Difficulty: Easy
Correct Answer: remains unaffected
Explanation:
Introduction / Context:
Before reaching sensors or the surface, solar radiation interacts with atmospheric molecules, aerosols, and clouds. Recognising these interactions is essential for atmospheric correction and accurate reflectance retrieval in remote sensing.
Given Data / Assumptions:
Concept / Approach:
Solar radiation is altered by scattering (Rayleigh, Mie, nonselective) and by selective absorption (e.g., ozone, water vapour). Therefore, a statement claiming it remains unaffected is incorrect.
Step-by-Step Reasoning:
Verification / Alternative check:
Blue sky colour and atmospheric windows (8–14 μm) are direct evidence of wavelength-dependent interaction.
Why Other Options Are Wrong:
Common Pitfalls:
Ignoring aerosols and water vapour; assuming uniform transmittance across wavelengths.
Final Answer:
remains unaffected
Discussion & Comments