Earth's Energy Balance Quiz
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Questions and Answers

What is the main reason for Earth's energy imbalance?

  • Changes in cloud cover
  • Variations in Earth's orbit
  • Increasing greenhouse gas concentrations (correct)
  • Decrease in albedo
  • Which feedback mechanism generally causes cooling in the Earth's atmosphere?

  • High albedo (correct)
  • Thick warm clouds
  • Thin cold clouds
  • Increase in water vapor
  • What is the effect of high water content in the atmosphere on outgoing IR radiation?

  • Absorbs outgoing IR radiation (correct)
  • Reflects outgoing IR radiation
  • Has no effect on outgoing IR radiation
  • Amplifies outgoing IR radiation
  • Which feedback mechanism is associated with an increase in greenhouse effect due to a rise in temperature?

    <p>Water vapor feedback</p> Signup and view all the answers

    What is the likely effect of cloud feedback on climate?

    <p>Positive</p> Signup and view all the answers

    What is the main reason for the current global mean energy budget imbalance?

    <p>Greenhouse gas forcing</p> Signup and view all the answers

    Which factor is NOT contributing to the habitability of Earth?

    <p>Ozone layer thickness</p> Signup and view all the answers

    What is the main function of convection in the atmosphere?

    <p>Producing weather, including clouds</p> Signup and view all the answers

    What is the role of water and CO2 in the atmosphere?

    <p>Major greenhouse gases</p> Signup and view all the answers

    What is the expected response of Ts (surface temperature) to the existing energy imbalance?

    <p>Rise by 0.6°C</p> Signup and view all the answers

    Which feedback mechanism is currently operating as a negative feedback?

    <p>Outgoing IR flux-temperature feedback</p> Signup and view all the answers

    How do clouds affect climate?

    <p>By changing planetary albedo and absorbing and re-emitting IR radiation</p> Signup and view all the answers

    Study Notes

    Energy Imbalance and Feedback Mechanisms

    • The main reason for Earth's energy imbalance is the excess of incoming solar radiation over outgoing long-wave radiation.

    Cooling Feedback Mechanisms

    • The feedback mechanism that generally causes cooling in the Earth's atmosphere is the ice-albedo feedback.

    Water Content and Outgoing IR Radiation

    • High water content in the atmosphere reduces outgoing IR radiation, leading to an increase in the greenhouse effect.

    Feedback Mechanisms and Temperature

    • The feedback mechanism associated with an increase in the greenhouse effect due to a rise in temperature is the water vapor feedback.

    Cloud Feedback and Climate

    • Cloud feedback is likely to have a positive effect on climate, amplifying the warming trend.

    Global Mean Energy Budget Imbalance

    • The main reason for the current global mean energy budget imbalance is the increasing levels of greenhouse gases, such as CO2, in the atmosphere.

    Factors Contributing to Habitability

    • One factor that is NOT contributing to the habitability of Earth is the absence of a strong magnetic field.

    Convection in the Atmosphere

    • The main function of convection in the atmosphere is to distribute heat from the equator to the poles.

    Roles of Water and CO2

    • Water and CO2 play a crucial role in the atmosphere, with water being a potent greenhouse gas and CO2 being a key contributor to the greenhouse effect.

    Surface Temperature Response

    • The expected response of Ts (surface temperature) to the existing energy imbalance is to continue to rise.

    Negative Feedback Mechanisms

    • The ice-albedo feedback is currently operating as a negative feedback mechanism, cooling the planet.

    Clouds and Climate

    • Clouds affect climate by influencing the Earth's energy balance, with low-level clouds generally cooling the planet and high-level clouds warming it.

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    Related Documents

    Earth's Energy Balance 2023 PDF

    Description

    Test your knowledge of Earth's energy balance with this quiz. Explore topics such as infrared and ultraviolet radiation, solar energy absorption, greenhouse gas concentrations, and the planetary energy budget. Learn about the imbalance in Earth's energy budget and its implications for climate change.

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