Question

Difference between geostrophic wind and gradient wind

Answer 1

1.Winds tend to move parallel to isobars and pressure gradient under the influence of Coriolis force. When isobars are straight, there is less friction and winds tends to move faster, such winds are called geostrophic winds.

2.But practically, isobars are rarely straight and are normally bend. When isobars bend, there is a third force which adds apart from pressure gradient and Coriolis force, centrifugal force gets added up. This makes the winds to move slower and geostrophic nature becomes less dominant.

3.As the wind parcel moves north of equator, it moves slightly away from the center, centrifugal force decreases. The pressure gradient force becomes slightly more dominant and the wind parcel moves back to the original radius. This allows the gradient wind to blow parallel to the isobars.

4.In a low pressure system or trough, the gradient winds move at a speed less than geostrophic winds and in a high pressure system or ridges, gradient winds move at a speed higher than geostrophic winds.

Answer 2

Answer:

Difference between geostrophic wind and gradient wind

• Winds will in general move parallel to isobars and weight inclination affected by Coriolis power. At the point when isobars are straight, there is less grating and winds will in general move quicker, such breezes are called geostropic winds.

• Be that as it may, for all intents and purposes, isobars are infrequently straight and are regularly twist. At the point when isobars twist, there is a third power which includes separated from pressure inclination and Coriolis power, diffusive power gets included. This causes the breezes to move more slow to and geostropic nature turns out to be less prevailing.

• As the breeze package moves north of equator, it moves somewhat away from the middle, diffusive power diminishes. The weight angle power turns out to be somewhat progressively predominant and the breeze package moves back to the first range. This permits the inclination wind to blow parallel to the isobars.

• In a low weight framework or trough, the slope twists move at a speed not exactly geostropic twists and in a high weight framework or edges, inclination twists move at a speed higher than geostropic winds.