meteorology It is a science that has a lot to do with our lives, but it is difficult to understand. It is logical that we do not need to understand the physical knowledge underlying changes in the atmosphere. That’s what meteorologists are there for. But it’s interesting that when people talk to us, we moderately understand what they are saying. This is difficult, not because they are poorly explained, but because the list is very long meteorological terms. However, things become much simpler when we realize that some of these terms are used to mean the same thing.
There are pairs of meteorological terms that refer to the same thing. They are sometimes used in different parts of the world. Is case of hurricane and typhoon. Others have simply evolved over time, e.g. DANA and cold drop.
In this article we will see some pairs of meteorological terms they mean the same thing, so when we hear or read about them, we clearly understand what they refer to.
Typhoon and hurricane: the most exotic pair of meteorological terms
And typhoons and hurricanes These are tropical cyclones. This happens when low pressure zone in the atmosphere for tropical watersand the air revolves quickly around it. The energy of these phenomena is obtained from evaporation water. That is, water turns into gas, heat is released, which gives energy to a tropical cyclone. The higher the water temperature, the more steam is produced. Therefore, it is said that warm tropical waters are the fuel for such activities. The more fuel, the stronger the wind blows.
Air that rotates around a low pressure area usually does so in a closed manner. If it’s open, then it’s tropical disturbance. On the other hand, if it is closed, its name depends on the wind speed. If the surface speed does not exceed 61 kilometers per hour, this is tropical depression. Exceeding this limit becomes tropical stormbut if it continues to grow to 119 km/h or more, then we are already talking about a hurricane or typhoon.
These two meteorological terms are exactly the same. The difference is that when this phenomenon occurs in the Atlantic or eastern Pacific Ocean, it is called hurricanebut in the Western Pacific it is considered typhoon. Nomenclature and geography. Otherwise everything is exactly the same.
DANA or cold drop? That’s the question
The term DANA seems to us something very new and exotic, but in fact they have always been in Spain. Its name refers to the abbreviation “Isolated depression at a high level” and corresponds to the air mass released from the cold air currents of the upper layers. When hot air settles below a mass, disturbances are formed that cause wind and precipitation, especially if there is sufficient water vapor in the environment.
Previously, this phenomenon was called cold fall. However, it is now believed that it is more correct to talk about DANA, since cold drop It can be a broader term, sometimes including other phenomena.
Moreover, it had a very negative connotation, which caused great social anxiety. This did not happen with DANA, although after what happened in Valencia, both meteorological terms are of great concern to a large part of the population.
From storm to cyclone
Before we saw that a tropical cyclone is low pressure zone with air rotating around it, which forms over tropical waters. If we do not take into account the water on which it forms, we simply call it a cyclone. And, on the other hand, a storm is a type of cyclone. Often the term cyclone is associated with something more stormy, and a storm with something calmer, but in fact only an anticyclone is calm.
Explosive cyclogenesis and bombogenesis: meteorological terms that explode
We have already seen what a cyclone is. When this is generated, we have cyclogenesis. This is evidenced by its own name. But when can we say it is explosive? It actually refers to speed. If a cyclone forms very quicklyWe have explosive cyclogenesis. These numbers are located in such a way that we can talk about explosive cyclogenesis if the pressure decreases by at least 24 hPa in 24 hours. However, if cyclogenesis occurs at lower latitudes, this figure is 18-20 hPa in 24 hours.
As for bombogenesis, everything is exactly the same. Bombs are explosive. That is why a second name and different meteorological terms were given to describe the same phenomenon.
Source: Hiper Textual
