: Paléoclimatologie: equatorial upwelling

natural phenomenon > oceanic phenomenon > upwelling > equatorial upwelling

equatorial upwelling

Upwelling at the equator is associated with the Intertropical Convergence Zone (ITCZ) which actually moves, and consequently, is often located just north or south of the equator. Easterly (westward) trade winds blow from the Northeast and Southeast and converge along the equator blowing West to form the ITCZ. Although there are no Coriolis forces present along the equator, upwelling still occurs just north and south of the equator. This results in a divergence, with denser, nutrient-rich water being upwelled from below, and results in the remarkable fact that the equatorial region in the Pacific can be detected from space as a broad line of high phytoplankton concentration. (Adapted from: https://en.wikipedia.org/wiki/Upwelling)

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