5月15日,记者从山东科技大学获悉,山东科技大学地质工程2000级校友、中国科学院南京地质古生物研究所研究员陈继涛博士研究发现,3亿年前的大气二氧化碳和氧气浓度与现代大致相当。

“大约3亿年前的晚古生代大冰期期间,地球上发生过一次短暂的巨大碳排放事件,导致海面温度上升,海洋缺氧,海洋生物多样性显著减少。”陈继涛认为,3.6-2.8亿年的晚古生代大冰期是地球上持续时间最长、规模最大的冰室气候,也是自陆生高等植物和陆地生态系统建立以来,地球唯一一次从冰室气候转变为温室气候。在地质时期,当时的大气二氧化碳和氧气浓度与现代相当,可以很好地与今天人类生活的冰室气候环境相比较。

陈继涛说,地球在晚古生代大冰期发生了巨量的碳排放,导致当时全球气候显著变暖,导致海面温度升高约4℃,全球海洋缺氧面积扩大至22%,海洋生物多样性显著减少。

陈继涛长期关注这一问题,为预测全球变暖的趋势和影响提供了理论依据。

On May 15, the reporter learned from Shandong University of Science and Technology that Dr. Chen Jitao, a 2000-level alumnus of Geological Engineering of Shandong University of Science and Technology and a researcher at the Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, found that the concentration of carbon dioxide and oxygen in the atmosphere 300 million years ago was roughly equivalent to modern times.

“During the Great Ice Age of the Late Paleozoic about 300 million years ago, there was a brief and huge carbon emission event on the earth, which caused the sea surface temperature to rise, the ocean to lack oxygen, and the marine biodiversity to decrease significantly.” Chen Jitao believes that 360-280 million years ago The Late Paleozoic Great Ice Age is the longest and largest ice chamber climate on earth, and it is also the only time since the establishment of terrestrial higher plants and terrestrial ecosystems that the earth has changed from an ice chamber climate to a greenhouse climate. During geological time, atmospheric carbon dioxide and oxygen concentrations were comparable to those of modern times and can be well compared to the ice chamber climates in which humans live today.

Chen Jitao said that the earth had a huge amount of carbon emissions during the late Paleozoic ice age, which led to a significant warming of the global climate at that time, resulting in an increase in sea surface temperature of about 4°C, an increase in the area of ​​global ocean hypoxia to 22%, and a significant reduction in marine biodiversity. .

Chen Jitao has been concerned about this issue for a long time, providing a theoretical basis for predicting the trend and impact of global warming.

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