Satellite images made available to the public are never current for obvious reasons.