Module 6: Climate Change. Phenomena, impacts and strategie

The energy emitted by the Earth _____ and therefore it keeps trapped by the atmosphere.

• is mostly longwave

• is mostly shortwave

• has a similar wavelength to the energy emitted by the Sun

The energy emitted by the Sun is mostly shortwave and, therefore, …

• It goes through the atmosphere and reaches the Earth surface.

• It keeps trapped by the atmosphere.

What would be the estimated Earth’s temperature if the layer of greenhouse gases did not exist?

• -18ºC

• 0ºC

• 15ºC

• It would take values similar to the current ones

Astronomical factors such as variations in the rotation axis of the Earth's and the solar orbit shape are considered to be responsible for:

• 8% of the climate change

• 0.8% of the climate change

• 0.08% of the climate change

• 18% of the climate change

Which of the following are anthropogenic factors (man-made) affecting climate change?

• Variations in albedo

• Changes in soil use

• Changes in the variation of the absorbed terrestrial radiation

• All of them affect

Which of the following surfaces have higher albedo values?

• Bright surfaces

• Dark surfaces

Which of the following surfaces have lower albedo values?

• Brilliant surfaces

• Matt surfaces

In relation to the Global Warming Potential (GWP), which of the following sentences is false?

• It represents the quantity of CO₂ (expressed in kg) which would warm the Earth as much as 1 kg of that gas.

• GWP is 1 for CO₂.

• Provides a common scale for measuring the climate effects of different gases.

• It estimates the resulting rise in the average surface temperature of the world, caused by a greenhouse gas in relation to the temperature rise which the same mass of CO₂ would cause.

Regional climate models offer greater accuracy than global models.

• True

• False

Which of the following climate changes projected in Spain is more certain?

• Progressive trend to increased average temperatures throughout the century.

• More frequency of days with extreme wind on the peninsula, especially in Summer.

• Increased precipitation in the west of the peninsula during Winter and in the Northeast during Autumn.

• Precipitation changes tend to be more significant in the more accelerated emissions scenario (SRES-A2).