Ocean-Atmosphere Interactions and Feedbacks

The video explains the coupled ocean-atmosphere system, focusing on the exchange of heat, salinity, and momentum. It discusses the complexity of these interactions, including feedback loops and their impact on climate variability. The video also covers advanced feedback mechanisms like Ekman Pumping and highlights the El Niño phenomenon as an example of long-distance climate variability.

What are the three main properties exchanged between the ocean and atmosphere?

• Momentum, pressure, and heat

• Salinity, pressure, and density

• Heat, pressure, and density

• Heat, salinity, and momentum

How can local changes in ocean properties affect distant regions?

• Through direct radiation

• Via ocean currents

• Through direct evaporation

• By immediate precipitation

What is a simple form of a feedback loop in the ocean-atmosphere system?

• Increased salinity causing more evaporation

• A heated object radiating energy and cooling down

• Wind causing ocean currents to stop

• Precipitation increasing ocean temperature

What is Ekman Pumping?

• A mechanism that brings colder water to the surface

• A process where warm water is pushed deeper

• A method of increasing ocean salinity

• A way to measure sea surface temperature

What role do feedback loops play in the ocean-atmosphere system?

• They simplify the system

• They add complexity to the system

• They eliminate climate variability

• They stabilize ocean currents

What happens to the three properties over longer timescales?

• They become unbalanced

• They decrease in variability

• They increase in intensity

• They roughly balance each other

What can short-term perturbations in the ocean-atmosphere system lead to?

• Increased ocean salinity

• Decreased atmospheric pressure

• Stable weather patterns

• Climate variability

What is the result of positive feedback loops in the ocean-atmosphere system?

• Decreased variability

• Balanced heat exchange

• Amplified deviations from a mean state

• Increased stability

What is the El Niño Southern Oscillation?

• A local weather pattern

• A type of ocean current

• A long-distance climate variability phenomenon

• A method of measuring sea temperature

How does El Niño affect temperatures?

• It only affects temperatures in South America

• It causes temperature changes in distant regions

• It stabilizes temperatures globally

• It only affects temperatures in Australia