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Assertion (A): Satellite radar changed estimates of how much tropical rain comes from shallow clouds.
Reason (R): Surface observations over the open ocean had been too sparse to settle the question.

  • A.Both A and R are true, and R is the correct explanation of A
  • B.Both A and R are true, but R is not the correct explanation of A
  • C.A is true but R is false
  • D.A is false but R is true

Answer: A

Both are true and the reason gives the observational gap, and shallow warm rain had been systematically underestimated. Space based measurement gave the first uniform coverage of the oceans. Gauges cannot be placed across the open ocean at all.

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