convergence and divergence, in meteorology, the accumulation or drawing apart of air, as well as the rate at which each takes place. … The convergence of horizontal winds causes air to rise, whereas the divergence of horizontal winds causes downward motion of the air (subsidence).
What is convergence in ICT? .

What does divergence mean in weather?

METEOROLOGIST JEFF HABY. Divergence occurs when a stronger wind moves away from a weaker wind or when air streams move in opposite directions. When divergence occurs in the upper levels of the atmosphere it leads to rising air.

What is a convergence in weather?

A convergence line is a band of cloud that remains fairly stationary and can produce large amounts of rain across a relatively small area. This forces the air upwards, and if there is enough moisture, clouds form and give rain. …

What is divergence in geography?

A BROAD AREA WHERE two tectonic plates are colliding is a zone of convergence. An area where plates are moving apart is a zone of divergence.

What causes air convergence?

At the surface, low pressure systems have a counterclockwise rotation in the Northern Hemisphere, with the wind turning slightly inward towards the lowest pressure. This causes air to converge, or come together, at the center of the low near the ground. Since the converging air has nowhere else to go, it rises.

What is convergence?

Definition of convergence 1 : the act of converging and especially moving toward union or uniformity the convergence of the three rivers especially : coordinated movement of the two eyes so that the image of a single point is formed on corresponding retinal areas. 2 : the state or property of being convergent.

What is Convergent winds?

The terms are usually used to refer specifically to the horizontal inflow (convergence) or outflow (divergence) of air. The convergence of horizontal winds causes air to rise, whereas the divergence of horizontal winds causes downward motion of the air (subsidence).

What is a Convectional rainfall?

Convectional rainfall When the land warms up, it heats the air above it. … As the air rises it cools and condenses. If this process continues then rain will fall. This type of rainfall is very common in tropical areas but also in areas such as South East England during warm sunny spells.

How does convergence form clouds?

Large scale convergence lifts a layer of air (sometimes hundreds of kilometers across), the air cooling as it rises. If the rising air cools to its saturation point, the water vapor will condense out to form cloud droplets. … Cirrostratus clouds is one cloud type that develops from convergence lifting.

Where are convergence zones?

The location of the Inter-Tropical Convergence Zone is usually readily seen as a line of cumulus clouds in the tropics. This is the location where northeast winds in the Northern Hemisphere converge with the southeast winds from the Southern Hemisphere.

What is an example of divergence?

An example of divergence is the development of wings in bats from the same bones that form the arm and hand or paw in most other mammals. … An example of divergence is when a couple split up and move away from one another. An example of divergence is when a teenager becomes an adult.

What is convergence in earth science?

A convergent boundary (also known as a destructive boundary) is an area on Earth where two or more lithospheric plates collide. One plate eventually slides beneath the other, a process known as subduction. … Subduction begins when this dense crust converges with less dense crust.

What is convergence in physics?

Convergence is the physical joining together of light rays. Light rays tend to come together at a point (called point of convergence) from different directions.

What is horizontal divergence?

A measure of the local spreading or divergence of a vector field in a horizontal plane, commonly written ∇H · V. The horizontal divergence of the velocity field is related to the vertical motion and local pressure variations through the equation of continuity and equations of motion. …

What causes divergence aloft?

Divergence aloft is associated with rising air throughout the troposphere, which is associated with low pressure and convergence at the surface. Convergence aloft is associated with sinking air throughout the troposphere, which is associated with high pressure at the surface and thus divergence at the surface.

What is speed divergence?

speed divergence occurs when winds are speeding up along the direction of flow. Directional divergence occurs when air streams are flowing apart. divergence in the upper atmosphere should indicate areas of rising air.

What is convergence with example?

The definition of convergence refers to two or more things coming together, joining together or evolving into one. An example of convergence is when a crowd of people all move together into a unified group.

What is convergence and its types?

Types of Media Convergence Media convergence is an umbrella term that can be defined in the context of technological, industrial, social, textual, and political terms. The three main types of Media Convergence are: Technological Convergence. Economic Convergence.

What is divergence in communication?

Divergence. Divergence is a strategy used to accentuate the verbal and nonverbal differences between communicators, or in other words, a nonaccommodation. Different from convergence in that there are no attempts to display similarities in gestures, posture, speech rate, etc. between speakers.

What is a lift in weather?

Frontal lifting is when air is lifted along fronts, which is where two different air masses meet. Like jumping into a cold lake and shocking your system, a cold front shocks warm air upward very quickly.

Where is wind convergence common?

The Intertropical Convergence Zone (ITCZ, pronounced “itch”), known by sailors as the doldrums or the calms because of its monotonous windless weather, is the area where the northeast and the southeast trade winds converge. It encircles Earth near the thermal equator though its specific position varies seasonally.

What is low level convergence?

Convergence is air streams flowing into one another or stronger wind moving into weaker wind. When air piles together in the low levels of the atmosphere it has no place to go but up (it obviously can not go through the earth’s surface).

How is weather different from climate?

Weather refers to short term atmospheric conditions while climate is the weather of a specific region averaged over a long period of time. Climate change refers to long-term changes.

Does clouds give convectional rainfall?

Cumulus clouds give convectional rainfall.

How is convergence rainfall formed?

As these winds converge, moist air is forced upward, forming one portion of the Hadley cell. The air cools and rises (see image below), causing water vapor to be “squeezed” out as rain, resulting in a band of heavy precipitation around the globe.

What are divergent boundaries?

A divergent boundary occurs when two tectonic plates move away from each other. Along these boundaries, earthquakes are common and magma (molten rock) rises from the Earth’s mantle to the surface, solidifying to create new oceanic crust. The Mid-Atlantic Ridge is an example of divergent plate boundaries.

What is frontal rainfall?

Frontal rain occurs when two air masses meet. … Instead, the warm less dense air is pushed up over the cold dense air creating the ‘front’. As a result, much like when air is forced up over mountains, the warm less dense air cools, and the water vapour condenses into water and falls as raindrops.

What is relief rainfall?

Relief rainfall occurs when warm moist air from the Atlantic Ocean rises up over mountains. When the warm air rises, it cools and condenses to form clouds, which bring rain. Once the air has passed over the mountains, it descends and warms.

Why is Itcz north of equator?

The ITCZ has a mean position north of the equator because there is much more landmass in the Northern Hemisphere as compared to the Southern Hemisphere. Look at a globe and notice how much more land there is in the tropics in the Northern Hemisphere. … This produces a convergence of air over the land.

What exactly is divergence?

Divergence measures the change in density of a fluid flowing according to a given vector field.

What do you mean by divergence?

The point where two things split off from each other is called a divergence. When you’re walking in the woods and face a divergence in the path, you have to make a choice about which way to go. A divergence doesn’t have to be a physical split — it can also be a philosophical division.

How do you explain divergence?

Divergence (div) is “flux density”—the amount of flux entering or leaving a point. Think of it as the rate of flux expansion (positive divergence) or flux contraction (negative divergence). If you measure flux in bananas (and c’mon, who doesn’t?), a positive divergence means your location is a source of bananas.

What is convergent in geography?

[ kən-vûr′jənt ] A tectonic boundary where two plates are moving toward each other. If the two plates are of equal density, they usually push up against each other, forming a mountain chain.

What causes divergence of plates?

Divergent boundaries occur along spreading centers where plates are moving apart and new crust is created by magma pushing up from the mantle. Picture two giant conveyor belts, facing each other but slowly moving in opposite directions as they transport newly formed oceanic crust away from the ridge crest.

What is divergence and convergence of light?

Post In physics, when a light rays starting from a point diverge themselves or spread themselves, such a ray is called divergent ray. On the other hand when light from a large source converge or focuses itself,such a ray is called convergent ray. In lenses convex lenses converge rays and concave lenses diverge it.

What is divergence and convergence mirror?

Convergence and divergence of mirrors If reflected rays converge to a single point after reflection, then this is called as converging behaviour of the mirror . … If reflected rays appear to diverge from a single point, then this is called as diverging behaviour of the mirror .

Are mirrors converging or diverging?

Convex mirror is also a type of spherical mirror whose inner surface is silvered while the outer surface acts as a reflecting surface. It diverges a beam of light traveling parallel to the principal axis after reflecting through it. Thus a converging mirror is a concave mirror.

What is mass convergence?

Mass convergence is found in areas where winds come together. … As winds come together, mass builds up and therefore causes air to rise, creating an updraft. Convergence may occur due to topography or daytime heating, and can be especially strong along fronts and dry lines.

What happens when the upper level divergence of air is greater than the lower level convergence of air in a storm?

When upper-level divergence is stronger than lower- level convergence, more air is taken out at the top than is brought in at the bottom. Surface pressure drops, and the low intensifies, or “deepens.”