[cogitator]

The new site for the old sample, which still may be comparing apples to oranges. Excuse my ignorance, but are gas concentrations uniform around the globe at all times? Also, the main point I was trying to make is that there are no new ice samples, because it’s melting, right?

Gas concentrations are fairly uniform around the globe. CO2 varies seasonally, but the bubble samples don't have that level of resolution.

There are still places where ice is accumulating, such as the center of Greenland. The ice edges on Greenland are retreating (it appears).