While the ocean has long been portrayed as a victim of climate change, threatened by ocean warming and acidification, it is now increasingly framed as a key solution to the climate crisis. In particular, the promising carbon sequestration potential of the ocean is being emphasised. In this paper, we seek to historicise the practices, discourses and actors that have constructed the ocean as a climate change solution space. We conceptualise the debate about the mitigation potential of the ocean as a contested site of governance, where varying actors form alliances and different sociotechnical narratives about climate action play out. Using an innovative quali-quantitative methodology which combines scientometrics with document analysis, observational fieldwork, and interviews, we outline three historical phases in the history of ocean carbon sequestration that follow recurring cycles of hype, controversy and disappointment. We argue that the most recent hype around ocean carbon sequestration was not triggered by a technological breakthrough or a reduction in scientific uncertainty, but by new socio-technical configurations and coalitions. We conclude by showing that how climate change solutions are put on the agenda and become legitimised is both a scientific and political process, linked to how science frames the climate crisis, and ultimately, its governance.

中文翻译：

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海洋碳封存作为气候“解决方案”的兴起、衰落和重生

虽然海洋长期以来被描述为气候变化的受害者，受到海洋变暖和酸化的威胁，但现在它越来越多地被视为气候危机的关键解决方案。人们特别强调海洋的碳封存潜力。在本文中，我们试图将海洋构建为气候变化解决方案空间的实践、话语和行动者历史化。我们将有关海洋缓解潜力的辩论概念化为一个有争议的治理场所，不同的参与者组成联盟，并就气候行动展开不同的社会技术叙述。我们使用一种创新的定性定量方法，将科学计量学与文献分析、实地观察和访谈相结合，概述了海洋碳封存历史上的三个历史阶段，这些阶段遵循炒作、争议和失望的反复循环。我们认为，最近围绕海洋碳封存的炒作并不是由技术突破或科学不确定性的减少引发的，而是由新的社会技术配置和联盟引发的。最后，我们表明，如何将气候变化解决方案提上议程并使其合法化，既是一个科学过程，也是一个政治过程，与科学如何构建气候危机及其最终治理有关。