Solar spectrum energy distribution

What is solar spectrum?

Solar spectrum refers to the distribution of solar irradiation across different wavelengths, including UV light, visible light (sunlight), and near-infrared light. It plays a crucial role in efficiently harnessing solar energy through photocatalysis. AI generated definition based on: Interface Science and Technology, 2023

What is the distribution of solar energy?

He called this the infrared region. We can now accurately determine the distribution of the solar energy, which peaks around 5000 Å (500 nm), presents < 10% in the UV, < 50% in the visual ( 4000 - 7000 Å ) ( 400 - 700 nm ) and < 50% in the infrared. At the Earth’s surface the solar energy received is approximately 1000 W/m2 (Fig. 5.1).

What is the irradiance of the solar spectrum?

As depicted in Fig. 1.9, the solar spectrum is made up of 3%–5% UV light, 42%–43% visible light, and 52%–55% near-infrared (NIR) light . The irradiance at earth's surface is lower than that at the top of atmosphere due to light scattering and absorption by certain gas molecules (N 2, O 2, H 2 O, CO 2, etc.).

Which part of the solar emission spectrum does the sun emit?

The Sun's emission in the extreme ultraviolet part of the solar emission spectrum. Credit: NASA Goddard Space Flight Center via flickr The Sun emits radiation from X-rays to radio waves, but the irradiance of solar radiation peaks in the visible wavelengths (see figure below).

Why is the solar spectrum important?

It contains key features which can be used not only to process detailed solar images but which also allow us to observe and analyze the dynamics and magnetic effects critical to improving our understanding of the Sun. The solar spectrum has been observed and recorded from the time of Newton.

What are the different parts of the solar spectrum?

An overview of the various parts of the solar spectrum is provided in Table 1. The spectral variable is the wavelength λ= c /ν, where c is the speed of light and ν is the frequency (s −1 or Hz). In the UV and visible spectral range, λ is expressed in nanometers (1 nm=10 −9 m).