[ SDG Target 14.3 ] Minimize and address the impacts of ocean acidification, including through enhanced scientific cooperation at all levels.
Atmospheric carbon dioxide (CO2) levels are rising as a result of human activities, such as fossil fuel burning, and are increasing the acidity of seawater. This process is known as ocean acidification. Historically, the ocean has absorbed approximately 30% of all CO2 released into the atmosphere by humans since the start of the industrial revolution, resulting in a 26% increase in the acidity of the ocean (average global decrease in ocean pH of about 0.1 unit).
Ocean acidification makes it more difficult for the numerous organisms that fix calcium carbonate in their skeletons and shells to do so, and can also impact metabolic and reproductive processes in many marine species. By impacting marine ecosystems at multiple levels, it has significant potential to affect food security and livelihoods that depend upon healthy marine ecosystems. The economic impact of ocean acidification could be substantial.
Reducing CO2 emissions is the only way to minimize long-term, large-scale risks from ocean acidification (IGBP, IOC, SCOR, 2013, p. 1).
The event highlights ocean-based science and engineering successes in the areas of resilience, adaptation, mitigation and sustainability and promote scalable solutions across human, climate and ecological dimensions.
11 Dec 2018 - In his keynote address, Peter Thomson, the UN Secretary General’s Special Envoy for the Ocean, said the second UN Ocean Conference in 2020 should focus on action and funding needed to address risks to the ocean as they relate to climate change.