Question

Satellite remote sensor captures the sea surface temperature up to a depth of:

• A. \(\text{10 micron} \)
• B. \(\text{50 micron} \)
• C. \(\text{100 micron} \)
• D. \(\text{150 micron} \)

Hint:

Satellite sensors measure sea surface temperature (SST) using thermal infrared radiation, detecting the top 10 microns of the ocean surface.

Answer 1

The Correct Option is A

Step 1: Understanding sea surface temperature (SST) measurement. - Satellite-based remote sensors measure sea surface temperature (SST) using thermal infrared (TIR) sensors. - These sensors detect the temperature of the uppermost thin layer of the ocean.
Step 2: Depth of SST measurement. - Thermal infrared sensors capture the temperature of only the top 10 microns (0.01 mm) of the ocean surface. - This is often called the "skin temperature" of the ocean.
Step 3: Explanation of incorrect options. - 50 micron b., 100 micron c., and 150 micron d.: These depths are too deep for infrared sensors, as infrared radiation only penetrates a few microns.
Step 4: Selecting the correct option. Since infrared sensors measure only the top 10 microns of the ocean surface, the correct answer is a. 10 micron.