Hurricanes

The meteorology is an important complement of Physics that tries to explain and predict the atmospheric phenomena. In spite of knowing the behavior and the origin of the phenomena, it is impossible to have a prediction reliability beyond 24 hours.

One of the most mentioned  phenomena in the last years are the hurricanes, due to the fact that are more virulent, stimulated by the climate change.

But, how do hurricanes form?

They started as storms (low pressure zones that acting with hot water oceans, increase the temperature of the surface of the water). It begins the evaporation (elevation of the warm air), whereas the surface of the ocean lowers the pressure.  The evaporated water, on having entered in touch with the cold air mass, forms the clouds (Cumunolimbus). The column of low pressure forms winds in a spiral, until it is weakening and forms a zone of scanty winds, being named an eye of the hurricane. In the surroundings of this one, the winds are accelerated.

Finally, the duration of this phenomenon is uncertain, it depends on two important factors: hot waters (> 26ºC) and high humidity.

But, how to identify the different types of hurricanes, as well as the effects?

From the beginning as disturbance, up to the evolution as a hurricane, it has different stages. The last of them is when the winds overcome 119 Km/h

How can we classify the hurricanes?

It has been classified into five categories according to the wounds speed by the Saffir Simpson's scale.

Information with the hurricanes´ types:

Category I	Category II	Category III	Category IV	Category V
119 - 153 Km/h	154 – 177 Km/h	178– 209 Km/h	210 – 249 Km/h	Superior to250  Km/h

Once the category is known, the hurricanes and tropical storms are baptized with the saints' names in alphabetical order. For the last 50 years, it was alternated the feminine and masculine one to identify, record and study it.

The effects are demonstrated by high winds, torrential rains and the increase of water levels. These provoke devastating effects in the coastline zones, due to the fact that the cyclones arrive with all the acquired strength at the ocean.

At present it has been observed that the number of hurricanes with four or a superior category are much frequent due to the climate change (the ocean temperature has increased in some tenths, being sufficient to alter the meteorological cycle).

Already we know how affects the temperature in the formation of the hurricanes, being difficult to predict it, and impossible to motorize beyond twenty-four hours.

Bibliography:

https://bit.ly/2QJb842