气候变化领域集成服务门户(CCPortal): Evolution of the Global Carbon Cycle and Climate Regulation on Earth

CCPortal

DOI	10.1029/2018GB006061
	Evolution of the Global Carbon Cycle and Climate Regulation on Earth
	Isson T.T.; Planavsky N.J.; Coogan L.A.; Stewart E.M.; Ague J.J.; Bolton E.W.; Zhang S.; McKenzie N.R.; Kump L.R.
发表日期	2020
ISSN	0886-6236
EISSN	1944-9224
卷号	34 期号:2
英文摘要	The existence of stabilizing feedbacks within Earth's climate system is generally thought to be necessary for the persistence of liquid water and life. Over the course of Earth's history, Earth's atmospheric composition appears to have adjusted to the gradual increase in solar luminosity, resulting in persistently habitable surface temperatures. With limited exceptions, the Earth system has been observed to recover rapidly from pulsed climatic perturbations. Carbon dioxide (CO2) regulation via negative feedbacks within the coupled global carbon‐silica cycles are classically viewed as the main processes giving rise to climate stability on Earth. Here we review the long‐term global carbon cycle budget, and how the processes modulating Earth's climate system have evolved over time. Specifically, we focus on the relative roles that shifts in carbon sources and sinks have played in driving long‐term changes in atmospheric pCO2. We make the case that marine processes are an important component of the canonical silicate weathering feedback, and have played a much more important role in pCO2 regulation than traditionally imagined. Notably, geochemical evidence indicate that the weathering of marine sediments and off‐axis basalt alteration act as major carbon sinks. However, this sink was potentially dampened during Earth's early history when oceans had higher levels of dissolved silicon (Si), iron (Fe), and magnesium (Mg), and instead likely fostered more extensive carbon recycling within the ocean‐atmosphere system via reverse weathering—that in turn acted to elevate ocean‐atmosphere CO2 levels. © 2019. American Geophysical Union. All Rights Reserved.
英文关键词	Carbon Cycle; Climate; Degassing; Reverse Weathering; Weathering
语种	英语
scopus关键词	atmosphere-ocean coupling; carbon cycle; carbon dioxide; carbon sink; chemical weathering; climate change; degassing; marine sediment
来源期刊	Global Biogeochemical Cycles
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/129669
作者单位	Department of Geology and Geophysics, Yale University, New Haven, CT, United States; School of Science, University of Waikato (Tauranga), Tauranga, New Zealand; School of Earth and Ocean Sciences, University of Victoria, Victoria, BC, Canada; Department of Earth Sciences, University of Hong Kong, Hong Kong; Department of Geosciences, Pennsylvania State University, University Park, PA, United States
推荐引用方式 GB/T 7714	Isson T.T.,Planavsky N.J.,Coogan L.A.,et al. Evolution of the Global Carbon Cycle and Climate Regulation on Earth[J],2020,34(2).
APA	Isson T.T..,Planavsky N.J..,Coogan L.A..,Stewart E.M..,Ague J.J..,...&Kump L.R..(2020).Evolution of the Global Carbon Cycle and Climate Regulation on Earth.Global Biogeochemical Cycles,34(2).
MLA	Isson T.T.,et al."Evolution of the Global Carbon Cycle and Climate Regulation on Earth".Global Biogeochemical Cycles 34.2(2020).