The research team led by Jonathan Patz, a professor at Wisconsin State University, and Diarmid Campbell Landreu, an epidemiologist at the World Health Organization (WHO) pointed out that the losses caused by global climate change may far exceed people's earlier estimates, because climate change will cause chain-like damage.
Climate warming will be more suitable for the breeding of pathogens, and the incidence of infectious diseases such as malaria, Lyme disease, West Nile fever and respiratory diseases such as asthma will increase; The increase of extreme weather will make floods more frequent, which will affect the safety of drinking water in many areas and weaken the self-cleaning ability of nature. In addition, they also pointed out that some developing countries along the Indian Ocean and the Pacific Ocean, as well as the least developed African countries in the hinterland of the Sahara desert, are also most seriously affected by the negative impact of climate change. At the same time, the few developed countries that emit the most greenhouse gases, because of their strong social wealth and perfect social security system, the damage caused by climate warming is the least. Diarrhea is closely related to climate.
They pointed out: "The most common diseases that people in poor countries get are closely related to the climate, such as diarrhea and malnutrition." Dr. Campbell Landreu also said, "These countries have made unremitting efforts to control the disease, but global climate change can easily undermine their achievements."
according to the estimate of the world health organization (WHO), the number of seriously ill people caused by global warming has reached 5 million every year, and 15, people have died. By 23, these numbers will at least double. In addition, heart failure, respiratory dysfunction, patients with infectious diseases and famine caused by crop reduction will all increase greatly in the future. In short, global climate change will greatly endanger human health, destroy the ecosystem, and then bring huge economic losses to the whole society. At the end of the twentieth century, 2 million people were threatened by the tsunami.
scientists estimate that by the end of last century, greenhouse gases caused by human activities may increase the average temperature of the earth by 1.4℃ to 5.8℃. By 28, the sea level may rise by 4 cm, and the number of coastal residents threatened by hurricanes, floods and tsunamis will also increase from the current 75 million to 2 million. A report entitled "Himalayan Glaciers, Glacier Retreat and Its Impact on Nepal, India and China" previously released by WWF pointed out that the rate of Himalayan Glacier Retreat is accelerating due to global warming. The rapid retreat of Himalayan glaciers will first lead to a sharp increase in river inflow and a large-scale flood outbreak, but this phenomenon will turn into a decline in river water level in a few decades, which will seriously affect the environment and economy in some parts of Asia.
on October 15th, 25, the latest research results released by American scientists show that due to global warming, the climate is generally getting worse, and the areas with heavy rain and heavy snow will increase.
Gerald Mill, principal researcher of the National Center for Atmospheric Research, said: "The simulation shows that there will be more precipitation in most parts of the world this century." He said that with the intensification of global warming, the rainfall and snowfall in this century will increase by 1% to 2% on average. There will probably be more stormy and snowy weather in late autumn, late winter and early spring.
According to the computer meteorological simulation, Mill and his colleagues speculated that the area where the storm and snow increased was most likely the place where a lot of humid air gathered. These areas include the northwest and northeast of North America, northern Europe, northern Asia, the east coast of Asia, southwestern Australia and south-central South America. Precipitation will increase the most in the equatorial region with the fastest atmospheric warming. The main reason for the increase of stormy and snowy weather is that as the earth warms, the temperature of the atmosphere and ocean surface also rises, which leads to the intensification of water evaporation and the increase of air water content. The humid air drifts from the ocean to the land, and the storm formed becomes more violent after being mixed with rain and snow.
The results show that when there are more severe storms and snows in some areas, other areas will face the danger of increasing drought. Mill said: "We will feel this influence more and more obviously." Their analysis report and other research results show that there seems to be no way for human beings to reverse the trend of global warming in the short term.
In the summer of 25, Shanghai was hit by one typhoon after another. Although the number did not exceed that of previous years, the intensity was relatively strong, and the impact on coastal cities also increased significantly. What is the reason for this phenomenon? At the Yangtze River Delta Meteorological Science and Technology Innovation Forum held yesterday, experts hit the nail on the head: global warming is the biggest "suspect".
It is understood that due to the strong intensity of subtropical high this year and the influence of many weather factors, the location affected by typhoon is obviously northward. With the global warming, the frequency and intensity of typhoons and their impact on coastal cities tend to increase.
In this regard, Academician Chen Lianshou of the Chinese Academy of Meteorological Sciences said yesterday that global warming will lead to an increase in sea surface temperature; The rising sea surface temperature has played a role in fueling the typhoon. At present, there are two views in the scientific community. One is that global warming and rising sea temperature will make typhoons gain more energy, and thus their intensity will be strengthened. Another research result shows that the activities of typhoons and hurricanes are closely related to the El Ni? o phenomenon.
Robert Collier, an American expert, is worried that if global warming continues at this rate, the Greenland ice cap will melt in a few hundred years, and the world ocean water level will increase by 6 to 7 meters, which will threaten the life of more than 1.2 billion people living within 3 kilometers of the coastline.