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Good afternoon everyone!!!
Today we are talking about natural disasters. A natural disaster is a major adverse event resulting from natural processes of the Earth; examples are floods, hurricanes, tornadoes, volcanic eruptions, earthquakes, tsunamis, storms, and other geologic processes.
One major problem is the bushfire in Australia. Dozens of fires erupted in New South Wales, Australia, prompting the government to declare a state of emergency in November 2019. Fires rapidly spread across all states to become some of the most devastating on record. An area about the size of South Korea, roughly 25.5 million acres, has burned. At least 33 people are dead, including at least three volunteer firefighters, and more are missing. Around 3,000 homes have been destroyed or damaged.In mid-December 2019, a NASA analysis revealed that since 1 August, the New South Wales and Queensland bushfires had emitted 250 million tonnes (280 million short tons) of carbon dioxide (CO2).As of 2 January 2020, NASA estimated that 306 million tonnes (337 million short tons) of CO2 had been emitted. By comparison, in 2018, Australia's total carbon emissions were equivalent to 535 million tonnes (590 million short tons) of CO2. While the carbon emitted by the fires would normally be reabsorbed by forest regrowth, this would take decades and might not happen at all if prolonged drought has damaged the ability of forests to fully regrow.
In December 2019, the air quality index (AQI) around Rozelle, a west suburb of Sydney, hit 2,552 or more than 12 times the hazardous level of 200. The level of fine particle matters, known and measured globally as PM2.5, around Sydney was also measured at 734 micrograms (0.01133 gr) or the equivalent of 37 cigarettes.On 1 January 2020, the AQI around Monash, a suburb of Canberra, was measured at 4,650, or more than 23 times hazardous level and peaked at 7,700.