At which latitude, heat gain through insolation approximately equals heat loss through terrestrial radiation?

Options

A. `66^(@)` North and South
B. `221^(1//2^(@))` North and South
C. `40^(@)` North and South
D. `42^(1//2^(@))` North and South

Answer

To determine the latitude at which heat gain through insolation approximately equals heat loss through terrestrial radiation, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concepts**:
- **Insolation** refers to the incoming solar radiation received by the Earth.
- **Terrestrial Radiation** refers to the long-wave radiation emitted by the Earth and its atmosphere.

2. **Identify Key Latitudes**:
- The equator receives the maximum insolation due to direct sunlight.
- As we move away from the equator towards the poles, the angle of sunlight decreases, leading to less insolation.

3. **Determine the Balance Point**:
- The balance between heat gain (insolation) and heat loss (terrestrial radiation) occurs at specific latitudes.
- According to the information provided, this balance is found around 22 degrees north and 22 degrees south of the equator.

4. **Conclusion**:
- Therefore, the latitudes where heat gain through insolation approximately equals heat loss through terrestrial radiation are **22 degrees North and 22 degrees South**.

### Final Answer:
The latitude at which heat gain through insolation approximately equals heat loss through terrestrial radiation is **22 degrees North and 22 degrees South**.

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