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什么时候地球的二氧化碳没有人为气候变化吗?

我的一个朋友告诉我很认真,盖亚已经进化人类燃烧化石燃料,从而阻止地球的有限公司₂。

撇开显而易见的废话也提高一个有趣的问题,我们停止耗尽有限公司₂吗?除了火山活动有什么过程,碳捕获的化石燃料和石灰石回到大气中?它是合理的,地球可能会在大气中运行如此之低,植物不能进行光合作用?

回答

显生宙CO 2 <子> < /订阅>大气水平:[![在这里输入图像描述][1]][1]生物圈消费有限公司<子> 2 < /订阅>并将其存储在寒武纪大爆发以来岩石圈。循环模式与构造相关的周期,命名为[威尔逊循环][2],湿草地形成了两个超级大陆显生宙期间:Rodinia和盘古大陆。[![在这里输入图像描述][3]][3]当一个超级大陆休息,一个新的海洋的形成和后寒武纪有限公司<子> 2 < /订阅>开始得到存储在碳酸盐平台接近新成立的海岸线,减少大气中的水平。当海洋形成于威尔逊循环足够老,海洋地壳开始撤去后,大陆和寒武纪碳返回大气层的一部分(钙碱性岩浆)[4]的火山弧。这就是开始发生在大西洋。>目前,大西洋有三个孤立的俯冲带:>在加勒比海小安的列斯群岛,Scotia电弧在南大西洋>,在地中海直布罗陀弧。> > [![在这里输入图像描述][5]][5]> >来源:[earthmagazine.org][6]的一部分股份有限公司<子> 2 < /订阅>被存储在大陆地壳,在岩石圈水库的形式CaCO <子> 3 < /订阅>。 So the balance of Wilson Cycle since the Cambrian is a reduction of CO2 in the atmosphere (shown in the first graph), and an increase of Continental Crust. The second consequence applies for the hole Earth History where the Wilson Cycle has been operating. A teacher told us in University the Pacific ring is more powerfull than Atlantic dorsal, and Atlantic Ocean is going to disappear. If that is true, in the following millions of years, part of the CO2 stored in the Atlantic Ocean will return to the atmosphere. So answering your question, the Earth would not run out of CO2 in the next million years with no human intervention. Some CO2 stored in the Atlantic Ocean is going to be released to the atmosphere. Maybe in the next Wilson Cycle when the Atlantic Ocean closes forming a new supercontinent and breaking again forming a new ocean, but it is a nosense to talk about climate in said 100my as human technology for sure will modelate climate in the future. > Apart from volcanism are there any processes that return carbon captured in fossil fuels and limestone to the atmosphere? Apart from humans burning fossil fuels and volcanism, CaCO3 starts to dissolve in the oceans at certain profundity/pressure. The level when CaCO3 start to dissolve is known as [Carbonate compensation depth (CCD)][7]. The ocean is in equillibrium with the atmosphere because of [Henry's law][8] so that affects atmospheric CO2 levels. [1]: https://i.stack.imgur.com/BvgmP.png [2]: https://en.wikipedia.org/wiki/Wilson_Cycle [3]: https://i.stack.imgur.com/E3KEz.png [4]: https://en.wikipedia.org/wiki/Calc-alkaline_magma_series [5]: https://i.stack.imgur.com/xxIVY.jpg [6]: https://www.earthmagazine.org/article/new-subduction-zone-may-close-atlantic-ocean#:~:text=Currently%2C%20the%20Atlantic%20has%20three%20isolated%20subduction%20zones%3A,with%20the%20ongoing%20subduction%20of%20the%20Gibraltar%20Arc. [7]: https://en.wikipedia.org/wiki/Carbonate_compensation_depth#:~:text=Carbonate%20compensation%20depth%20%28%20CCD%29%20is%20the%20depth,sediments%20on%20the%20sea%20floor%20below%20this%20depth. [8]: https://en.wikipedia.org/wiki/Henry%27s_law

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