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Q: How does horizontal convergence and divergence affect surface pressure?
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Are Surface cyclones accompanied by divergence aloft?

Depends, convergence would be a cyclone and divergence and anti cyclone The link below has more information.


What is the net inward movement of air in a surface low pressure system that causes the air mass to shrink?

The effect is called horizontal convergence.


What happens to earth's surface when horizontal pressure is applied to rocks?

When a horizontal pressure is applied to rocks, the earth's surface will form lines that are perpendicular to the direction of the pressure. This can be compared to folds in a wrinkled rug lying on a floor.


What happens to Earth surface when horizontal pressure is applied to rocks?

When a horizontal pressure is applied to rocks, the earth's surface will form lines that are perpendicular to the direction of the pressure. This can be compared to folds in a wrinkled rug lying on a floor.


Why upper-level divergence leads to surface cyclogenesis?

Divergence at mid- and upper levels facilitates the evacuation of air from the top of the developing low pressure system, which is what is required for air to continue to rise and therefore lower the pressure further.


What is convergence in tornadoes?

I meteorology, the scientific study of weather, convergence is wheere wind comes together in an are from the surroundings. When this happens at ground level, the air is forced to rise. This is related to tornadoes in two ways. Convergence on the large and medium-sized scales of weather can lead to the formation of thunderstorms. Under the right conditions, these thunderstorms may spawn tornadoes. Second, air converges inside a tornado, as the intense low pressure draws it inward.


Does divergence help to maintain surface lows?

yes


Can thunderstorms occur in areas of surface convergence?

Yes. Convergence is one of the things forecasters look for in trying to predict thunderstorms.


What makes the equatorial divergence regions biologically productive?

Biologically a very productive region of the ocean. At the equator, there is divergence of surface water because the net Ekman transpor.


In what direction is the polarization of the glare that reflects from a horizontal surface?

It is polarized at 90 degrees to the plane of incidence. If the surface is horizontal, the plane of incidence is vertical & the polarization would be horizontal.


What surface is 90 degrees to a horizontal surface?

Perpendicular


Why a vertical datum is alevel surface not a horizontal surface?

because the datum surface is perpendicular tothe direction of gravity at any point on it.but the horizontal surface is perpendicular to vertical at one point on it :D