F. Berzaghi, Jérôme Pinti, Olivier Aumont, Olivier Maury, Thomas Cosimano, Mary S. Wisz
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Abstract
The biological carbon pump (BCP) sequesters vast amounts of carbon in the ocean, but its importance for conservation, climate finance and international policy has not been properly assessed. Here, using spatial analysis and financial valuation of the BCP service, we estimate that, annually, the BCP adds 2.81 GtC (range 2.44–3.53 GtC) to the ocean with a storage time of at least 50 years (±25 years). This ecosystem service is worth US$545 billion per year (US$471–694 billion) in areas beyond national jurisdiction and US$383 billion per year (US$336–471 billion) within all exclusive economic zones, where the sum of its discounted values for 2023–2030 is US$2.2 trillion (range US$1.9–2.7 trillion). These results quantify the climate and economic importance of the BCP and the important role of large ocean states in carbon sequestration. These findings can support discussions in climate finance and in the COP global stocktake for climate action.
期刊介绍：
Nature Climate Change is dedicated to addressing the scientific challenge of understanding Earth's changing climate and its societal implications. As a monthly journal, it publishes significant and cutting-edge research on the nature, causes, and impacts of global climate change, as well as its implications for the economy, policy, and the world at large.
The journal publishes original research spanning the natural and social sciences, synthesizing interdisciplinary research to provide a comprehensive understanding of climate change. It upholds the high standards set by all Nature-branded journals, ensuring top-tier original research through a fair and rigorous review process, broad readership access, high standards of copy editing and production, rapid publication, and independence from academic societies and other vested interests.
Nature Climate Change serves as a platform for discussion among experts, publishing opinion, analysis, and review articles. It also features Research Highlights to highlight important developments in the field and original reporting from renowned science journalists in the form of feature articles.
Topics covered in the journal include adaptation, atmospheric science, ecology, economics, energy, impacts and vulnerability, mitigation, oceanography, policy, sociology, and sustainability, among others.
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