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Compared with a gauge, weather radar offers

  • A.a direct measurement at a single point only, and no more
  • B.higher accuracy at every individual location measured
  • C.no useful information about precipitation at all
  • D.spatial coverage at the cost of indirect measurement

Answer: D

A gauge measures accurately at one point while a radar infers rainfall over a wide area. Combining the two, using gauges to adjust the radar field, is standard operational practice. Neither instrument alone gives an adequate rainfall field.

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