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Chapter 2: Problem 13

What is the solar constant? Why is it important to know?

Short Answer

Expert verified
The solar constant is a measure of the amount of solar radiation received at the outer atmosphere of the Earth. It is approximately \(1361 \, \text{W/m}^2\). It is a crucial constant for understanding Earth's climate system because it represents the total amount of solar energy available, affecting factors like temperature.

Step by step solution

01

Define the solar constant

The solar constant is a measure of the amount of solar electromagnetic radiation received at the outer atmosphere of the Earth. It has an approximate value of \(1361 \, \text{W/m}^2\). It is called a 'constant' because it is considered that the detected value doesn't change appreciably with solar cycles or other variations.
02

Explain the importance

The solar constant is fundamental for studying and understanding Earth's climate system because it represents the total amount of solar energy input at the top of the atmosphere. Any changes in the solar constant can have significant impacts on our climate, including changes in temperature. It is used to determine the amount of solar radiation that is available for conversion to thermal and electrical energy.

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