How does a strong pressure gradient affect wind speed?

How does a strong pressure gradient affect wind speed?

• A. It reduces wind speed.
• B. It has no effect on wind speed.
• C. It decreases gust potential.
• D. It increases wind speed.

Answer: (D)

A strong pressure gradient increases wind speed because the air is pushed from high to low pressure with greater force when the pressure changes more over a given distance. The wind speed responds to that driving pressure gradient: a steeper gradient means a larger gradient force per unit mass, so air accelerates more and winds are faster. In practical terms, closely spaced isobars indicate a strong gradient and stronger winds, while widely spaced isobars indicate a weaker gradient and lighter winds. Near the surface, friction reduces wind relative to the gradient alone, but the overall tendency—stronger gradient leads to higher wind speeds—still holds.

A strong pressure gradient increases wind speed because the air is pushed from high to low pressure with greater force when the pressure changes more over a given distance. The wind speed responds to that driving pressure gradient: a steeper gradient means a larger gradient force per unit mass, so air accelerates more and winds are faster. In practical terms, closely spaced isobars indicate a strong gradient and stronger winds, while widely spaced isobars indicate a weaker gradient and lighter winds. Near the surface, friction reduces wind relative to the gradient alone, but the overall tendency—stronger gradient leads to higher wind speeds—still holds.