What is the air movement that occurs at night called?
When the wind blows over the rough Earth’s surface, it creates turbulent swirls of air called eddies. At night, invisible eddies mix colder air in contact with the cooling ground upward, while also circulating slightly warmer air toward the ground from higher up.
What causes air to move in a certain direction?
The pressure gradient causes the air to move horizontally, forcing the air directly from a region of high pressure to a region of low pressure. The Coriolis force, however, deflects the direction of the flow of the air (to the right in the Northern Hemisphere) and causes the air to flow parallel to the isobars.
What is the sideways movement of air?
Wind is defined as the perceptible natural movement of the air, especially in the form of a current of air blowing from a particular direction whereas breeze is the gentle wind.
What is a nocturnal inversion?
Nocturnal Inversion Used interchangably with Radiational Inversion; a temperature inversion that develops during the night as a result of radiational cooling of the surface.
Why does air flow downhill at night?
It occurs at night, when the highlands radiate heat and are cooled. The air in contact with these highlands is thus also cooled, and it becomes denser than the air at the same elevation but away from the slope; it therefore begins to flow downhill.
What are types of wind?
This classification is based on the periodicity of occurrence and location of occurrence.
- Primary Wind or Planetary Wind.
- Secondary Wind or Periodic Wind.
- Tertiary Wind or Local Wind.
- Trade Winds.
- The Westerlies.
- Polar Easterlies.
- Monsoon Winds.
- Land Breeze and Sea Breeze.
How do you describe the flow of wind during night time at the seashore?
land breeze, a local wind system characterized by a flow from land to water late at night. Land breezes alternate with sea breezes along coastlines adjacent to large bodies of water.
What causes vertical motion of air?
Air movement in the atmosphere is basically caused by differences of density in air parcels. Warmer air is less dense than cooler air, so it rises.
What is Advective inversion?
[ad′vek·shən·əl in′vər·zhən] (meteorology) An inverted temperature gradient in the air resulting from a horizontal inflow of colder air into an area.
What is the turbulence inversion?
A turbulence inversion is created when a layer of calm air lies above turbulent air. As the turbulent layer brings warm air down and cools its upper part through what’s called vertical mixing, the layer of calm air above eventually ends up being warmer, thus causing an inversion.
What does katabatic mean?
Definition of katabatic : relating to or being a wind produced by the flow of cold dense air down a slope (as of a mountain or glacier) in an area subject to radiational cooling.