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The band of frequent synoptic scale activity across an ocean basin is called a _____.

  • A.surf zone
  • B.polar front, which is the surface boundary separating polar air from mid-latitude air in each hemisphere
  • C.storm track
  • D.jet stream, which is the narrow band of strong upper level winds lying above the baroclinic zone below

Answer: C

A storm track is identified objectively as a band of maximum bandpass filtered variance, running northeastward across the Atlantic and Pacific in the northern hemisphere. The jet stream and polar front are closely associated features of the same baroclinic zone, and the surf zone belongs to the stratosphere. The three tropospheric features move together as the season changes. Working one numerical case through both cases side by side fixes the distinction better than any rule of thumb.

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