Which consequence results when thermocline depth increases anomalously during an El Niño event?

💡 Explanation

When the thermocline depth abnormally increases during El Niño, upwelling weakens because the colder, nutrient-rich water is further from the surface, inhibiting upward movement. Therefore nutrient upwelling is reduced, rather than increased trade winds, reduced rainfall, or increased CO2 absorption, which require different pressure or temperature gradients.

• Which phenomenon causes the observed Coriolis effect on global weather patterns?
• Which mechanism causes tsunami generation when a submarine earthquake occurs involving vertical seafloor displacement?
• Which atmospheric phenomenon results from thermally-driven convection cells?
• Which process dictates the path of low-pressure weather systems along the atmospheric jet stream?
• Which effect is directly enhanced by increased upwelling along a coastline?
• Which outcome arises when a large earthquake ruptures a transform fault beneath a populated coastal city?