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[Free* (not thematic, sorry for confusion) Report] Australian Bushfires

by Seojin Lee | 31-01-2021 15:30


Australia is one of the biggest countries in the world, and is located between the Indian Ocean and the South Pacific Ocean. Australia is known for many things, from its large cities to its natural wonders. However, Australia is also known for its bushfires. These bushfires happen all over the country, and are more likely to happen depending on the specific time of the year. Bushfires are not only dangerous for people nearby, but it is also a huge threat to Australian forests and its environment.

Australia can be divided into four areas where the temperature works differently. These four areas are Southeast Australia, New South Wales and southern Queensland, Northwest Western Australia and the Northern Territory, and Southern Western Australia. In Southeast Australia, bushfires are more likely to happen in summer and autumn. In New South Wales and southern Queensland, bushfires are more likely to happen in spring to the middle of summer. In Northwest Western Australia and the Northern Territory, bushfires are more likely to happen in winter and spring. Finally, in Southern Western Australia, bushfires are more likely to happen in spring and summer.

The reason why bushfires are more likely to happen in a certain season in an area of Australia is due to the weather and the climate. The humidity, strength of the wind, rainfall, lightning, and temperature inversions are all factors in how bushfires form and are spread across the area. Humidity is the relative amount of water moisture to the air. If the humidity is lower, then vegetation becomes more flammable. The strength of the wind changes depending on the climate and time of the year; the stronger the wind, the more easily fires are spread throughout the area. The amount of rainfall also depends on the climate. Less rainfall with less humidity is a combination that is common in bushfire seasons. Lightning is also a factor, as the amount of lightning changes depending on the climate and may also ignite the bushfires. Finally, temperature inversions are when a layer of strong wind sits on top of a layer of cool wind, causing the strong wind to blow at higher elevations. However, depending on the climate, temperature inversions happen less often and as this stable structure is broken, the strong winds are able to travel in lower elevations and become another factor in spreading bushfires.

The causes of bushfires mentioned above are all natural causes. However, these bushfires are happening much more often all throughout Australia due to climate change. Weather patterns are becoming more extreme, and bushfire seasons in some areas of Australia are starting earlier than they should be. It is clear that the increased frequency of Australian bushfires is just one out of the many harmful products of man-induced climate change in the earth. 


Sources:

1: http://www.bom.gov.au/weather-services/fire-weather-centre/bushfire-weather/index.shtml#:~:text=Southeast%20Australia%E2%80%94summer%20and%20autumn,hot%20days%20with%20strong%20winds.