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In the northern (southern) hemisphere, there is a large vortex in which the horizontal air flow in the atmosphere rotates counterclockwise. At the same altitude, the pressure at the center of the cyclone is lower than around it, also known as low pressure. Cyclones are approximately circular or oval in shape and vary greatly in size. The horizontal scale of small cyclones is several hundred kilometers, and large ones can be reached.
Three, four thousand kilometers. Cyclones, in which the weather often changes drastically, are the weather systems that people are most concerned about and the first to study. It is usually classified by the main area or thermal structure of cyclone formation and activity.
According to the region, it can be divided into extratropical cyclones, tropical cyclones and polar cyclonic vortices. According to the thermal structure, it can be divided into cold cyclone and thermal low pressure.
There are a variety of large and small vortices in the atmosphere, some of them rotate counterclockwise, some rotate clockwise, and the large horizontal vortices are called cyclones and anticyclones respectively, that is, low pressure and high pressure.
Cyclone: A cyclone with low pressure. A large vortex that occupies a three-dimensional space at the same height (isobaric surface) has a closed isobaric (high) line and a central air pressure (height) lower than the surrounding one. In the Northern Hemisphere, the air rotates counterclockwise; In the Southern Hemisphere, the direction of rotation is reversed.
Anticyclone: An anticyclone is also known as high atmospheric pressure. Cyclones and anticyclones are two sides of a system.
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When the pressure in the center of the cyclone is low, the surrounding air is replenished, and there is rain;
The air pressure in the center of the anticyclone is high, the air moves around, and clouds cannot form in the center of the anticyclone, so there is no rain.
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Cyclone: Low air pressure near the ground center.
The air flow flows from the vortex around to the center (counterclockwise in the Northern Hemisphere, Southern Hemisphere).
Shun Shi Kai quarrels needle).In this way, the air pressure in the center is chaotic and rising, and the airflow rises in the vertical direction, which is easy to form precipitation.
Cyclone (converging movement of air currents in the horizontal direction and rising air flow in the vertical direction) Anticyclone: The pressure near the surface center is high, and the air flow diverges from the center to the periphery (clockwise in the northern hemisphere, counterclockwise in the southern hemisphere).This causes the central pressure to drop, the air flow to sink vertically, and the weather to be clear.
Anticyclone (divergence of air currents in the horizontal direction, sluggish movement in the vertical direction).
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Explanation of cyclone [cyclone].
A storm or air flow system that revolves around a low pressure center.
Word Decomposition Explanation of Qi Qi (气) ì An object that does not have a definite shape, volume, and can be freely dispersed: gas. Breathe:
It's out of gas. Syncope. Gasp.
Breath. Coherent. Cold, ambiguous, cloudy, sunny and other phenomena in nature:
Climate. Temperature. Meteorology.
Smell in the nose: Smell . Stench.
The state of mind of man : the explanation of the cyclone Rotation á Rotation: Spiral Winding.
Revolve. Whirling dance. Spiral staircase.
Melody. Circling and calling. The heavens are spinning in a closed circle.
Return, return: Triumph. Soon:
Spiral heel (a metaphor for a very short period of time, as in "the spin is fleeting"). Immediately. Indicates that it has dealings with or between various parties
Deal with. Mediate. Ancient with "whirlpool", whirlpool. Surname.
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The front is the interface formed by the meeting of air currents with different cold and warm properties, and it is a narrow and inclined transition zone. A cyclone is a depression that, in the Northern Hemisphere, is a weather system in which air flows counterclockwise from the periphery to the center.
Frontal cyclones generally occur where the isobars are irregular ovals. The easterly southerly wind of the Northern Hemisphere cyclone comes from lower latitudes and has higher temperatures, and as it moves north, it encounters cold air at higher latitudes to form a warm front. Similarly, the western airflow of a cyclonic is a northerly wind in the northern high latitudes, and the southward movement will encounter warm air at lower latitudes and form a cold front, so that a frontal cyclone in the surface weather system is formed.
A cyclone in the Northern Hemisphere is a vortex that flows in a counterclockwise direction, and it also moves counterclockwise with the formed front.
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Cyclones and anticyclones are a form of atmospheric motion. A cyclone is a low-pressure system, and a high-pressure system is an anticyclonic system, which rises in a counterclockwise convergence and diverges downward in a clockwise direction in the Northern Hemisphere.
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An anticyclone is a horizontal air vortex in which the central pressure is higher than the surrounding pressure, and it is also the high pressure in the air pressure system.
Cyclones are approximately circular or oval in shape and vary greatly in size. The horizontal scale of small cyclones is several hundred kilometers, and large ones can be reached.
Three, four thousand kilometers. The vertical airflow of the cyclone is upward, and it is mostly rainy and cloudy. Typhoons that affect the southeast coastal areas of China in summer and autumn are a type of cyclone.
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A cyclone is a large vortex that rotates in an anti-clockwise direction in the northern (southern) hemisphere in the atmospheric field, and behaves as a low pressure in the pressure field.
On the isobaric map, it appears as a low pressure area surrounded by a closed isobar, and on the isobaric map, it appears as a low area surrounded by a closed contour line.
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To put it simply, a cyclone is a large vortex of air in which the air flow in the atmosphere rotates, counterclockwise in the northern hemisphere and clockwise in the southern hemisphere. The air pressure at the center of the cyclone is lower than around it, also known as low pressure.
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