Earth experienced the hottest period of 1,400 years

The surface of the Earth has touched the warmest average heat at the end of the 20th century, the time that is thought to be the hottest in 1,400 years.

This is the result of an international study published in the famous journal Nature Geoscience (Nature Geoscience), dated April 21.

This new study has gathered weather data as well as indicators from temperature monitoring devices from wood grain, pollen, coral, lake and sea sediments, ice cores and stalagmites. Collect from 511 locations across 7 global continental regions.

Large-scale climate research for a period of two millennia, shows that the " green planet 's long cool weather " has been reversed by the end of the 19th century, except Antarctica. .

In the 20th century, the global average temperature was higher than 0.4 degrees Celsius compared to the average temperature of 500 years ago. From 1971-2000, the Earth experienced a hotter period than any other time in the past 1,400 years.

However, scientists also note, this assessment is a global average, while some regions may have experienced a warmer period, but only for a short time. For example, Europe may have been warmer in the first century AD (AD) compared to the end of the 20th century.

Previous studies on climate change have shown the "acceleration" of temperature in the 20th century, mainly due to the increase of carbon dioxide emissions (CO ₂ ) from coal, oil and human gas. The warming trend has been demonstrated by a temperature measuring device in the mid-70s of the last century, corresponding to a record high level of CO ₂ emissions.

2012 is the 36th year in a row, people have to see global temperatures rise above the average since 1880, when the first scientific climate studies were published.

According to experts, this large-scale research is the first attempt to reconstruct the temperature of more than 2,000 years on separate continents. This is part of the answer to help clarify an aspect that is currently the long-standing topic of scientific debate about the phenomenon of global warming.