General Navigation USCG Question #1331 (Set 42)

In low latitudes the range of the diurnal variation of pressure is up to __________.

Official USCG Answer & Rule Citation

Correct Answer: Option B — 3.0 millibars

According to Bowditch, atmospheric pressure in low latitudes undergoes a regular diurnal oscillation with a magnitude reaching up to approximately 3.0 millibars due to solar heating effects creating atmospheric tides.

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