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).
19 Nov 2018 - A methodology to measure marine acidity will help keep track of countries' efforts to combat ocean acidification as pace increases to implement the UN Sustainable Development Goals (SDGs).
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.
19 Nov 2018 - The Lab has opened its call for proposals for the 2019 cycle, seeking innovative financial ideas that can unlock investment to tackle some of the most difficult climate and sustainable development challenges.
11 Oct 2018 - A new study examines how renewable energy, marine protected areas, carbon storage in marine plants, and other ocean-based solutions could help combat climate change and its effects on marine ecosystems.