Who can give me five important current affairs news? thank you

There may be more frequent abnormal weather in the future.

India is suffering from severe high temperature and drought, with the highest temperature approaching 50 C; Persistent "northern hemisphere" rare snowstorm and severe cold; The worst high temperature in Russia in recent 40 years and the drought that caused forest fires; Heat waves swept across many countries in the northern hemisphere; The strong storm "singa" swept through Europe; In Uganda, massive mudslides claimed hundreds of lives; Severe avalanches ravaged the central and southern regions; Nearly 8 1 year-old, Pakistan has 1800 people killed in the biggest flood caused by heavy rain; Strong typhoon "Miyu" ravaged Southeast Asia; Innovating the rainstorm record in Rio de Janeiro, Brazil. _ China has just used it for 20 10 years.

A very frequent extreme weather event looks around the world, and extreme weather is attacking cities and territories everywhere. Australia in the southern hemisphere is free from the "once in 200 years" flood; At present, more than 800 people have been killed in floods and landslides in Brazil. Floods left 36 million people homeless in Sri Lanka; Japan and South Korea have the lowest temperatures in decades.

Extreme weather is raging, and human beings are facing new challenges from nature. Facing the challenge, the meteorological science community is not prepared to make a deal?

Extreme weather forces

20 10 is the warmest year on record.

20 10 has recorded the wettest and hottest year. * * * Countries with high temperature history have 18, and some areas in Europe and Australia have experienced unusually cold years.

Many people still remember last year's abnormal climate events: severe drought in southwest China, frequent rainstorms in southern Hainan, scarce precipitation, and heavy precipitation triggered Zhouqu mudslide. ......

Guangzhou's "May 7th" storm is still vivid. On May 6-7 last year, it rained 2 13. 1mm in three hours in Guangzhou. That week, the week after three heavy rains, the maximum rainfall was 440 mm, equivalent to a quarter of Guangzhou's, and the annual precipitation in Guangzhou broke the record of a hundred years. "The impact is great, the intensity of precipitation is great, the duration is long, and history is rare." Comments on Lin Liangxun, chief forecaster of Guangdong Meteorological Observatory.

"20 10 comprehensively evaluates the impact of climate in depressed years." According to the report of the Provincial Meteorological Bureau, according to incomplete statistics, meteorological disasters in Guangdong last year caused a total of about 142 billion, 145 deaths, and 4 1 missing, resulting in direct economic losses. Among them, the weather in Guangdong has the greatest impact on the strong typhoon "Fanbia".

Since 2 1 last September, "Fan Yabi" has swept across most parts of Guangdong and western Guangdong, causing serious mudslides, causing more than one million people to be affected, and hundreds of people were killed or missing. Collapsed houses16000; The affected area of crops is 66.4 thousand hectares; The direct economic loss exceeded 5 billion yuan. example

The southern region is the epitome of the whole country. The recently released China Climate Bulletin for 20 10 shows that the annual precipitation in China in 20 10 is 68 1mm, which is 2 1.5% more than normal. "20 10 has frequent extreme high temperature and heavy precipitation events with great intensity and rare history, which is the most unusual climate in this century!"

In fact, extreme weather swept the world in the past year. India suffered from severe high temperature and drought, with the highest temperature approaching 50 C; The worst high temperature in Russia in recent 40 years and the drought that caused forest fires; Nearly 8 1 year-old, the largest flood in history caused by heavy rain in Pakistan caused nearly 1800 deaths. ......

1On October 20th, the World Meteorological Organization issued a statement saying that "20 10 was the hottest year on record!" The World Meteorological Organization stipulates that in 20 10-

Statistics show that the global average temperature is higher than 196 1 year and 1990 is higher than 0.53℃. Experts recorded 20 10 years, 2005 and 1998 (0.0 1℃ and 0.

A large number of extreme weather becomes a significant function of 20 10. 20 10 is the wettest and hottest year on record. * * * There are 18 countries with a history of high temperature. The World Meteorological Organization also said that in 20 10, the temperatures in most parts of Africa, South Asia and West Asia and the Arctic were higher than those in previous years, and the highest temperatures were recorded in many places, while some areas in Europe and Australia were experiencing abnormal cold in 10.

According to experts from the World Meteorological Organization in Asral, computer simulation shows that with the global warming, extreme weather events will occur more frequently and violently in the future, and will have a wider regional impact. For example, the heat wave that only appeared once in the past 100 years may occur once every 20 years. By the end of the century, the hot summer of 2003 did not seem special in Europe.

"In recent years, the characteristics of extreme weather and the frequency of extreme breakthroughs (records) increased worldwide are also increasing." Yao Shengqiu, a researcher at China Academy of Sciences, said.

According to his analysis, this continuous breakthrough in two directions, that is, the highest temperature may be higher and higher, and the lowest temperature may be lower and lower. "People will feel that especially hot summer, especially cold winter, is not just changing in one direction."

Will global warming bring trouble?

Some experts say that the culprit is the absolute La Nina phenomenon.

And global warming and the increase of extreme weather events, but there is not enough evidence yet.

However, due to frequent extreme weather, the global scientific community can hardly reach an agreement.

Strictly speaking, few scientists will draw conclusions about the specific deep-seated reasons for frequent jumping off buildings in extreme weather. Because climate research is a statistical science, it takes 5- 10 years to reach a conclusion. Faced with frequent climate disasters, the meteorological community is obviously under great pressure. However, the cause and forecast are still at a loss in the meteorological field. Compared with outside scholars, meteorologists are more taboo when answering questions such as extreme weather.

"The increase in extreme weather events is a fact, but its root cause is a worldwide problem, and there is no conclusion yet. The meteorological community can't give an exact answer! " Under the questioning of Nanfang Daily reporter, Lin Liangxun, chief forecaster of Guangdong Meteorological Observatory, admitted.

20 10 when analyzing the weather and climate, Song Lianchun, director of the National Climate Center, said that the influence scope of climate is the complex system of atmosphere, ocean and ice, land and rocks. The exception of 20 10 is closely related to various fields and their interactions. The weather and climate anomalies in China are closely related to the climate system.

Due to the recent floods and mudslides in the southern hemisphere, Australia, Brazil and other countries, many experts believe that La Nina is the culprit. La Nina refers to the persistence of unusually cold sea surface temperature in the eastern and central equatorial Pacific (the opposite of El Ni? o), which means "little girl" (El Ni? o), also known as "anti-El Ni? o" or "cold event". "

Kuang Yaoqiu introduced that the phenomena of "El Nino" and "La Nina" often appear alternately. But from a meteorological point of view, they are often associated with droughts and floods. The southwest drought occurred in China. Last year may have been caused by El Nino. "El Nino" disappeared after July, and "La Nina" began to form last year.

But meteorologists who can influence climate change are mainly concentrated in the Pacific Rim, and they can't fully explain why extreme weather events occur frequently all over the world. at present

The companies on the list believe that the impact of extreme weather events on global warming has attracted the attention of most scholars. However, there are no convincing results and conclusions in the whole scientific community.

Song Lianchun also believes that global warming is the background of the increase and strengthening of extreme events. Global warming in the past century is not only manifested in the rise of temperature, but also in the increase of temperature change rate, and extreme weather events are more conclusive. In the past few decades, extreme events have become more and more frequent, which will not only lead to high temperature and heat wave, but also lead to extreme low temperature events. The intensity and frequency of rainstorm will increase in cold areas, and the intensity of rainstorm in warm areas will increase.

And global warming will lead to frequent extreme weather events? In Guangdong Meteorological Bureau, it is necessary to know the opinions of the chief experts. This proposition can neither be proved nor forged. "There is an inevitable connection between global warming and the increase of extreme weather events, but there is not enough evidence yet." The impact of human activities on the environment

The impact is also the feedback of some extreme weather events, which is regarded as the natural right to punish human beings.

What kind of "bad boy" challenges the government in extreme weather?

Asslar, an expert from the World Meteorological Organization, said that as early as 1990, the climate model had predicted that there would be stronger and more frequent extreme weather events in global warming. The first assessment report, the United Nations Intergovernmental Panel on Climate Change (IPCC), indicates that the frequency of high-temperature events will be more frequent in the future, and it is expected that the frequency of low-temperature events will be reduced. Changing the air flow and changing its coverage are also involved, but the report says it is difficult to predict.

In fact, extreme weather is like a naughty "bad boy", not only in China and Guangdong, but all over the world, and it is basically helpless.

Lin Liangxun analyzed that there are two kinds of abnormal weather: gradual weather and sudden weather. The former refers to the formation, such as a cumulative process of low temperature last year, which made the annual temperature history in Guangdong earlier than 3℃-4℃, and the formation of drought. The latter refers to the occurrence of short-term disastrous weather, such as typhoon and rainstorm.

"For the gradual emergence of extreme weather, we will have the opportunity to appear in the observation period of its statistics and monitoring, thus providing some estimates, forecasts and early warnings in time." Lin Liangxun said, but for the latter, it is still difficult for the meteorological forecasting department to accurately predict.

From a certain point of view, the history of human development is a positive feedback that nature has been tamed gradually with the improvement of human technological progress in the process of conquering nature in human history, but the impact on the environment and the end of human activities are considered as the punishment of nature for human beings and some extreme weather events. The relationship between man and nature is being repositioned.

In the new historical process, all countries in the world, including meteorologists and natural scientists, cannot sit idly by. As a well-known expert in China, Lin Liangxun said that capturing the signals of some extreme weather events from the meteorological community of global climate change, such as La Ni? a and El Ni? o years, what kind of climate change and temperature change on the Qinghai-Tibet Plateau, will change the thickness and area of the Arctic ice layer and have any impact on human beings. Through these studies, "find some early signals, and then find the occurrence of extreme weather as soon as possible."

After forecasting and early warning, meteorological monitoring provides information to the public when events close to decision-making occur, including how to deal with such extreme weather events, only wind and rain, and also to prevent secondary disasters such as mudslides and landslides.

"Climate and climate change are increasingly becoming an important global issue." Song Lianchun said that although climate change is gradual and gradual, the impact of extreme weather and climate events is sudden, while extreme weather events that severely affect human beings are profound. Human society must shoulder the responsibility of "* * * and difference" and take urgent action to deal with the impact of climate change.

● Nanfang Daily reporter Huang Ying