IAEA - International Atomic Energy Agency

11/10/2021 | Press release | Distributed by Public on 11/10/2021 08:09

COP26: IAEA, UNESCO Call for Stronger Recognition of Ocean Acidification

Increasing global capacity for observation of and research in ocean acidification is key to help minimize the impact of climate change on oceans, participants heard at a side event at the global climate change conference.

The IAEA and the Intergovernmental Oceanographic Commission (IOC) of UNESCO invited policymakers and the world's leading ocean science experts to the event at the 26th United Nations Climate Change Conference (COP26) in Glasgow, United Kingdom, to review how the global community can best address the problem of ocean acidification and its consequences.

As the amount of carbon dioxide (CO2) increases in the atmosphere due to human activity, more CO2 will dissolve in sea water, making the oceans more acidic. This impacts plants and animals living in the ocean, which are not used to living under such acidic conditions. Corals and shellfish, for instance, corrode in an increasingly acidic environment. Because oceans absorb a third of human made, or anthropogenic, CO2, the rate at which ocean acidification will increase in the 21st century will be dependent on future CO2 emissions, according to the Intergovernmental Panel on Climate Change (IPCC) Report 2021.

"There can be no healthy planet without a healthy ocean. The global ocean community has long considered this COP26 to be the most opportune time to stop the accelerating decline of the ocean's health - a decline that is being scientifically measured by rates of the ocean's acidification, it's warming and loss of oxygen and marine habitats," said Peter Thomson, UNSG's Special Envoy for the Ocean in his opening remarks.

It has been only a decade since the scientific community identified that ocean acidification could compromise the long-term viability of vital marine ecosystems and species. This evidence triggered the UN General Assembly to recognize ocean acidification as one of ten targets under Sustainable Development Goal (SDG) 14 on Life Below Water.

"Through observation and research, we can confidently state that ocean acidification is an equally important part of the climate change conversation," said Vladimir Ryabinin, Executive Secretary of the IOC. "It is important to raise global awareness about this issue as currently it is not as well-known as global warming thus facilitate adaptation of appropriate measures in policy making."

Systematic adaptation strategies to respond to the consequences of ocean acidification are not yet in place due to fundamental technological and knowledge gaps. To address these knowledge gaps, the international experts, through currently existing mechanisms such as the UN Communities of Ocean Action on Ocean Acidification, the Global Ocean Acidification Observing Network (GOA-ON) and its UN Ocean Decade Programme Ocean Acidification Research for Sustainability (OARS), the IAEA's Ocean Acidification Coordination Centre (OA-ICC) and partner organizations, work closely to carry out global initiatives and engage scientists, communities, policymakers and the media.

"Minimizing the impacts of ocean acidification does not occur in isolation. Addressing such a complex and spiralling environmental problem requires strategic, international partnerships," said Jodie Miller of the IAEA's Department of Nuclear Sciences and Applications. "The IAEA's OA-ICC serves as an international hub to communicate, promote and facilitate international activities on ocean acidification, working closely with IOC-UNESCO, the Ocean Acidification Alliance, GOA-ON, and many other partners to spread awareness and raise capacities in this area."

Miller explained that projecting scenarios for the future and developing workable adaptation strategies require data on ocean acidification processes and the capacity of marine ecosystems to handle its consequences. The IAEA's OA-ICC contributes to these objectives by building capacities of experts worldwide to monitor ocean acidification and develop informed responses.