For the next 50 years, residents of Latin America, the Middle East, South Asia, East Asia, Southeast Asia and parts of North America and Europe will have to live with extreme weather like the Sahara Desert. .
Someone may be thinking that humans will live on an extraterrestrial planet in the future. But for many, it is even more important to protect the Earth's "common home" from the effects of climate change.
However, if emissions of CO 2 continues to rise and is not strictly controlled as now, it would be a terrible disaster for humanity at the end of this century.
In the next 50 years, we will have to live with the type of extreme weather like the Sahara desert.
According to a study published in the Proceedings of the National Academy of Sciences on Monday (May 4), the high temperature commonly seen in the Sahara desert is likely to occur at about 20%. the global area , or about one-third of where humanity lives if CO 2 continues to grow.
The team used historical data from about 6,000 years ago to explore the climatic conditions that humans have experienced. It turns out that humans can survive all levels of rain but except for the driest and hottest places on Earth.
Human civilization has adapted very well to the fertile lands, nourished by the water from the rivers. But it's rare for us to see civilizations appear in dry, hot places like the desert.
Research results show that humans can only evolve and develop within a narrow temperature range. In which the average annual temperature ranges from 11-15 degrees C. If people are living in an area with stable temperatures, less volatility, crop and livestock productivity will be much better. compared to areas with large, hot temperatures throughout the year.
Of course there are other factors that affect human development but above all, temperature is still the most important factor affecting the survival and development of mankind. Especially, the sudden increase in temperature in the next 50 years will be much harsher than what people have experienced during the past 6,000 years.
Rising temperatures on a global scale are affecting everyone in the world.
But it would be terrible if a climate shock could change everything and turn the Earth into a "furnace" in the future. Scientists realize that rising temperatures on a global scale are affecting everyone in the world. Not only is the number of deaths due to record heat waves increasing but also productivity is being reduced by billions of hours. Although people still find ways to survive with high temperatures, for example in the countries of the Middle East or South Asia. But that is when the temperature has not yet reached the extreme.
Research by US scientists uses RCP8.5, a scenario that describes the highest levels of carbon emissions in order to model what could happen by the end of this century. The Sahara is one of the only places on Earth that has an annual average temperature above 29 degrees Celsius. But areas with such temperatures account for only 0.8% of the world's land area.
However, by 2070, regions with temperatures similar to the Sahara desert could account for up to 20% of the Earth's area. It is also home to 3 billion people. And if they do not migrate to other areas, they will have to continue living with the same high temperature as the Sahara in the future.
When depicted on the map, it creates an extremely shocking view. Almost all of Brazil will become extremely hot and hard to live. The countries of the Middle East, India, Southeast Asia, East Asia and parts of Australia are no exception. Sadly, places that are seriously affected by the temperature include developing and vulnerable countries.
Countries located in the tropics, including Vietnam, will be severely affected by the record-breaking heat events in the next 50 years.
But the impact will certainly not stop in developed countries, but will continue to spread throughout the southern United States and the Mediterranean in the distant future. Now only part of the area in the tropics and near the pole becomes the most livable place now. It is no joke that we will all want to move to Siberia to live by the end of this century.
The above warning will force us to change if we do not want to receive the most bitter consequences. If people continue to emit CO 2 without a strong roadmap of reduction, the wave of migration in 2070 is entirely possible. Once the climate is beyond human tolerance, it is time for the natural selection process to begin and that humans are the creatures that go through that process.
Of course the current top goal is to reduce greenhouse gas emissions and equally important to prepare early migration scenarios due to climate change in the future to avoid large fluctuations.