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— Direct solar beam - have specific directions, from sun to earth's surfaces - 17 %
— Diffuse radiation from clouds - 21 % and from sky - 7 % (comes from all directions of the hemisphere)
— Reflectivity is the reflected fraction of incident radiation at specific wavelength.
— Albedo (α) is the reflection over the entire solar spectrum (the whole range of wavelengths).
Examples:
— Snow is very reflective to visible and completely reflective to infrared radiation. Albedo is 1 or 100 %.
In leaves, there is less absorption and more reflection for the green light in the visible spectrum, compared to blue and red light, where reflection is much less, causing the leaves to be appeared as green.
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What is a pyranometer?
A pyranometer measures direct and diffuse solar radiation.
The atmosphere is heated chiefly by radiation emitted by Earth?
The atmosphere is heated chiefly by radiation from Earth's surface rather than by direct solar radiation because about 50 percent of the solar energy is absorbed at Earth's surface. 30 percent is reflected back to space. 20 percent is absorbed by clouds and the atmosphere's gases.
The diffirences between direct sunlight and slanted sunlight?
(slanted - 7 letters) - (direct - 6 letters) = 1 letter.
What is the relationship between solar irradiance and air temperature?
there is direct relationship between irradiance and air temp.
Why does the temperature change when you move away from the sun?
Temperature of what? Temperature is a "property" of material. Farther away from the sun, the heat (radiation) has spread out over such a wider area that the amount of energy per square foot available to heat anything gets smaller and smaller. Or do you just mean "when you step into a shadow"? Then you are not receiving direct radiation from the sun at all.
What is a pyranometer?
A pyranometer measures direct and diffuse solar radiation.
What is the difference between direct radiation and deffuse radiation?
*Difuse* radiation is light that reaches the surface after being reflected and scattered by clouds or other particles in the sky. Direct is that light which has not been reflected.
What is the difference between conduction and radiation?
radiation-energy transferred by waves or rays conduction-transfer of energy that occurs when molecules bump into each other (direct contact)
How do aerosol particles affect insolation?
They scatter sunlight, reducing the amount that reaches the surface as direct radiation (increasing the amount that reaches as diffuse).
What determines the amount of solar energy absorbed by the earth?
Every location on Earth receives sunlight at least part of the year. The amount of solar radiation that reaches any one "spot" on the Earth's surface varies according to these factors:Geographic locationTime of daySeasonLocal landscapeLocal weather.Diffuse and Direct Solar RadiationAs sunlight passes through the atmosphere, some of it is absorbed, scattered, and reflected by the following: Air moleculesWater vaporCloudsDustPollutantsForest firesVolcanoes.This is called diffuse solar radiation. 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.
What is the difference between direct tax and non-direct tax?
difference b/w direct tax and indirect tax
What is the difference between direct and indirect global warming potential?
They are two types of radiation 1. Direct radiation 2.Diffused radiation The solar radiation reaching the surface of atmosphere of earth is known as extra terrestrial radiation. In which some part of radiation directly enters the earth atmosphere and some part enters the earth atmosphere by reflecting from clouds, gases , aerosols etc., The radiation which directly enters the earth atmosphere is known as "Direct radiation" The radiation which enters the earth atmosphere by reflecting from clouds, gases, aerosols is known as diffused radiation. In materiology the sum of both Direct radiation and Diffused radiation is called total radiation.
What is the difference between direct object and object?
The direct object is the noun or pronoun that receives the action of the verb directly. An object, on the other hand, is a more general term that refers to any noun or pronoun that receives the action of a verb, including direct and indirect objects.
What is the difference between it's and it?
the difference between it's and it..is that it's means it is, while "it" is direct to the object .
Difference between direct and indirect address instruction?
the different between direct and indirect adress instruction
Differentiate between direct marketing and indirect marketing?
The difference between direct marketing and indirect marketing.
What Is terrestrial radiation and How does it differ from solar radiation?
They are essentially the same thing. Solar radiation from the sun is made up of two components: (1) direct solar raidation; and (2) diffuse solar radiation. Global radiation refers to the sum of direct and diffuse fractions.
