Composition and Structure of Atmosphere | Class 11 Geography Notes

Terrestrial Radiation

After the Earth absorbs short wave solar radiation, it itself becomes a radiating body, emitting energy back to the atmosphere and space in the form of long wave radiation, known as terrestrial radiation. This long wave radiation heats the atmosphere from below. Atmospheric gases, especially carbon dioxide and other greenhouse gases, absorb much of this terrestrial radiation, warming the atmosphere indirectly. The atmosphere then radiates and transmits heat back to space. The balance between incoming solar radiation and outgoing terrestrial radiation maintains Earth's temperature within a range suitable for life. This process is fundamental to the greenhouse effect, which keeps the planet warm enough to sustain ecosystems.

📊 Diagram: Figure 8.2: Heat budget of the earth

🔗 Connection: This section connects to the detailed explanation of Earth's heat budget and how energy is balanced globally.

Table on page 8 (4×2)

Table on page 9 (8×3)