What is the meaning of equatorial trough?
What is the meaning of equatorial trough?
The quasi-continuous belt of low pressure lying between the subtropical high pressure belts of the Northern and Southern Hemispheres. This entire region is one of very homogeneous air, probably the most ideally barotropic region of the atmosphere.
What is the equatorial low?
Near the equator the sea level pressure is low and the area is known as equatorial low. Along 30° N and 30° S are found the high-pressure areas known as the subtropical highs. Further pole wards along 60° N and 60° S, the low-pressure belts are termed as the sub polar lows.
What is the meaning of monsoon trough?
The monsoon trough is a portion of the Intertropical Convergence Zone in the Western Pacific, as depicted by a line on a weather map showing the locations of minimum sea level pressure, and as such, is a convergence zone between the wind patterns of the southern and northern hemispheres.
What are equatorial westerlies?
Quick Reference. The westerly winds that sometimes develop within the equatorial trough when the Intertropical Convergence Zone is well north or south of the Equator. The north-easterly or south-easterly trade winds cross the Equator and, because of the reversal of the Coriolis effect, acquire a westerly component.
Why is the sea pressure low at the equator?
Equatorial regions is hotter and the air above expands, becomes less dense and rises. This produces a low pressure belt at this latitude.
Why is there low pressure at 60 degrees?
In the Subpolar region around latitudes 60° to 65° North and South of the Equator, the rotation of the earth pushes up the bulk of the air towards the Equator, creating a low-pressure belt in this region. This low-pressure belt extends from 0 to 5° North and South of Equator.
What is the role of monsoon trough?
Since the monsoon trough is an area of convergence in the wind pattern, and an elongated area of low pressure at the surface, the trough focuses low level moisture and is defined by one or more elongated bands of thunderstorms when viewing satellite imagery.
Why does the monsoon trough move?
With the advance of the monsoon this heat low gradually extends eastwards until it forms an elongated low-pressure zone running parallel to the Himalayan mountains in a west to east direction. This monsoon trough shows periodical movements to the north and south of its normal position.
How is equatorial westerlies formed?
The westerly winds that sometimes develop within the equatorial trough when the Intertropical Convergence Zone is well north or south of the Equator. The north-easterly or south-easterly trade winds cross the Equator and, because of the reversal of the Coriolis effect, acquire a westerly component.
What is the full form of ITC Z?
The Intertropical Convergence Zone, or ITCZ, is the region that circles the Earth, near the equator, where the trade winds of the Northern and Southern Hemispheres come together.
Is Latitude related to air pressure?
Atmospheric pressure is dependent on two things, water content and temperature. As temperature goes up pressure goes up. Therefore as your latitude increases the pressure drops. This drop in pressure also results in a drop in the heights of the different levels of the atmosphere.
Is there low pressure at the equator?
Low pressure bands are found at the equator and 50°-60° N/S. Usually, fair and dry/hot weather is associated with high pressure, with rainy and stormy weather associated with low pressure.
What is the meaning of the term equatorial trough?
equatorial trough. noun. the quasi-continuous belt of low atmospheric pressure that lies between the subtropical high-pressure belts of the Northern and Southern hemispheres.
What does a trough mean in nautical terms?
A trough is a low area between two big waves on the sea. The boat rolled heavily in the troughs between the waves.
What is the plural form of the word trough?
Word forms: plural troughs. 1. countable noun. A trough is a long narrow container from which farm animals drink or eat. The old stone cattle trough still sits by the main entrance.
What does a trough mean on a farm?
A trough is a long narrow container from which farm animals drink or eat. The old stone cattle trough still sits by the main entrance. A trough is a low area between two big waves on the sea.