The ocean is our greatest climate regulator. It must be a stronger part of climate policy and action

PTI, Nov 26, 2021, 10:45 AM IST

Source: The Conversation

The German linguist Heinrich Zimmer once described the ocean as “limitless and immortal … the beginning and end of all things on Earth”.

Standing on the shores of an ocean, one can easily sense this. Yet, the more we reveal about the myriad processes within the world’s oceans, the more we begin to question just how limitless and immortal the ocean truly is.

The ocean is one of the Earth’s greatest climate regulators. It absorbs almost a third of emitted carbon dioxide and more than 90 percent of excess heat. But the latest scientific report from the UN’s Intergovernmental Panel on Climate Change (IPCC) revealed the ocean may be nearing a tipping point.

Historic levels of ocean acidification, warming, and deoxygenation (oxygen loss) are irreversibly affecting marine biodiversity and critical ecosystem functions.

Despite a critical need to incorporate the ocean into climate policies, a connection between climate, ocean, and biodiversity regimes has been slow to form.

The Glasgow Climate Pact, decided during COP26 earlier this month, may herald a new age. For the first time, the ocean was formally included in UN climate negotiation processes.

A request was also made for the UN Framework Convention on Climate Change (UNFCCC) to hold an annual Ocean and Climate Change Dialogue to strengthen ocean-based action.

This annual meeting will build on the first Ocean and Climate Change Dialogue, which was requested by COP25 in Madrid in 2019 and held virtually as part of UNFCCC discussions in 2020. Prior to this meeting, submissions were sought on priorities and perspectives for ocean-related climate mitigation and adaptation.

In our paper, we share an in-depth analysis of these submissions and the first Ocean and Climate Change Dialogue, providing a baseline for continued progress.

This analysis also informs the UN Decade of Ocean Science for Sustainable Development and the UN Decade of Ecosystem Restoration, as well as ongoing negotiations on managing the high seas, or areas of the ocean beyond national jurisdiction.

In total, there were 47 submissions, from governments and non-governmental organizations (NGOs). Governmental submissions represented 120 of the 197 nations within the UNFCCC, from large coastal or island nations with a strong history of ocean management and policy. However, several major coastal nations were absent (including the US, China, India, Brazil, and the Russian Federation).

The COP26 summit highlighted the lack of inclusion for all groups in the negotiations, particularly limited access for developing countries, observers, and NGOs. The very format of the Ocean and Climate Change Dialogue allowed for a more inclusive process. It revealed different perspectives between governmental and NGO submissions on several key issues.

For example, NGOs more frequently considered ocean ecosystem impacts (such as changes to species distribution and ocean circulation), the deep sea, and vulnerabilities to saltwater intrusion into drinking water reserves. The differences in focus highlighted by the Ocean and Climate Change Dialogue underscore the need to ensure all global concerns are heard fully during future COP summits.

All submissions reflected the intrinsic ties between society and the services the ocean provides, from fisheries to carbon sequestration. They also highlighted the many intersections between climate adaptation and mitigation and respective policies.

As seen in the Glasgow Climate Pact, many submissions joined ocean, climate, and biodiversity issues. This reflects the growing emphasis on actions and policies that consider the climate crisis holistically, instead of focusing just on atmospheric or terrestrial components.

Most submissions highlighted the need for policies that promote ecosystem resilience and include biodiversity management to support crucial ecosystem functions, such as trapping carbon.

This included nature-based solutions, such as restoring mangrove forests to enhance shoreline protection from storms and promote healthy fisheries, and “blue carbon”, capable of trapping more carbon per unit area than forests.

A focus was seen in the Ocean and Climate Change Dialogue on ensuring adequate funding to achieve climate goals. More than half of all submissions referred to finance, but it was more strongly considered by NGOs than by governments.

Finance was a pivotal issue at COP26, reported as one of the most challenging plans to agree on. This includes issues such as how much finance goes to adaptation over mitigation and the degree to which rich nations support developing countries bearing the brunt of the climate crisis, despite being the least responsible.

Human rights issues and the importance of transparent, inclusive, fair governance (good governance) were mentioned frequently in the submissions in relation to ocean management, mitigation, and adaptation measures.

The continued evolution towards integrated climate action through the Ocean and Climate Change Dialogue and the Glasgow Climate Pact is a major victory. However, high ambition was elusive at COP26 and it will require more work to prevent severe climate impacts on sensitive marine ecosystems and the people who rely on them.

The Dialogue highlighted several next steps, including featuring the ocean in the UNFCCC global stocktake, addressing gaps in ocean finance, and increasing ocean science in (and produced by) developing countries.

The ocean has been buffering the impacts of climate change since the industrial revolution, but we are now reaching the limits of this capacity. The integrated ocean-climate policy is a crucial part of our fight against the code red for humanity. The next year of negotiations will show if we can achieve this.

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