On May 15, the reporter learned from Shandong University of science and technology that the team of Dr. Chen Jitao, a class 2000 alumnus of geological engineering of the school of Geosciences of Shandong University of science and technology and a researcher of Nanjing Institute of Geology and paleontology of the Chinese Academy of Sciences, found that the concentration of atmospheric carbon dioxide and oxygen 300 million years ago was roughly the same as that of modern times. Industrial intelligence.
"During the late Paleozoic ice age about 300 million years ago, there was a brief huge amount of carbon emission event on the earth, which led to the rise of sea surface temperature, marine hypoxia and the significant reduction of marine biodiversity." Chen Jitao said that the late Paleozoic ice age of 360-280 million years was the longest lasting and largest ice chamber climate on the earth. It was also the only geological period since the establishment of terrestrial higher plants and terrestrial ecosystem to record the transformation of the earth from ice chamber climate to greenhouse climate. The concentration of atmospheric carbon dioxide and oxygen at that time was similar to that of modern times, which can be well compared with the ice chamber climate environment in which human beings live today.
Chen Jitao said that the huge amount of carbon emission events on the earth during the late Paleozoic great ice age caused the significant warming of the global climate at that time, resulting in the increase of seawater surface temperature by about 4 ℃ and the expansion of the global ocean anoxic area to 22%, which led to the significant reduction of marine biodiversity.
Chen Jitao's long-term attention to this issue provides a theoretical basis for predicting the trend and impact of global warming.