Why is the global climate abnormal? Extreme weather is frequent?

In the past 100 years, the global average temperature has experienced

Cold-warm-cold-warm fluctuates twice, usually rising.

Trend. Global warming redistributes global precipitation.

Distribution, melting glaciers and frozen soil, and rising sea levels are both dangerous.

It destroys the balance of natural ecosystem and poses a greater threat to human beings.

Food supply and living environment. global warming

There are many reasons, mainly the following:

Greenhouse effect theory

1822, French j? Fourier first amplifier

The earth's atmosphere is compared to a "greenhouse", 1938, UK.

Engineer Galendale proposed human activities and industry.

Gases such as carbon dioxide and methane emitted by development continue.

Heat the atmosphere, thereby enhancing the greenhouse effect.

The earth's atmosphere is a mixture of many gases.

Nitrogen and oxygen account for 99% of the total, but from 3.

The greenhouse effect is mainly caused by some trace gases,

These gases are the main part of solar radiation-short

Wave and visible light absorption is weak, while the ground

Strong absorption of long-wave radiation. So when they enter the atmosphere,

When the concentration in the atmosphere increases, the greenhouse effect of the atmosphere will

Intense, resulting in the earth's surface temperature and lower atmosphere.

The temperature rises. These gases are called "greenhouse gases". near

Climate warming in the past century is considered as carbon dioxide and so on.

The concentration of greenhouse gases in the atmosphere has greatly increased.

Result.

Solar change theory

The famous Russian astronomer Habibola? Asian Broadcasting Union

Du Samatov recently proposed a human activity.

The negative view of greenhouse gas leading to greenhouse effect: people

The greenhouse gases produced by class activities can hardly be all-round.

The global climate has an impact, which is the main reason for global warming.

The reason is that the intensity of solar activity has increased.

Yes In the past 1000 years, the solar radiation was the strongest.

Period. A joint study by Swiss and German scientists found that the same is true.

The increase of solar radiation intensity has led to the recent global climate.

The root cause of change. In the last century,

The intensity of solar radiation is unprecedented.

Upward trend. Strong solar radiation causes the ocean surface

The surface temperature rises, producing a lot of greenhouse gases. Yuhai

Compared with the total amount of greenhouse gases above the ocean surface, human beings

The greenhouse gases produced by the activity can be ignored because

This is the common sense of human industrial activities and global greenhouse effect.

The causal relationship between effects cannot be established. Global rise

Wen started long before the industrial revolution. at present

The theory of "greenhouse effect" seems reasonable, but it is inconclusive.

Scientific basis. At present, the global ocean surface temperature is positive.

The cold weather means that the temperature of the earth has reached.

In addition, the observation of solar activity shows that it is the same.

The intensity of positive radiation is also slowing down, a downward trend.

This may lead to global cooling. predict

In 20 12-20 15, the global temperature will start to slow down.

Health, solar radiation intensity is expected to reach around 2040.

At the lowest point, cold will inevitably appear in

Around 2055-2060.

Cosmic ray theory

A recent experiment by scientists shows that,

Cosmic rays are very promising in the process of cloud formation.

Can play an important role, which means that

The main light has a greater impact on the climate than they thought before.

Really bigger. Cosmic rays are a kind of energy.

A stream of charged particles originating from stars bombards the ground.

Ball. It can produce charged ions in the atmosphere from

The sub-magnet attracts water vapor to condense, and finally,

Form clouds. The solar magnetic field will deflect the influence of cosmic rays.

The direction of the earth, thus reducing the amount of clouds. Clouds will also.

Sunlight reflects into space, which scientists think is 16/

It plays an important cooling role. But, if it's too

During the positive activity period, the solar magnetic field will deviate more from the original prosperity period.

Cosmic rays hit the direction of the earth, so there will be more.

Less clouds form, leading to more solar radiation.

Shooting at the earth's surface causes the earth to heat up.

Animal waste gas theory

The United Nations Food and Agriculture Organization published a report entitled "Livestock"

Environmental issues and options.

It is pointed out that the exhaust gas emitted by 65.438+0.5 billion cattle in the world is the main pollution source.

The biggest culprit of global warming. Because of cow's fart

For example, excrement will produce 100 kinds of polluted gases, among which

China's ammonia emissions account for two-thirds of the global total, and

Ammonia is the cause of acid rain. In addition, cattle are disappearing.

A large amount of methane is produced during digestion or rumination.

Emissions account for 1/3 of the global total, which is warmer.

Melting the earth is 20 times faster than carbon dioxide. the four seas—the whole country

The carbon dioxide emitted by 654.38+0.5 billion cattle accounts for the global temperature.

18% of the total indoor gas emissions. This is not only better than others.

Livestock and animals are much taller than humans.

Carbon dioxide emitted by cars. And raising cattle.

When a group needs to burn fuel to make fertilizer, in the process,

Carbon dioxide will also be released.

In recent years, with the prosperity of economy, people are spending every year.

The quantity of meat and other dairy products eaten has been listed.

It is estimated that by 2050, global meat consumption will decrease.

Consumption will increase from the current 229 million tons to

456 million tons. Milk production will also increase from 580 million tons.

To/kloc-0.043 million tons. These fast-growing cattle

The discharged waste gas directly leads to environmental crisis, such as

Extinction of marine species, desert expansion, water pollution, etc.

Livestock not only produce greenhouse gas effect, but also livestock

Raising and competing for land with forests are more conducive to regulation.

The forest area of the climate is reduced, which is further aggravated.

The trend of climate warming is analyzed. The land area of the earth

30% is now occupied by animal husbandry. Globally available

Of the cultivated land, 33% is used to grow livestock feed crops.

Unless the progress of human animal husbandry is greatly improved,

With the increase of human demand for meat, these animals

By 2050, the global warming effect caused by livestock will be.

Will double.

Scientists have been talking about global warming for a long time.

I began to study countermeasures. In recent years, they have suggested that if

Do a large-scale and long-term solution control

The temperature rises.

● Hold up the "sun umbrella". This plan has not yet been realized.

Occasionally, a "parasol" will be built to block the sun from the earth.

Calm down. In the fall of 2006, University of Arizona Astronomy.

Roger the scientist? Angel puts forward shading scheme, setting

Want to launch a UFO-like spaceship, on the ground.

Between the ball and the sun, like an umbrella to block the sun, reduce

The heat transferred from the sun to the earth decreases. Angel thinks this party

Technologies needed in this case, such as spacecraft technology, rocket technology and shielding.

The envelope materials are all mature technologies, which is highly feasible. set up

Each near-plane disc-shaped spacecraft

It weighs less than 30 grams and has a diameter of about 0.9 meters, and

Use three small "ears" to control. rocket

It is always necessary to launch about 800 thousand small plates at a time.

16 trillion small disks, which means 2000 disks are needed.

Ten thousand rocket launches. Angel expects to need 20 million yuan.

Tons of materials to make these little disks.

Imagine a sun umbrella, which costs 40 thousand yuan in 30 years.

Billions of dollars or more.

● Erect a "mirror" and place one side in space.

A reflector reflects part of the sunlight to a certain place.

Local areas can change the uniformity of local areas.

Wait for the situation. For example, because high-altitude clouds can block the earth.

Radiating heat into space will make the earth's surface more and more

Very sexy. People use space mirrors to gather sunlight.

Reflected on the clouds at high altitude, so that the clouds are gradually heated.

Spread out, accelerate the loss of surface heat and reduce the temperature of the earth.

Degree.

The manufacture and installation of space mirrors, technically

This is no longer a fantasy. 1February 4, 993,

Russian scientists on the "Progress" spacecraft,

Successfully carried out the artificial moon codenamed "Flag"

Experiment, reflecting sunlight to the back of the earth for the first time.

One side This provides a good way for the utilization of space mirrors.

Great inspiration.

Volcanic cloud, made more than ten years ago, Phippi.

Volcanic ash from the eruption of Natubo volcano covered the Ministry.

Divide the sunlight, and the temperature of the earth will decrease. Some scientists

Including Nobel Prize winner Paul? Kruchen et al., Ti

Discussion on counteracting global change with the same man-made effect.

Warm influence. Imagine throwing a lot of sulfur into

At high altitude, artificially set up a shelter between the earth and the sun.

Shade, reduce the direct sunlight on the ground, thus reducing

Ground temperature. Use jet engines, cannons or balloons

Bringing sulfur into the air can reduce the generation of solar radiation.

Hot, but increased a small amount of sulfur pollution. artificial

Volcanoes and parasols are the same, although they lower the ground.

The temperature of the ball does not reduce the oxygen in the air.

Carbonization, so it can't effectively reduce the acid in the ocean.

Degree. Scientists still hope to find more.

Adding highly effective chemicals can be used in an emergency.

When injected into the atmosphere.

● Set the "filter" to develop a filter that can be used from an empty filter.

A large filter that absorbs carbon dioxide from gas, using

The chemical reaction separates carbon from the absorbing material,

Then use a specific process to convert carbon dioxide into usable.

The form of reason. This kind of air capture device needs a lot of

Energy needs to be installed at the top of the tower 200 feet high.

Imagine installing 65438+ 10,000 in a place with abundant wind resources.

This device uses wind energy as energy source. filter

It is about the size of an ordinary TV set and can be photographed from the air every year.

Absorb 25 tons of carbon dioxide. Captured carbon dioxide

Carbon is changed into liquid or gas and transported by pipeline. but

Dealing with these carbon dioxide is very expensive, and it is the same today.

A big problem facing science and technology, at present people can

The conceivable way is to bury it underground, such as burying it.

In an old oil well or deep under the sea. In a scientific sense, it should be

This scheme is called "air capture" and the device used is called "air capture".

As an "artificial forest".

● The scheme of dumping "red iron powder" is envisaged.

The pipeline injects a lot of water and red iron powder mud into the sea.

Mud mixture. Red iron powder was dumped into the sea, causing it to float.

Swimming creatures absorb carbon dioxide from the air. Every 1 ton

Iron can absorb more than 654.38 million tons of carbon from the air into the ocean.

Some scientists think the scheme is feasible, but there is also science.

Economists believe that the scheme may have the consequences of ecological destruction.

Small-scale experiments do show that it has a certain effect, floating

Swimming creatures use iron in the air for photosynthesis.

It absorbs greenhouse gases and grows rapidly, forming in the ocean.

Into a thick sea that can absorb carbon dioxide.

Seaweed. But the large-scale use of this method may bring

Adverse ecological consequences.

Climate change needs international cooperation and must be correct.

Understanding of long-term goals and action framework. the United Nations (UN)

Framework Convention on Climate Change, Kyoto Protocol and

A series of partnerships and other practices are also international.

Cooperation provides the foundation. However, we only have one earth.

However, there are many reasons for global warming, but

Yes, it's all closely related to human beings. We should do it again.

If we go, those imaginary disasters will leave us.

It's getting closer.