Oldest ice core confirms human activity to make dramatic increase in atmospheric carbon dioxide concentration
Humans so far the oldest ice core drilling in the seal of the air show that the Earth’s atmospheric carbon dioxide levels in the past 200 years increased dramatically, far exceeding the previous highest level of a few hundred thousand years, and this is attributable to human use of fossil fuel.
The ice core was drilled from the Antarctic, there are 80 million years old. Antarctic ice core analysis of the European Project Leader, British Antarctic Survey scientist Eric Wolff institutions in the UK Science Festival a few days ago, said air bubbles in the ice core show that the concentration of atmospheric carbon dioxide over the past 200 years, an increase of 35%.
ice core shows that in the past 80 years most of the time, the changes in atmospheric carbon dioxide concentration in relatively flat, at 180-300ppm between the (1ppm as parts per million), but now has reached 380ppm. 30ppm increase in the concentration of carbon dioxide before 1000, the time needed, but only in the past 17 years has increased by so much.
isotope analysis showed that the addition of carbon dioxide from the fossil, which means that the reasons for the rising concentration of carbon dioxide in human large-scale use of coal, oil and other fossil fuels. Before the rise of modern industrial civilization, human activities have not caused significant effect on the concentration of carbon dioxide, from 1000 to 1800 AD between the concentration of 280ppm.
Wolf said that mankind is facing an unprecedented situation, “This is a result of the experiments we do not know.” Carbon dioxide is the most important greenhouse gas, scientists generally agreed that increased concentration of global warming.
最古老冰芯证实人类活动使大气中二氧化碳浓度急剧增加
人类迄今为止最古老的冰在航空展印章钻探，地球大气中的碳在过去200年的二氧化碳含量急剧增加，远远超过了数十万年前的最高水平，这是由于人类使用化石燃料。
的冰芯是从南极钻探，有80亿年的历史。南极冰欧洲项目负责人，英国南极调查局的科学家埃里克沃尔夫在英国科学节机构日前岩心分析说，冰芯中的气泡显示，在过去200年大气二氧化碳浓度的二氧化碳，增加35％。
冰芯显示，在过去80年的大部分时间，在大气二氧化碳浓度的变化相对平稳，在180 - 300ppm的为百万分之一之间（百万分之一），但现在已达到380ppm。为30ppm的二氧化碳浓度增加1000之前，所需时间，但只是在过去17年已增加了这么多。
同位素分析表明，从化石，这意味着除了二氧化碳，对于二氧化碳的大量上升，人类的煤，石油和其他化石燃料的大规模使用集中的原因。前现代工业文明兴起，人类活动并没有造成对二氧化碳的浓度显着影响，1000年至1800年之间280ppm浓度的广告。
沃尔夫说，人类正面临前所未有的局面，“这是一个实验中，我们不知道结果。”二氧化碳是最重要的温室气体，科学家普遍认为，全球变暖的浓度增加。06.9.7
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