LECTURE 2.3: Hydrology: Solar Radiation Flashcards

1
Q

It is the energy emitted by the sun in the form of electromagnetic waves and travels through space. It encourages photosynthesis, evaporation, and hydrologic cycle.

A

Solar Radiation

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2
Q

It is the amount of solar radiation received by the surface. It is typically measured in watts per sq.m.

A

Solar Irradiance

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3
Q

What influences solar radiation?

A

Type of wave
Time of day
Seasons
Cloud
Latitude
Altitude
Atmospheric Circulation

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4
Q

It is another term for solar radiation or solar energy. It can be measured in different ways, including by the amount of solar radiation that is received by a surface

A

Solar Irradiation

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5
Q

What is the composition of solar radiation?

A

Visible light
Ultraviolet Radiation
Infrared Radiation
Other Components
• X-ray
• Gamma Rays
• Radiowaves

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6
Q

These are shorter wavelength and beyond violet in the color spectrum

A

Ultraviolet Radiation

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7
Q

These are longer wavelength and beyond red in the color spectrum

A

Infrared Radiation

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8
Q

What is the importance of solar radiation?

A

• Essential energy source
• Life support

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9
Q

What are the factors influencing solar radiation ?

A

Atmospheric Factors
Geographical Factors
Seasonal Variations

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10
Q

What are the factors under atmospheric Factors?

A

Atmospheric Composition
Aerosols and Particles

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11
Q

What are the sources of aerosols?

A

Natural Sources
Anthropogenic Sources (Artificial Sources)

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12
Q

What are the factors under geographical factors?

A

Latitude
Altitude

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13
Q

What are the factors under seasonal variations?

A

Earth’s Tilt and Seasons
Sun Path and Solar Declination

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14
Q

It happens when latitude is ahead and shifting from the tropic of Cancer to the tropic of Capricorn

A

Solar Declination

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15
Q

What are the different atmospheric effects?

A

Direct Normal Irradiance
Diffuse Irradiance
Albedo Irradiance
Global Horizontal Irradiance
Global In-plane Irradiance

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16
Q

It is an atmospheric effect where radiation from the sun reaches the earth without scattering

A

Direct Normal Irradiance

17
Q

It is an atmospheric effect where radiation is scattered by the atmosphere and clouds arrive from all directions

A

Diffuse Irradiance

18
Q

It is an atmospheric effect where a direct or diffuse radiation is reflected from the soil or nearby surfaces (lakes, snow etc )

A

Albedo Irradiance

19
Q

It is an atmospheric effect where the total amount of shortwave radiation is received from above by the horizontal surface. It includes both Direct Normal Irradiance and Diffuse Horizontal Irradiance

A

Global Horizontal Irradiance

20
Q

It is an atmospheric effect where the total amount of radiation is received from above by an inclined surface

A

Global In-plane Irradiance

21
Q

What are the different instruments used to measure solar radiation?

A

Pyranometer
Pyrheliometer
Spectoradiometer

22
Q

It is a device that can be used to measure both beam (direct) radiation and diffuse radiation

A

Pyranometer

23
Q

It is a device used for measuring direct beam radiation at normal incidence

A

Pyrheliometer

24
Q

It is a device used to measure solar radiation spectrally resolved

A

Spectoradiometer

25
It is also known as direct sunlight
Beam Radiation
26
Solar radiation scattered by aerosols, dust, and molecules
Diffuse Radiation
27
It is also known as global radiation
Total Radiation