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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.
Direct solar radiation refers to sunlight that reaches the Earth's surface in a straight line from the sun, while diffuse solar radiation is sunlight that reaches the Earth's surface after being scattered by the atmosphere. Direct radiation is more intense and has a fixed direction, while diffuse radiation is less intense but more evenly distributed.
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Who invented the pyranometer?
The pyranometer was invented by Angström in 1893. It is a device used to measure solar radiation, specifically the direct and diffuse components of sunlight.
What is a pyranometer?
A pyranometer is a device used to measure solar radiation. It measures the total solar radiation received from the sun at a specific location in watts per square meter. Pyranometers are commonly used in meteorology, climatology, solar energy research, and agriculture.
What are 3 ways the atmosphere moves energy?
Convection: Warm air rises and cool air sinks, creating vertical movement of energy. Conduction: Energy is transferred through direct contact between the atmosphere and Earth's surface. Radiation: Solar energy is absorbed by the atmosphere and re-emitted as infrared radiation.
What is the instrument used for measuring sunlight?
A pyranometer is an instrument used to measure the total solar radiation received from the sun, typically expressed in watts per square meter. It is designed to capture both direct and diffuse sunlight.
What does direct sunlight mean?
Direct sunlight refers to sunlight that is not obstructed or filtered by any barriers, such as clouds, buildings, or trees, and shines directly on a surface. It provides the strongest levels of solar radiation and heat.
What is the difference between direct radiation and deffuse radiation?
Direct radiation comes from a single source and follows a straight path, while diffuse radiation is scattered sunlight that has been redirected in various directions by the atmosphere or other surfaces. Direct radiation is more intense and has a more concentrated energy than diffuse radiation.
Why there is a difference in absorbed and emitted radiation in equatorial and polar areas?
There is a difference in absorbed and emitted radiation in equatorial and polar areas due to variations in solar angle and distribution. Equatorial regions receive more direct sunlight throughout the year, leading to higher absorption of radiation, while polar regions receive less direct sunlight due to the tilt of the Earth's axis, resulting in lower absorption and more emission of radiation to maintain energy balance.
What is the difference between direct tax and non-direct tax?
difference b/w direct tax and indirect tax
Who invented the pyranometer?
The pyranometer was invented by Angström in 1893. It is a device used to measure solar radiation, specifically the direct and diffuse components of sunlight.
What is the difference between the transfer of heat by conduction and that by radiation?
Heat conduction is the transfer of heat through a material by direct contact between particles. Heat radiation is the transfer of heat in the form of electromagnetic waves through empty space. Conduction requires a medium, while radiation does not.
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 a pyranometer?
A pyranometer is a device used to measure solar radiation. It measures the total solar radiation received from the sun at a specific location in watts per square meter. Pyranometers are commonly used in meteorology, climatology, solar energy research, and agriculture.
What was the difference between the thermometer readings in the drawer and in direct sunlight?
The thermometer readings in the drawer were typically lower than in direct sunlight. This is because objects in the drawer are shielded from direct heat and radiation from the sun, resulting in a cooler temperature reading.
What is the difference between grassroots and direct lobbying?
nothing
What is the difference between indirect and direct quote life insurance?
The difference between indirect and direct quote life insurance is that the insurance level will differ. Direct is when someone dies, indirect involves other factors.
