Why don t Australia s bushfires be extinguished by artificial rainfall?

The use of artificial rain to extinguish fires can only be said to be a drop in the bucket, it does not play any role at all, and the Australian bushfires have caused the entire Australian sky to be dark and the air is full of sulfur and some other substances, at this time, if artificial rain is carried out, it is likely that some other accidents will occur.

Because the conditions required for artificial rainfall are very harsh, not only specific weather conditions are required, but also the coordination of relevant departments is required, both of which are indispensable. At present, it is clear that the skies over Australia's forests do not meet these two conditions.

Most of the forest fires in Australia are caused by the surrounding environmental factors, and the cost of artificial rainfall is too high to be realistic.

Artificial rainfall also requires weather conditions, and the weather in Australia is relatively dry and cannot meet the conditions for artificial rainfall. Even if it is artificial rainfall, the rainfall is small, it will not extinguish the fire, and it will even cause more serious consequences.

Although rain can extinguish fires, artificial rain does require an environment that cannot be controlled by humans.

For example, there are cumulonimbus clouds in the sky, but the environment in Australia is relatively dry, and their sky is currently unlikely to have cumulonimbus clouds, so artificial rain cannot be used to extinguish the fire.

The fires in Australia were caused by dry weather, little rain, and some arson.

1. Forest fire refers to the forest fire behavior that is out of human control, spreads and expands freely in the forest land, and brings certain harm and loss to the forest, forest ecosystem and human beings. Forest fire is a natural disaster that is sudden, destructive, and difficult to deal with. It is a type of fire.

2. The cause needs conditions Three conditions must be met for the occurrence of forest fires:

Combustibles (including trees, grass and shrubs and other plants) are the material basis for forest fires;

Fire danger weather is an important condition for fires;

The source of fire is the leading factor in the occurrence of forest fires.

Without one of these three conditions, forest fires will not occur. A large number of facts show that forest fires can be prevented, combustibles and fire sources can be artificially controlled, and fire danger weather can also be predicted to prevent it.

Central Australia is controlled by the subtropical high pressure zone all year round, and the desert is formed by little rainfall, and because of the influence of the subtropical high pressure, the forests in the south are often affected by the dry, hot prevailing winds blowing from the north, causing forest fires.

Forest fires not only destroy surface vegetation and reduce biodiversity, but also pollute the air.

There should be a reason for this.

First of all, the environment of their place is that the climate is particularly dry.

And then somebody's got a fire, so the fire got bigger and bigger.

September-November 2019.

21 December 2019: Bushfires in East Gippsland, Victoria, are starting to affect the weather. The smoke turned into clouds, causing severe thunderstorms that led to further fires.

The fire broke out in September 2019, but the story dates back to 2017. Australian bushfires have been burning since September 2019. The prolonged drought that began in 2017 has made this year's bushfire season more catastrophic than ever.

Wildfires have caused unprecedented damage, affecting more than 14 million acres of land, killing more than 20 people and killing an estimated 1 billion animals.

A look back at the situation from the severe drought in September 2018 to today. September 2018: During a prolonged drought that began in 2017, eastern Australia experienced its driest September on record.

September 2019: Australian Bureau of Meteorology**, drought will continue for at least three months as bushfires occur.

The fire, which lasted for more than four months and has not stopped, has burned a large area of 6 million hectares and released more than 100 million tons of carbon dioxide, which is equivalent to 2 3 of Australia's average annual carbon dioxide emissions. According to scientists' measurements, breathing outside in Sydney is equivalent to smoking 35 cigarettes at the same time. Of course, Australia's unique environment is like being isolated from the rest of the world, and the smoke from burning does not seriously affect other countries.

There is not much dust left after it has crossed the ocean.

But the wildfires killed more than 500 million animals, including Australia's endemic marsupials such as kangaroos and koalas. Koalas, who had not drunk much water in their lives, took the initiative to ask the public for water after escaping from the fire. In fact, the biggest victims are all kinds of wild animals, which are not as strong as human escape skills, and suffer heavy casualties in the face of raging fire.

As for the impact on the earth's ecological environment, it is not very large, even if a large amount of carbon dioxide is released, but a large area of plants on the earth can easily eliminate it. The increase in temperature is also a short-term effect on a small regional scale, and it is not enough to cause changes in global temperatures. In fact, the earth's ability to heal itself is very strong, but the elimination of these effects and the restoration of vegetation will take at least a hundred years.

There are a lot fewer animals, there's a lot of pollution to the air, there's a lot of damage to homes in Australia, and people's lives are taking a big hit.

The prerequisite for artificial rainfall is that rain can fall, when a cloud with a lot of steam is rushed into the airWe can manipulate the duration and address of rainfall according to physicochemical means; Australia is currently in a very hot summer (December and February), drought rainfall is less, the vast majority of areas do not have artificial rainfall standards, and the forest fire is very serious, unless it is a long-term heavy rain, otherwise the general drizzle does not have any effect on slowing down the spread of fire.

Cold clouds to increase rain: apply physical and chemical methods to increase the number of ice crystals in the clouds, and then cause the effect of ice crystals, promote the landing of ice crystals, and achieve the actual effect of rainfall; For example, throwing ice, paraffin, silver iodide into the clouds. Warm clouds add rain:

According to the physical and chemical method, accelerate the impact and solidification of water droplets in warm clouds (clouds generated by water droplets higher than 0), so as to achieve the actual effect of rainfall; For example, the throwing of edible salt into the clouds and the new type of hygroscopic fireworks, such as the basic principle of artificial rainfall.

Whether it is cold clouds or warm clouds and rain, the conditions are that there are a lot of water vapor clouds in the air of the overall target rainfall place, and then human intervention in the rainfall address, if there are no cumulonimbus clouds in the sky, then artificial rainfall cannot be implemented. Forest fire refers to the forest fire disaster in which the loss of human factors manipulates the random spread and expansion of forest land, causing certain harm and loss to mountain forests, forest ecosystems and people. Forest fires are a kind of flood disaster that is sudden and devastating, and it is difficult to deal with and rescue.

There are forest fires all over the world.

Artificial rainfall is achieved under the premise of sufficiency: generally, the cause of rainfall must not only meet a certain macroeconomic temperature standard, but also meet the microphysical standard between clouds. For example:

There should be large water droplets between warm clouds above 0; There should be ice crystals between the cold clouds within 0, and there is no such standard, no matter how good the weather situation is, no matter how good the cloud conditions are, there will be no rainy days. But in the case of nature,Such microphysics standards are not always available; Sometimes, although it is available, it is not sufficient.

<> the use of rainfall to extinguish fires is a distant possibility. Here are some of the reasons:1

Costly: The use of rain to extinguish fires requires a large number of aircraft and equipment, which will lead to significant economic costs. 2.

Technical difficulty: The use of rainfall to extinguish fires requires highly precise techniques and equipment, including expertise in fields such as meteorology, physics, and geology. 3.

Environmental constraints: Rainfall firefighting may have adverse effects on the local environment, such as causing geological hazards or pollution. 4.

Inconclusive effect: What's more, rainfall may not be successful in extinguishing fires because it may not reach a wide enough area or dense enough precipitation to suppress a fire.

Because Australia does not have the conditions for artificial rainfall, its natural environmental factors are not suitable for artificial rainfall, and if it is forced, it will have the opposite consequences.

Because of the continuous high temperature, the high school does not reach a certain humidity, so there is no way to carry out artificial rainfall, and even if it can be successfully artificially rained, the wildfire is relatively large and difficult to extinguish.

The prerequisite for artificial rain is that the rain can fall, when a cloud with a lot of steam is rushed into the airWe can manipulate the duration and location of rainfall according to chemical and physical means; Australia is currently in a very hot summer (December and February), drought rainfall is less, the vast majority of areas do not have artificial rainfall standards, and the forest fire is very serious, unless it is a long-term pouring rain, otherwise the general drizzle can not slow down the spread of the fire.

For areas that are very prone to forest fires, the best way at this stage is to set up a forest fence in advance, when the popularity comes, the total area of the fire can be reduced to a minimum, which our country has done very well, even if there is a forest fire, the country will use a greater capacity to fight the fire. Australia's forest fires if artificial rainfall, it is unreasonable, because artificial rainfall is because the natural environment of rainfall and that overall goal is first, and then artificial rainfall is not to fall where you want to fall, forest fires artificial rainfall can not be extinguished at all.

It is not the same characteristic as crops, the rainfall of the crops in the drought can save the harvest and production of crops, and the forest fire occurs, and the precipitation of manpower cannot solve the fire. In addition, the mountains and forests where fire accidents occurred are not suitable for artificial rainfall. The reason why the mountain forest can not be solved by artificial rainfall is because in the forest fire, the temperature located around the ignition point is very high, along with the thermal convection effect of warm air, the water vapor composition on the fire site is generally not up to the standard of artificial rainfall, so the forest fire is not able to be dealt with by artificial rainfall.

What everyone can do is to prevent that there must be a suitable opportunity, he must be close to the situation of rainfall, and there is no rainy day, for example, the cloud is called thin, and it does not have the standard of rainy days, because he wants to scatter some dry ice rock powder, silver iodide and other metal catalysts into the sky, and then cause a lot of ice crystals, so that the relative density of his ice crystals expands, let the cloud rain or increase its rainfallIf there are too few clouds, even manual control is useless, not to mention the economic value of this thing.

The area of Australian forests is very large, and if artificial rainfall is used, it requires a high investment cost, and the effect of artificial rainfall is not particularly good, so it is not used. I think that although artificial rainfall is very good, it is very inappropriate for Australian forests, mainly because the Australian forests are really too big.

Mainly because the weather conditions at that time were not up to the conditions of artificial rainfall, and the fire was particularly large at that time, and it was difficult to extinguish artificial rainfall; However, I think that corresponding measures should be taken no matter what, and the fact that the fire has not been extinguished for four months shows that the relevant departments are still very lazy.

It may be because the artificial rainfall is too slow, and the forest fire is too big, and if you use a fire extinguisher, it will be faster.

It is because the terrain of this place is relatively complex, and the forest fire is actually relatively serious, and the effect of artificial rainfall is not particularly good.

Yes, bushfires can have a devastating impact on the country, directly impacting the Australian economy and other industries.

Yes, bushfires have severely affected Australia's environment, economy, and livestock industry, making their air pollution.

The forest fire has had a very serious impact on the country of Australia, because there is no river in the interior of Australia, and there is no way to carry out artificial rainfall where the forest is fired, and the fire almost burned the forest in Australia, which has a certain impact on the economic development of the country.

Summary. Dear, hello, according to your question in the Australian bushfires, which countries and social forces have assisted, through which ways, I will answer for you, there are the following countries and social forces have assisted: the United States, New Zealand.

In the United States, trees are cut down, combustibles are removed, and mineral soil is covered, so that the fire does not spread, whether it is front or back, left or right.

In the Australian bushfires, which countries and social forces have provided assistance, and in what ways.

In the Australian bushfires, which countries and social forces have provided assistance, and in what ways?

Dear, hello, according to your question in the Australian bushfires, which countries and social forces have assisted, through which ways, I will answer for you, there are the following countries and social forces have assisted: the United States, New Zealand. The United States used Changhao to cut down trees and imitate it, remove the lead combustion, and spread mineral soil, so that the fire would not spread regardless of the front and back.

Since September 2019, more than 5 million hectares of land have been burned in Australia, more than 20 people have been killed and dozens are missing, more than 1,400 dwelling houses have been burned, and nearly 500 million animals have died. The Australian Federation recently said that it would use military force to help deal with the disaster. Such as closed.

New Zealand sent 30 planes and *** to sprinkle water over the fires, and 350 water carriers were responsible for transporting water.