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.

[UPSC Civil Services Exam – 2019 Prelims]

(a) 1 Only

(b) 2 and 3 only

(c) 3 only

(d) 1, 2 and 3


Answer: (d)        

Explanation:

  • Satellite data has made it possible to measure various environmental factors with a high degree of accuracy.
  • For instance, land surface temperature can be measured globally and at high temporal resolution using remote sensing techniques.
  • Similarly, chlorophyll content in vegetation can be measured by analyzing the reflection of light in specific wavelengths.
  • Additionally, remote sensing can provide information on greenhouse gas emissions by estimating the concentration of CO2 and CH4 based on reflected sunlight measurements.
  • This can be particularly useful in estimating emissions from specific locations such as rice paddies. Therefore, all three statements are correct.

Consider the following statements:                                                                   The Parliament of India can place a particular law in the Ninth Schedule of the Constitution of India. The validity of a law placed in the Ninth Schedule cannot be examined by any court and no judgement can be made on it. Which of the statements given above is/are correct?

Consider the following statements:                                               

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Consider the following statements:                                                         The Parliament of India can place a particular law in the Ninth Schedule of the Constitution of India. The validity of a law placed in the Ninth Schedule cannot be examined by any court and no judgement can be made on it. Which of the statements given above is/are correct?

Consider the following statements:                                               

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