What effect does the abnormal climate have on our life?

In recent years, great changes have taken place in the weather, the most obvious being the increase of temperature and the increase of El Ni? o cases. Ice water on many mountains also began to melt. The artificial destruction of coral reefs in the sea area has also led to the rise of sea level. Many forest fires caused by high temperature will directly aggravate the storms throughout the year. However, this situation is gradually improving. But going back to the past will take at least many years, decades and hundreds of years. Strengthening people's awareness of environmental protection is one of the most important problems to be solved. However, the production of disposable chopsticks is not strictly prohibited in China. There are still many sewage problems in major factories that need to be treated or not. These are not optimistic facts. I think it's useless to talk more today when interests can confuse people's eyes. It is useless to really achieve results. It's no use just talking.

With global warming, extreme weather phenomena caused by abnormal climate such as warm winter, heavy fog and heavy rain occur frequently. Take the rainy weather in Nanjing as an example. In recent ten years, droughts and floods have occurred frequently, and the cycle of droughts and floods has become shorter, with fewer and fewer normal rainy days. After the El Ni? o phenomenon appeared last year, the temperature in the province has been high this year, with rain and waterlogging in the north and drought in the south of our province in summer. Some time ago, the cold air kept going south, and this year "La Nina".

In this regard, Professor Yu Zhihao from the School of Atmospheric Sciences of Nanjing University analyzed that according to his experience, 10 La Nina has about six times, and the cold air will be more active in winter, resulting in cold winter.

"La Nina" is a completely opposite climate phenomenon to "El Nino". This term sounds strange, but it will also bring a series of abnormal climate phenomena. According to the forecast of the National Climate Center of the Central Meteorological Observatory, at present, the equatorial Middle East Pacific has entered the "La Nina state".

Meteorologists explained that the so-called "La Nina state" means that the SST index of the equator, the Middle East and the Pacific Ocean has been below -0.5℃ for six consecutive months. Because of the abnormal decrease of sea surface water temperature, it is just the opposite of El Ni? o, so it is also called "anti-El Ni? o" phenomenon.

From the beginning of the last century to 1992, La Nina occurred 19 times, about once every 3 -5 years, but there were also times when the interval exceeded 10 years. The last La Nina occurred in 2003, that is, four years ago. As mentioned above, La Nina phenomenon mainly follows El Ni? o phenomenon. 36860 . 68686868686

Compared with El Ni? o, La Ni? a is relatively rare, and the duration of a La Ni? a process is relatively short, usually several months, and there are few interannual events. Only one interannual La Ni? a event occurred in 19. Therefore, La Nina occurs less frequently and on a smaller scale than El Nino.

According to the statistics of National Climate Center, "La Nina phenomenon" occurred in the second half of 1962, 1967, 1974, 1984 and 1995. According to statistics, the precipitation in the Yellow River and Huaihe River basins in China was too high in that autumn, and the proportion of precipitation in some areas in the middle reaches of the Yellow River was too high. During La Nina period, there were many typhoons in the western Pacific (including the South China Sea) and typhoons affecting China, which was just the opposite of El Ni? o period.

Specific analysis, some places will be hot and some places will be cold. The greenhouse effect does not mean that the temperature will continue to rise. In Europe, global warming will be manifested as getting hotter in summer and colder in winter.

The greenhouse effect slows down the speed of ocean currents, and the winter in Europe is getting colder and colder.

165438+1At the end of October, European countries were hit by snowstorms and cold currents, from Britain to Poland, from Germany to Greece, all of which were affected by sudden cooling to varying degrees. Heavy snow caused traffic chaos, power failure, school closure, and some people froze to death in the cold ... Why is it getting colder and colder in winter in Europe?

It is particularly cold in Europe this winter.

In North Rhine-westfalen, the most populous German state, the snowfall was as high as 20 cm, and the airport was forced to close. Airport spokesman Tollsten Hillman told reporters: "I have worked in this airport for 1 1 year, and I don't remember anything similar happening in the past." In France, heavy snow caused some roads to be blocked, and traffic jams in some areas were about 50 kilometers long. At present, the government has frozen three French people to death in the street.

In fact, cold weather has become the daily life of Europeans. In March this year, the temperature in Paris, Berlin, Vienna and other cities dropped by more than 5 degrees compared with the same period last year.

It's cold for a reason.

Professor Steffen Ramsdorf of the German Institute for Climate Change told the reporter that the winter temperature in European cities can generally be 9℃- 18℃ higher than that in other areas of the same latitude, which is attributed to the warm current in the North Atlantic, and the growing cold in Europe is also due to the circulation of the Atlantic ocean current.

The picture on the right shows the circulation diagram of the Atlantic ocean current. As shown in the picture, in the middle of the Atlantic Ocean, an ocean current will move northward in a clockwise circulation. When this tributary flows to the sea near Norway, its warm seawater has cooled. Because of the low temperature, this ocean current begins to sink, then flows back to the south of the equator and is heated again, thus pushing the warm ocean current to flow northward at high latitudes. Therefore, this ocean current will continue to bring heat to the north Atlantic, making the middle.

Now, however, scientists have found that the speed of the Atlantic Ocean current that brings warmth to Europe in winter is slowing down. 1On October 30th, Harry Braddon, a scientist from ocean centre, Southampton, England, published his research results in Science magazine: in 2004, a research team led by him conducted a sampling survey between the Bahamas and the Canary Islands along 25 degrees north latitude. The salinity and density of water were measured and compared with the records of 1957, 198 1, 1992 and 1998. It was found that since 1957, the velocity of deep-sea cold water return has obviously decreased, especially.

Global warming is the culprit.

The slow speed of the Atlantic ocean current means that the temperature of the North Atlantic and nearby continental blocks has dropped. This is the reason why it is getting colder and colder in winter in Europe. What causes the North Atlantic warm current to slow down?

Scientists at the Hadley Center of the British Meteorological Office believe that the reason for the change of the Atlantic ocean current is that the greenhouse effect caused by human beings has increased the amount of fresh water flowing to the Atlantic Ocean. Global warming causes the Greenland ice sheet to melt faster, the Arctic ice and snow melt, and a large amount of fresh water is injected into the North Atlantic. The sinking speed of water is related to the salt content and density. The density of salt is high, so the water sinks quickly. Fresh water is lighter and less dense than salty seawater. Even cold water will not sink too deep, so the sinking speed of the melting ice water in the North Atlantic drops sharply, and a large amount of fresh water accumulates on the ocean surface, resulting in insufficient power to move northward and eventually slowing down or even stopping.

Will it get cold in winter in Europe?

According to the ancient meteorological records, the temperature in the north has dropped by 10 degrees in several decades due to the slowing or stopping of ocean currents. In the past ice age, the climate changed suddenly and violently because the circulation system in the Atlantic stopped working. Scientists including Harry Bladen predict that if the ocean current slows down, the winter temperature in Britain will drop by 2 degrees in the next 10 year. If the ocean current stops completely, the average temperature in northern Europe and western Europe may drop by 6 degrees or even 10 degree in the next 20 years, which is a very obvious change and will make winter extremely cold.

Scientists say that global warming does not mean that the temperature has been rising. In Europe, global warming will be manifested as getting hotter in summer and colder in winter. Some scientists believe that the earth is approaching the end of the solar warming cycle, and global warming will eventually make the earth enter the next cold period. It can be predicted that if global warming continues, the temperature in Europe will drop further, and the temperature in warm northwest Europe will be the same as that in Siberia now.

Guidefes, an oceanographer at the University of Hamburg, said that this phenomenon shows that "we are really changing the climate and urgently need to formulate policies to protect the environment". Specific analysis, some places will be hot and some places will be cold. The greenhouse effect does not mean that the temperature has been rising. In Europe, global warming will be manifested as getting hotter in summer and colder in winter.

The greenhouse effect slows down the speed of ocean currents, and the winter in Europe is getting colder and colder.

165438+1At the end of October, European countries were hit by snowstorms and cold currents, from Britain to Poland, from Germany to Greece, all of which were affected by sudden cooling to varying degrees. Heavy snow caused traffic chaos, power failure, school closure, and some people froze to death in the cold ... Why is it getting colder and colder in winter in Europe?

It is particularly cold in Europe this winter.

In North Rhine-westfalen, the most populous German state, the snowfall was as high as 20 cm, and the airport was forced to close. Airport spokesman Tollsten Hillman told reporters: "I have worked in this airport for 1 1 year, and I don't remember anything similar happening in the past." In France, heavy snow caused some roads to be blocked, and traffic jams in some areas were about 50 kilometers long. At present, the government has frozen three French people to death in the street.

In fact, cold weather has become the daily life of Europeans. In March this year, the temperature in Paris, Berlin, Vienna and other cities dropped by more than 5 degrees compared with the same period last year.

It's cold for a reason.

Professor Steffen Ramsdorf of the German Institute for Climate Change told the reporter that the winter temperature in European cities can generally be 9℃- 18℃ higher than that in other areas of the same latitude, which is attributed to the warm current in the North Atlantic, and the growing cold in Europe is also due to the circulation of the Atlantic ocean current.

The picture on the right shows the circulation diagram of the Atlantic ocean current. As shown in the picture, in the middle of the Atlantic Ocean, an ocean current will move northward in a clockwise circulation. When this tributary flows to the sea near Norway, its warm seawater has cooled. Because of the low temperature, this ocean current begins to sink, then flows back to the south of the equator and is heated again, thus pushing the warm ocean current to flow northward at high latitudes. Therefore, this ocean current will continue to bring heat to the north Atlantic, making the middle.

Now, however, scientists have found that the speed of the Atlantic Ocean current that brings warmth to Europe in winter is slowing down. 1On October 30th, Harry Braddon, a scientist from ocean centre, Southampton, England, published his research results in Science magazine: in 2004, a research team led by him conducted a sampling survey between the Bahamas and the Canary Islands along 25 degrees north latitude. The salinity and density of water were measured and compared with the records of 1957, 198 1, 1992 and 1998. It was found that since 1957, the velocity of deep-sea cold water return has obviously decreased, especially.

Global warming is the culprit.

The slow speed of the Atlantic ocean current means that the temperature of the North Atlantic and nearby continental blocks has dropped. This is the reason why it is getting colder and colder in winter in Europe. What causes the North Atlantic warm current to slow down?

Scientists at the Hadley Center of the British Meteorological Office believe that the reason for the change of the Atlantic ocean current is that the greenhouse effect caused by human beings has increased the amount of fresh water flowing to the Atlantic Ocean. Global warming causes the Greenland ice sheet to melt faster, the Arctic ice and snow melt, and a large amount of fresh water is injected into the North Atlantic. The sinking speed of water is related to the salt content and density. The density of salt is high, so the water sinks quickly. Fresh water is lighter and less dense than salty seawater. Even cold water will not sink too deep, so the sinking speed of the melting ice water in the North Atlantic drops sharply, and a large amount of fresh water accumulates on the ocean surface, resulting in insufficient power to move northward and eventually slowing down or even stopping.

Will it get cold in winter in Europe?

According to the ancient meteorological records, the temperature in the north has dropped by 10 degrees in several decades due to the slowing or stopping of ocean currents. In the past ice age, the climate changed suddenly and violently because the circulation system in the Atlantic stopped working. Scientists including Harry Bladen predict that if the ocean current slows down, the winter temperature in Britain will drop by 2 degrees in the next 10 year. If the ocean current stops completely, the average temperature in northern Europe and western Europe may drop by 6 degrees or even 10 degree in the next 20 years, which is a very obvious change and will make winter extremely cold.

Scientists say that global warming does not mean that the temperature has been rising. In Europe, global warming will be manifested as getting hotter in summer and colder in winter. Some scientists believe that the earth is approaching the end of the solar warming cycle, and global warming will eventually make the earth enter the next cold period. It can be predicted that if global warming continues, the temperature in Europe will drop further, and the temperature in warm northwest Europe will be the same as that in Siberia now.

This phenomenon shows that "we are really changing the climate and urgently need to formulate environmental protection policies".