What happens to the temperature of water during upwellings?

During upwellings, the temperature of the water decreases significantly. This phenomenon occurs when deep, cooler water rises to the surface, replacing the warmer surface water. Upwellings are often driven by wind patterns and the movement of ocean currents, which push surface waters away and allow the cooler waters from the depths to emerge.

The upwelled water is typically nutrient-rich, which supports a wide variety of marine life, including phytoplankton and fish populations. As this cooler water rises to the surface, it displaces the warmer water above, leading to a noticeable drop in surface temperature. This cooling effect can have important ecological implications, influencing local weather patterns and supporting rich marine ecosystems.