Originally published on
by at Arctic News
The image shows that there is a lot of open water between the coast of Alaska and the sea ice. To determine where there is open water and where the sea ice starts can be hard; the sea ice is often covered by clouds; furthermore, even when there are no clouds, the question remains what is to be regarded as sea ice.
According to many, a Blue Ocean Event starts once Arctic sea ice extent falls below 1 million km².
The roughly-sketched outline drawn over the NASA map below indicates that there may only have been some 991 thousand km² of concentrated sea ice left on September 6, 2022 (inset shows NSIDC sea ice concentration for the day).
In conclusion, depending on what is counted as sea ice, we could already be experiencing a Blue Ocean Event right now. A Blue Ocean Event implies the crossing of a huge tipping point that looks set to cause further tipping points to be crossed, as discussed at the Blue Ocean Event page.
The situation is dire and the right thing to do is to help avoid or delay the worst from happening, through comprehensive and effective action as described in the Climate Plan.
• NASA Worldview
• Latent Heat
• Blue Ocean Event
• Climate Plan