What three things may happen to incoming solar radiation?
Once energy from the Sun gets to Earth, several things can happen to it:
- Energy can be scattered or absorbed by aerosols in the atmosphere.
- Short wavelengths are absorbed by ozone in the stratosphere.
- Clouds may act to either reflect energy out to space or absorb energy, trapping it in the atmosphere.
What surface absorbs the most solar radiation?
About 23 percent of incoming solar energy is absorbed in the atmosphere by water vapor, dust, and ozone, and 48 percent passes through the atmosphere and is absorbed by the surface.
What determines solar radiation?
The angle of the sun determines solar irradiance. The greater the angle, the lower the solar intensity. The lower the angle of the sun, the larger amount of ozone the light has to pass through 9. This is also factor in ultraviolet irradiance.
How are solar hours calculated?
A peak sun hour is defined as one hour in which the intensity of solar irradiance (sunlight) reaches an average of 1,000 watts (W) of energy per square meter (roughly 10.5 feet). Another way to put it: 1 peak sun hour = 1000 W/m² of sunlight per hour.
What is another word for solar radiation?
What is another word for solar radiation?
| solar energy | solar power |
|---|---|
| insolation | sun energy |
How harmful is solar radiation?
Excessive exposure to the sun is known to be associated with increased risks of various skin cancers, cataracts and other eye diseases, as well as accelerated skin ageing. It may also adversely affect people’s ability to resist infectious diseases, and compromise the effectiveness of vaccination programmes.
How much radiation does a person get from the sun?
The average annual dose or exposure from cosmic radiation is 0.33 mSv (33 mrem) or 11% of a person’s yearly exposure due to all natural sources of radiation. This yearly amount of radiation is similar to the amount of radiation from three chest x-rays.
How does solar radiation affect the climate?
The Sun’s rays warm our world, stir air and ocean currents, and catalyze chemical reactions in the atmosphere. The Sun-warmed surface evaporates water to form rainclouds that redistribute fresh water around the world.
What is the relationship between solar radiation and temperature?
When the sun’s rays strike Earth’s surface near the equator, the incoming solar radiation is more direct (nearly perpendicular or closer to a 90˚ angle). Therefore, the solar radiation is concentrated over a smaller surface area, causing warmer temperatures.
What are the factors controlling distribution of solar radiation on the globe?
Solar elevation The longer the path through the atmosphere, the more UV that is absorbed, and this occurs when the sun is near the horizon, whereas when the sun is directly above us the amount of atmosphere is lower which means that less UV is absorbed and a higher level reaches us.
What region receives the least amount of solar radiation?
The sun’s rays do not strike the Earth’s surface as directly at the North Pole; they are less focused. The equator receives the most solar radiation in a year. The difference in the amount of solar energy the land receives causes the atmosphere to move the way it does.