Earth's temperature changes abnormally hot and cold

The Earth is currently experiencing an unusually sudden change in temperature, from the coldest to the lowest peak in the shortest time in history, in just 100 years.

That was the discovery of American scientists in a study aimed at understanding the Earth's temperature change.

The reporter in Ottawa on March 11 led a study by scientists from Oregan University published in Science magazine that at 11,000 thousand years ago, the Earth's temperature began to cool down. Go until it suddenly rises in the twentieth century.

In particular, the 1900-1910 period was the lowest temperature of the Earth and the 2000-2010 period was the highest period. Scientist Shaun Marcott, who led the study, said the Earth had never had a temperature transition phase with such a large difference in the short time, from the lowest to the highest level within 100 year.

The cornfield withered by drought at a farm in Georgetown, Indiana on August 15.

At the end of the ice age of 7,000 years ago, the Earth took 4,000 years to increase 1.25 degrees Celsius during the twentieth century, the same increase in temperature was only 20 years, from 1920 to 1940.

To achieve this result, scientists used fossil samples of small creatures living in the sea to reconstruct the process of changing the temperature of the Earth until 11,000 years ago, the last phase of ice age and an important milestone of development history when people began to tame wild animals and cultivate agriculture.

The use of marine fossil specimens in the study has helped scientists recreate the Earth's average temperature chart to the oldest time ever.

The phenomenon of changing the temperature of the Earth, warming up after the ice age and then starting to cool down, was due to the tilt of the Earth's axis and the distance to the Sun, the factors affecting absorption and reaction. shining the heat of the Earth.

But the results of the study confirm that global warming today does not follow the law of nature but is the result of increasing carbon dioxide (CO ₂ ) emissions on Earth, especially from the industrial revolution. 250 years ago.

Scientists believe that the phenomenon of hypothermia at 100 years ago is a sign that the Earth is in the process of entering another glacial period from 1850 to 1880.

However, greenhouse emissions including carbon dioxide generated by human activity delayed the beginning of this ice age and brought the world into an uncertain future, where it is humans who influence the changing of the Earth's temperature.