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).
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.
28 Jul 2017 - ¿Cómo se diseña una Política Oceánica que respalde la conservación de los mares y el uso sostenible de los recursos que provee? Esa fue la pregunta que articuló el taller internacional organizado por el Ministerio de Relaciones Exteriores (MINREL) con apoyo del Programa de las Naciones Unidas para el Desarrollo (PNUD) en Chile, que contó con la asistencia de expertos y representantes diplomáticos procedentes de Argentina, Australia, Colombia, Nueva Zelandia y Perú el pasado 27 de julio en Santiago.
25 July 2017 - Recent studies by Indian scientists had revealed that the trend of sea level rise in the north Indian Ocean is slightly higher than the global estimate of 3.2 mm per year, Minister of State for Earth Sciences YS Chowdary told the Rajya Sabha in a written reply.