EMES

What is solar insolation?

The amount of solar radiation received at Earth’s surface.

How does solar insolation vary with latitude?

Insolation is higher near the equator where sunlight strikes directly and lower at higher latitudes where sunlight arrives at a more oblique angle.

What role does the tilt of Earth’s axis play in solar insolation variation?

The tilt leads to differences in the angle of sunlight, affecting the concentration of solar energy and resulting in seasonal changes.

What is the significance of the equinoxes regarding solar insolation?

During equinoxes, the sun is directly over the equator, resulting in nearly equal day and night lengths globally and moderate insolation.

What happens during the June solstice related to solar insolation?

The sun is directly over the Tropic of Cancer, maximizing insolation in the Northern Hemisphere.

What occurs during the December solstice regarding solar insolation?

The sun is directly over the Tropic of Capricorn, maximizing insolation in the Southern Hemisphere.

How does insolation differ between the tropics and polar regions?

Tropics receive consistent high insolation year-round; polar regions experience extreme variations, with midnight sun and polar night.

What is absorption in the context of radiation?

Absorption is when a surface takes in incoming radiation and converts it to heat, increasing its temperature.

What is reflection in the context of radiation?

Reflection is when incoming radiation bounces off a surface without being absorbed, not contributing to surface heating.

What wavelengths are associated with solar radiation?

Primarily shortwave radiation, including UV, visible light, and near-infrared.

What wavelengths are associated with terrestrial radiation?

Primarily longwave radiation, including infrared radiation.

What is the energy level of solar radiation compared to terrestrial radiation?

Solar radiation has a higher energy level, while terrestrial radiation has a lower energy level due to cooler temperatures.