Da qi CO₂ bian hua yu qi hou

Translated title of the contribution: Variations of atmospheric CO₂ concentration and global climate

Zhi Liu, Xiu-ming Liu, Ping-yuan Li, Bin Lü, Jia-sheng Chen, Qu Chen, Xue-Lian Guo

    Research output: Contribution to journalArticlepeer-review

    Abstract

    In geological history, the earth's climate changed regularly and constantly and the concen- tration of atmospheric CO₂ ~dso changed over time, so scientists argue whether there were response- feedback effects between them. In this paper, global climate change is assumed to be a multiple time- scale change, various time scales including long time orbital-scale, thousand year time-scale and nearly hundred years are introduced and analyzed. For long time-scale, both average global tempera- ture and atmospheric CO₂ level present a reduction trend. Many times during geological history, at- mospheric CO₂ level rose, sometimes to as high as ten times of the present level. It is found that the high C0₂ level period was not always corresponding to the high temperature period. For thousand year time-scale, it is found that 'warm periods emerged at all global continents, for instance, the tempera- ture in medieval period was even higher than that of today. During the past one hundred year, the average global temperature rose by O. 74 ℃, and there are different understandings about the reason. It is too early to say that the global warming since the industrial revolution was mainly caused by human activities. Further investigation are required.
    Translated title of the contributionVariations of atmospheric CO₂ concentration and global climate
    Original languageChinese
    Pages (from-to)89-94
    Number of pages6
    JournalYaredai Ziyuan yu Huanjing Xuebao = Journal of subtropical resources and environment
    Volume7
    Issue number1
    Publication statusPublished - 2012

    Keywords

    • atmospheric carbon dioxide
    • climate change
    • global warming

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