ESS229
Prof. Jin-Yi Yu
Example
Q: The surface pressure decreases by 3 hPa per 180 km in the eastward direction. A ship steaming eastward at 10
km/h measures a pressure fall of 1 hPa per 3 h. What is the pressure change
on an island that the
ship is passing?
•A: The pressure change on the island ( ) can be linked to the pressure change on the ship ( ) in the following way:
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