1) Atmospheric oxygen cycles on a seasonal basis, as does carbon dioxide.
2) Photosynthesis is likely contributing to these cycles, but the dominant spatial regions are unknown and the contribution of marine plankton has been assumed to be small.
3) Since the cyclic rate of change of carbon dioxide is very highly correlated with that of sea ice, I predict the cyclic rate of change of oxygen will also be, at least at high latitudes.
4) I test and confirm the prediction that seasonal sea ice and oxygen rates are highly coherent at high latitudes, with peak oxygen emission near peak rates of sea ice loss.
5) Determining causality requires far more observations and experimentation.
6) These results provide further evidence that polar phenomena have been neglected in studies of the oxygen and carbon cycles, and are consistent with a proposed major role of high latitudes in carbon dioxide cycles.