Bering Sea Ice At Record Low
"Less ice formed in the Bering Sea during the winter of 2017-18 than in any winter since the start of written records in 1850. Normally, ice covers more than 193,000 square miles (500,000 square kilometers) of the sea in late April, roughly twice the size of Texas. The ice extent at that time in 2018 was only about 10 percent of normal. Changes in when and where the sea ice melts can affect phytoplankton blooms which, in turn, can affect the entire Bering ecosystem. Further, open water absorbs more of the Sun’s energy than ice, which contributes to the planet’s warming."
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.