What does "OAE" mean in the context of CDR?

Ocean alkalinity enhancement (OAE): Spreading of alkaline materials on the oceannsurface to increase the alkalinity of the water and thus increase ocean CO2 uptake.

In other words, all processes that increase the amount of alkalinity (or charge balance of ions) in the ocean, resulting in a carbon dioxide flux from the air to the ocean and an increase indissolved inorganic carbon concentration

Sources:

  1. The State of CDR, 2nd Edition
  2. CDR Primer