Civil Engineering - Elements of Remote Sensing - Discussion
Discussion Forum : Elements of Remote Sensing - Section 1 (Q.No. 1)
1.
Which one of the following statements is correct ?
Discussion:
1 comments Page 1 of 1.
Malak said:
1 year ago
The correct answer is "All of these" because:.
Snow albedo decreases with grain size at all wavelengths: Larger grains absorb more light due to increased surface area, leading to lower reflectance.
Maximum effect in the near-IR region: Larger grains significantly reduce reflectance in near-IR because of higher absorption.
Lower effect in the visible region: The visible spectrum is less sensitive to changes in grain size compared to the near-IR region, hence the effect is less pronounced.
Snow albedo decreases with grain size at all wavelengths: Larger grains absorb more light due to increased surface area, leading to lower reflectance.
Maximum effect in the near-IR region: Larger grains significantly reduce reflectance in near-IR because of higher absorption.
Lower effect in the visible region: The visible spectrum is less sensitive to changes in grain size compared to the near-IR region, hence the effect is less pronounced.
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