The recent weather in Brazil

From June 30th to July 3rd this year, the southern Brazilian states of da santa catarina, rio grande do sul and Paraná suffered? Bomb whirlwind? In this attack, 100 km/h to 120 km/h caused 12 deaths, more than 1000 people were forced to move to a safe area, and1900,000 people lost power. Then why did it appear? Bomb whirlwind? What is the weather like?

Really? Bomb whirlwind? It's not the weather. Vision? This is a common weather phenomenon, the frequency is similar to the general typhoon and hurricane, but it does not often appear on land. Like typhoons and hurricanes caused by tropical depression, they are also generated on the sea surface because of low pressure. The reason for the low air pressure is the rising temperature in some areas. However, this temperature rise mostly occurs in temperate zones, mainly in temperate waters around 60 latitudes. If the central air pressure drops by 24 millibars (hPa) or more within 24 hours, air will flow to the middle, and explosive rotation will occur under the drive of the earth's rotation. It mostly happens in winter, but it may also happen in summer.

Bomb whirlwind? Mainly distributed in four major regions: the northwest Pacific Ocean, that is, the waters near Japan; The southwest Pacific, that is, the waters of Australia and New Zealand; North Atlantic and South Atlantic. Brazil's southern states are located in the west of the South Atlantic, and June and July are also positive? Bomb whirlwind? High incidence in winter. Although? Cyclone bomb? Compared with tropical depression, the storm is smaller in scope and shorter in time, but it is still very destructive, mainly in infrastructure such as houses and communications, which will also cause large-scale precipitation in some areas and even cause floods and snowstorms. Frequent human activities and greenhouse gas emissions lead to global warming and climate anomalies. This anomaly may also aggravate the occurrence of various meteorological disasters and make things that should not have happened.

The main reason why cyclone bombs are prone to disasters is that they rarely appear on land. This is different from storms caused by tropical depression. For example, people are surprised by the storm in southern Brazil, because they have never encountered such a storm before. Their knowledge of storms is limited to TV reports of hurricanes in the Caribbean. Therefore, when the storm strikes, local civil defense departments and residents lack basic protective measures and coping methods, and they are often caught off guard. Many people's roofs have been blown away by the strong wind, and the cities and villages are basically a mess. This has brought new disasters to the local area, which has already suffered from the COVID-19 epidemic.

After the incident, Brazilian President Bolsonaro immediately appeased and said that the power supply in the affected areas would be restored soon. At the same time, he himself visited the affected area afterwards.

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