Science and Technology Daily, Beijing, August 24 (Intern Gao Xingjian and reporter Fang Linlin) According to the official website of Scientific American, the latest calculation data from the US National Oceanic and Atmospheric Administration show that as of the end of July, the temperature in 2020 is the second highest in history. The gap of 0.07 degrees Fahrenheit is second only to 2016. Researchers from different teams also give high probability results. 2020 may surpass 2016 to become the hottest year in history.

　　This year's high temperature phenomenon is widespread all over the world. Siberia is one of the most significant “hot spots” in 2020. This area exceeded the highest temperature ever recorded in the area at the beginning of the year. Recently, a high temperature of 100.4 degrees Fahrenheit was detected locally. If confirmed by the World Meteorological Organization, this area It will be the first time the Arctic Circle temperature has passed Baidu. In addition, many regions around the world, including Asia, South America, the European continent and most oceans, also surpassed the average temperature of previous years, reaching the highest temperature in history in the first half of the year.

　　Regardless of the temperature changes in the second half of the year, 2020 will replace 1998 and become one of the 10 years with the highest temperature in the world. This also means that the 10 years with the highest temperature in history will all appear after 2005, with the highest temperature Seven years will appear after 2014. According to the analysis of the 2017 American Meteorological Society announcement, between the end of the 19th century and 1980, the new hottest year record appeared every 8-11 years; and the frequency of the new hottest year increased to every 3 years since 1981. -Occurs once every four years, and the speed of global warming is worrying.

　　In recent years, the problem of global warming has continued to be serious. It is especially worth noting that the main cause of high temperature in 2020 is not the El Niño phenomenon that dominated in 2016. This also reminds us that human activities emit large amounts of greenhouse gases to nature, which is still an important factor that should be paid attention to when discussing global warming issues. Large-scale high temperatures and local "hot spots" are closely related to long-term warming trends. Researchers say that apart from the impact of human activities, it is difficult to find other reasons for such a strong global heat wave in a short period of time.

　　Experts say that it is true that in the years when the El Niño phenomenon is obvious, there is indeed a higher possibility of reaching the highest temperature in the world. However, not all breakthrough high temperatures are caused by this phenomenon. For example, in 2014 and 2015, there was no El Niño phenomenon. The temperature still reached the highest value in history at that time. This also shows that the continuous global warming is gradually increasing the temperature baseline. Although there has been a “La Niña phenomenon” that helps to reduce the temperature in recent years, the continuous rise in temperature is still unavoidable. The greenhouse gas emitted by human activities is still an important factor that cannot be ignored. .