What causes a heat wave? | 2021


Heat wave is an unusually hot weather phenomenon in which a certain area has high temperatures and high humidity that can last for several days. During this period, the normal temperatures of the area are many times higher than the usual temperatures of the corresponding season. The heat wave poses a number of threats to the inhabitants of a particular area and, if prolonged, can lead to many deaths and serious illnesses. The heat wave can be relatively dependent on where you live. For some, certain normal temperatures can be viewed as a heat wave for a person coming from a low temperature range.

What causes a heat wave?

A heat wave occurs when the upper atmosphere contains high pressure which makes it stationary in an area. This stationary air mass can stand for days and weeks, retaining more heat and reducing convection currents. As a result, heat and high humidity are accumulated without any precipitation or precipitation. This creates unusually high temperatures. Heat waves are quite common in the northern hemisphere during the summer season from May to November.

The high pressure forces the air to sink to the surface of the land and acts as a barrier to heat rise. This will cover the surface of the earth and record all weather conditions without them being able to escape.

Dangers of heat

The heat wave is potentially more dangerous than other natural events such as hurricanes, lightning and tornadoes. In addition to uncomfortably high temperatures, heat waves can lead to heat problems, poor air quality, forest fires and drought.

  • Extremely high temperatures are associated with heat outbreaks, heat stroke and heat cramps. If the outside temperature is higher than the inside body temperature, our body becomes susceptible to the aforementioned heat diseases. The body cannot regulate and maintain an optimal temperature in these conditions.
  • Pollutants and harmful chemicals trapped under the cover of hot air reduce the quality of the air we breathe and thus harm our health.
  • Fires and forest fires are common during a heat wave. This is because dried vegetation can easily catch fire, which spreads easily and affects the entire forest or vegetation cover.
  • Under these conditions, the infrastructure was also affected. High heat causes highways and roads to burst, cracks to appear, water pipes to burst and transformers to explode. This physical damage to critical infrastructure can delay service delivery and cost a lot of money to repair and replace.
  • Heat waves are also associated with high levels of psychological stress in humans, which affects performance and productivity. It is uncomfortable to live in excessive heat. This affects many factors in society, such as crime. Crime has been found to increase when temperatures are unusually high. In addition, there is an increase in interpersonal conflicts due to stress.
  • Finally

    The probability of a heat wave is very high due to global warming and climate change. Because global warming is destroying the ozone layer, which prevents harmful sun rays from reaching the earth’s surface. This increases the global average temperature and thus the starting point of the heat wave.



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