Which factor is NOT considered a key oceanographic parameter?

In oceanographic studies, key parameters typically include temperature, currents, and salinity, as they are fundamental in understanding the physical and chemical characteristics of ocean waters. Temperature affects water density, circulation patterns, and biological processes. Currents are critical for understanding ocean circulation, heat distribution, and nutrient transport. Salinity influences water density and stratification, impacting marine ecosystems.

Wind direction, while important in certain oceanographic contexts, particularly in relation to surface currents and wave generation, is not generally classified as a key oceanographic parameter. It influences ocean conditions but is more of an environmental factor that affects these primary parameters rather than a characteristic of the ocean itself. Therefore, it does not fall into the same category as the other factors listed, making it the correct choice in this context.