How long has the Australian mountain fire burned?

20 19, 1 1 year 10, a jungle fire raged in eastern Australia, and the disaster situation became more and more serious. By midnight on the 9th, the fire had killed at least three people, injured more than 30 people, burned down 150 houses and forced thousands of residents to flee their homes. In addition, about 350 koalas in the local reserve were also killed in the fire.

20 19 12 3 1 severe mountain fires occurred in New South Wales, Victoria and South Australia in southeastern Australia, with an area of over 6 million hectares. More than 20 people were killed, more than 2,000 houses were destroyed and thousands of local people were forced to leave their homes.

In the mountain fire crisis that lasted for several months, smoke has drifted to New Zealand, which is 2000 kilometers away from it, resulting in a decline in air quality in New Zealand and even smog.

On June 8, 2020, at least 25 people died and more than 2,000 houses were burned down. According to the Brazilian Meteorological Company, the smoke from the fire has now drifted to the south of Brazil. The Ministry of Foreign Affairs of China expressed sincere condolences over the serious mountain fires in many places in Australia, which caused heavy casualties and property losses.

Australian Prime Minister Scott Morrison admitted that there was a mistake in handling the mountain fire crisis. He said that he would put forward a proposal to the cabinet to set up a royal committee to deal with the jungle fire disaster, and would also discuss how the federal government could intervene and assist the states to deal with the problem with greater flexibility when the disaster occurred.

In addition, due to the huge psychological trauma caused by the mountain fire, Morrison announced that he would invest 76 million Australian dollars (about 350 million yuan) to provide psychological counseling and comfort to the people.

On June 65438+1October 1 1 day, 2020, another firefighter died at the scene of a mountain fire in Australia. The number of victims in the mountain fire season in Australia rose to 28 this year, including 4 firefighters.

In Australia, some states and regions with high forest fires have launched special actions against arsonists. Since 20 19, 1 1, NSW authorities have warned or prosecuted 183 people about 200 crimes related to forest fires, some of which were intentional arson and some were negligence.

Among them, 24 people were accused of deliberately igniting forest fires, 53 people were prosecuted or warned for failing to comply with the comprehensive fire ban, and 47 people were accused of littering cigarette butts.

Around June 5438+1October 12, 2020, there were favorable weather such as rainfall, low temperature and no wind in Australia's mountain fire area, and the fire in New South Wales was weakened, but it did not fundamentally change the forest fire situation in NSW. In neighboring Victoria, forest fires are still increasing.

Thunderstorms occurred in Melbourne on June 5438+1October 15 and June 5438+06, 2020, which alleviated the local air pollution and changed the local air quality from "harmful" to "medium". However, the Victorian Fire Department said that Melbourne may be hit by smoke again at 18, because some fires in the eastern and northeastern Victoria are still out of control and the weather is changing.

Extended data

One of the reasons for frequent mountain fires is global climate change: in some areas, continuous high temperature, drought and windy weather are more likely to cause and spread forest fires. Moreover, forest fires release a lot of carbon dioxide, which is the main source of global greenhouse gas emissions [7], and further leads to global climate change-cycle, vicious cycle.

If a mountain fire breaks out again before the burned forest grassland is restored, leading to serious fires, the local tropical rain forest in Australia may be completely burned into savanna, which will have a far-reaching and inestimable impact on the global climate.

In the case of continuous fires in Australia, fires have had an impact on the local microclimate: fire cumulus clouds.

The heat of fire makes the air on the surface and the smoke produced by combustion soar, forming cumulus clouds in the sky. The continuous fire makes the fire cumulonimbus cloud "grow and develop" into "fire cumulonimbus cloud" and form rainfall.

Fire cumulus clouds often bring strong winds, making the fire more violent; Although it will bring rain, it usually falls in the position people expect; In addition, lightning caused by fire cumulonimbus clouds may hit trees in other places, thus generating more fire spots.

Baidu encyclopedia-Australian jungle fire