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Remote Sensing

Asked 1 times in UPSC Prelims · first asked 2019 · last asked 2019

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For the measurement/estimation of which of the following are satellite images/remote sensing data used? 1. Chlorophyll content in the vegetation of a specific location 2. Greenhouse gas emissions from rice paddies of a specific location 3. Land surface temperatures of a specific location. Select the correct answer using the code given below:

2019Sci & Tech
A1 only
B2 and 3 only
C3 only
D1, 2 and 3

Explanation

Satellite images and remote sensing data are utilized for measuring or estimating various parameters. This includes determining the chlorophyll content in vegetation, monitoring greenhouse gas emissions from specific locations like rice paddies, and assessing land surface temperatures in specific areas. China's HY-1C marine satellite enhances the country's ocean remote sensing capabilities by detecting chlorophyll concentrations, suspended sediment levels, dissolved organic matter, and sea surface temperatures. Therefore, remote sensing technology can assist in addressing both statements 1 and 3 from the options provided, making the correct answer (d) 1, 2, and 3.