how much of the sun's ultraviolet radiation reaches earth's surface

How much of the suns ultraviolet radiation reaches Earth’s surface?

Of the light that reaches Earth’s surface, infrared radiation makes up 49.4% of while visible light provides 42.3% 9. Ultraviolet radiation makes up just over 8% of the total solar radiation.

How much of the sun’s incoming radiation is absorbed by Earth’s surface?

71 percent 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. Thus, about 71 percent of the total incoming solar energy is absorbed by the Earth system.

How much of the sun’s radiation does earth receive quizlet?

How much of the sun’s incoming energy is reflected back out to space? About one-third of the sun’s incoming energy is reflected back out to space. How much of the energy striking Earth is absorbed by Earth’s surface? About one-half of the energy striking Earth is absorbed by Earth’s surface.

What is solar radiation reaching the Earth’s surface?

The solar radiation that reaches the Earth’s surface without being diffused is called direct beam solar radiation. The sum of the diffuse and direct solar radiation is called global solar radiation. Atmospheric conditions can reduce direct beam radiation by 10% on clear, dry days and by 100% during thick, cloudy days.

How does UV affect Earth’s surface?

A layer of ozone in the upper atmosphere absorbs UV radiation and prevents most of it from reaching the Earth. … This means that more ultraviolet radiation can pass through the atmosphere to the Earth’s surface, particularly at the poles and nearby regions during certain times of the year.

How much energy reaches the Earth from the Sun?

A total of 173,000 terawatts (trillions of watts) of solar energy strikes the Earth continuously. That’s more than 10,000 times the world’s total energy use. And that energy is completely renewable — at least, for the lifetime of the sun.

What percentage of the total incoming radiation to the Earth reaches the ground?

The incoming solar radiation is known as insolation. The amount of solar energy reaching the Earth is 70 percent. The surface of the Earth absorbs 51 percent of the insolation. Water vapor and dust account for 16 percent of the energy absorbed.

What percent of radiation is lost after reaching Earth’s surface?

1 Earth’s heat budget. Of all of the solar radiation reaching Earth, 30% is reflected back to space and 70% is absorbed by the Earth (47%) and atmosphere (23%). The heat absorbed by the land and oceans is exchanged with the atmosphere through conduction, radiation, and latent heat (phase change).

What percentage of the sun’s energy that reaches Earth’s surface is absorbed by ocean and land?

48 percent For the energy budget at Earth’s surface to balance, processes on the ground must get rid of the 48 percent of incoming solar energy that the ocean and land surfaces absorb.

What percentage of solar radiation that reaches Earth’s atmosphere is absorbed by Earth quizlet?

The surface of Earth absorbs approximately 50 percent of the solar energy that enters the top of the atmosphere.

How much sunlight received at the top of the atmosphere actually reaches the ground quizlet?

On a clear day, about 80% of incoming solar radiation passes through the atmosphere to reach the earth’s surface. On a cloudy day, generally less than 50% of the incoming solar radiation will pass through the atmosphere and reach the earth’s surface.

When volcanic dust fills the air the amount of solar radiation sunlight reaching the earth’s surface can be measurably reduced quizlet?

When volcanic dust fills the air, the amount of solar radiation (sunlight) reaching the Earth’s surface can be measurably reduced. The Earth would not be habitable planet without the greenhouse effect. The 90˚ angle solar rays are striking the Tropic of Cancer on ________.

Does UV radiation heat the earth?

The sun sends energy to Earth in a few different ways: visible light that you can see, infrared radiation that you feel as heat, and rays of UV radiation that you can’t see or feel. … The atmosphere does little to shield these rays—most UVA radiation reaches Earth’s surface.

When solar radiation falls on the Earth’s surface temperature?

Absorption of solar radiation by ozone shields the terrestrial surface from harmful ultraviolet light and warms the stratosphere, producing maximum temperatures of −15 to 10 °C (5 to 50 °F) at an altitude of 50 km (30 miles).

What is the total radiation from the sun on horizontal surface on the earth?

about 1120 W/m2

When 1361 W/m2 is arriving above the atmosphere (when the sun is at the zenith in a cloudless sky), direct sun is about 1050 W/m2, and global radiation on a horizontal surface at ground level is about 1120 W/m2.

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How does UV radiation contribute to global warming?

UV radiation has also been implicated as a contributor to global warming through its stimulation of volatile organic compounds from plants, plant litter and soils. Emission of carbon dioxide (CO₂) from plant litter and soils may also contribute to global warming.

Does the amount of UV light reaching the Earth vary?

It does vary in a predictable manner. It varies based on the orientation relative to the sun: the closer to the equator, the more UV radiation.

How is ultraviolet radiation absorbed?

Most UV-A rays pass right through the ozone layer in the stratosphere. UV-B radiation can be very harmful. Fortunately, most of the sun’s UV-B radiation is absorbed by ozone in the stratosphere. … Fortunately, all UV-C is absorbed by oxygen and ozone in the stratosphere and never reaches the Earth’s surface.

What percentage of the 100% of the energy coming from the sun reaches to the Earth surface?

Only a part of solar radiation reaches the Earth’s surface: 34% of solar radiation is reflected into space by the atmosphere, by clouds and by the Earth’s surface itself. Of the remaining 66%, 19% is absorbed by water vapour, by clouds and by the ozone layer and only 47% on average is absorbed by the Earth’s surface.

What are 4 types of radiation from the sun?

Solar radiation includes visible light, ultraviolet light, infrared, radio waves, X-rays, and gamma rays.

How much solar energy reaches the Earth’s surface at any given moment explain in terms of solar radiation percentage?

At most about 75% of the solar energy actually reaches the earth’s surface, as even with a cloudless sky it is partially reflected and absorbed by the atmosphere. Even light cirrus clouds reduce this to 50%, stronger cirrus clouds to 40%.

How does the amount of heat received by the Earth from the sun able it to support life?

The sun radiates energy in all directions. … The delicate balance between the amount of heat Earth receives from the sun and the heat that Earth radiates back into space makes it possible for the planet to sustain life.

Does the Earth lose heat to space?

Balancing Act

Instead, the only way the Earth loses energy to space is by electromagnetic radiation. At typical planetary temperatures, this energy being shed to space is in the infrared part of the electromagnetic spectrum.

What percentage of the total incoming radiation to the earth is reflected by the atmosphere Brainly?

1.3 Energy Incident at Earth’s Surface

Of the roughly 56% of the incoming solar radiation making it through the atmosphere to Earth’s surface, about 6% gets reflected by the surface and 50% is absorbed at the surface.

Why doesn’t all radiation at Earth reach the surface?

Why doesn’t all radiation directed at earth reach the surface? Rays could be reflected, absorbed, or scattered. … radiation because the sun’s rays and waves have been absorbed by the car. If you put a frying pan on a burner on a stove and turn the burner on, the bottom of the frying pan gets hot.

How much percentage of energy is absorbed from the Sun to Earth Mcq?

How much percent of energy is absorbs from the Sun to Earth? Explanation: When the Earth receives energy from the Sun, the surface of the Earth only absorbs 50% of it. The radiation absorbed by the atmosphere is radiated again in all direction some radiated towards space and radiated back to the surface of the Earth.

What percentage of energy coming from the sun is re radiated towards the space?

30% is directly reflected back i.e re-radiated towards space by clouds, the earth’s surface, and different gases and particles in the atmosphere (the earth’s albedo is 0.3 on average).

Why does only 47 of the sun’s energy reach Earth’s surface?

Only a part of solar radiation reaches the Earth’s surface: 34% of solar radiation is reflected into space by the atmosphere, by clouds and by the Earth’s surface itself. Of the remaining 66%, 19% is absorbed by water vapour, by clouds and by the ozone layer and only 47% on average is absorbed by the Earth’s surface.

What percentage of the sun’s energy that reaches Earth’s surface is absorbed by clouds quizlet?

This energy heats the land and water. 20% is absorbed by gases and particles in the atmosphere. 25% on incoming sunlight is reflected by clouds, dust, and gases in the air.

What percent of the energy the Earth gets from the sun is absorbed by the Earth’s surface thus becoming part of the heat that warms the earth?

The Earth absorbs most of the energy reaching its surface, a small fraction is reflected. In total approximately 70% of incoming radiation is absorbed by the atmosphere and the Earth’s surface while around 30% is reflected back to space and does not heat the surface.

How much solar radiation is reflected by the Earth’s atmosphere and surface quizlet?

Describe quantitatively how much solar radiation is absorbed and reflected by Earth’s atmosphere and surface. About thirty percent of incoming solar radiation is directly reflected by Earth’s albedo. About 1/2 of the solar radiation available at the top of the atmosphere actually reaches the Earth’s surface.

What happens to the solar energy that is absorbed by Earth’s surface?

A small part of the sun’s energy is directly absorbed, particularly by certain gases such as ozone and water vapor. Some of the sun’s energy is reflected back to space by clouds and the earth’s surface. … The absorbed energy is transformed into heat energy.

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How much of the sun’s energy actually reaches the earth quizlet?

About 19% of the energy available is absorbed by clouds, gases (like ozone), and particles in the atmosphere. Of the remaining 55% of the solar energy passing through the Earth’s atmosphere, 4% is reflected from the surface back to space. On average, about 51% of the Sun’s radiation reaches the surface.