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Questions and Answers
What changes occur to ocean currents and circulation during tropicalisation?
What changes occur to ocean currents and circulation during tropicalisation?
- They remain unaffected by tropicalisation.
- They always strengthen due to the increase in water temperature.
- They may weaken or change direction due to altered wind patterns and increased rainfall. (correct)
- They completely reverse direction due to the change in salinity.
How does tropicalisation impact ocean currents?
How does tropicalisation impact ocean currents?
- It has no impact on ocean currents.
- It causes ocean currents to become more turbulent.
- It always accelerates ocean currents due to higher temperatures.
- It can lead to the slowing down or redirection of ocean currents. (correct)
What effect can altered wind patterns have on ocean currents during tropicalisation?
What effect can altered wind patterns have on ocean currents during tropicalisation?
- They always strengthen ocean currents due to increased energy transfer.
- They cause ocean currents to flow in a straighter path.
- They can cause ocean currents to change direction or weaken. (correct)
- They have no impact on ocean currents.
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Study Notes
Tropicalisation and Ocean Currents
- Tropicalisation leads to changes in ocean currents and circulation patterns, with a shift towards more tropical-like conditions.
- Weakened wind patterns during tropicalisation reduce the Trade Winds and westerlies, resulting in a decrease in ocean circulation and upwelling.
- The altered wind patterns cause a slowdown of the ocean's thermohaline circulation, leading to changes in ocean heat transport and nutrient distribution.
Impact on Ocean Currents
- Tropicalisation affects the strength and direction of ocean currents, with a potential increase in western boundary currents and a decrease in eastern boundary currents.
- Changes in ocean currents impact the distribution of marine life, with potential winners and losers among species.
Effect of Altered Wind Patterns
- Changes in wind patterns during tropicalisation alter the wind-driven ocean circulation, leading to changes in ocean gyres and eddy formation.
- Weakened winds reduce the ocean's mixed layer depth, leading to changes in ocean stratification and nutrient availability.
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