@ RK, yes ocean absorb more CO2 than trees, as seagrasses and mangroves, along with their associated food webs, can sequester carbon dioxide from the atmosphere at rates up to four times higher than terrestrial forests can. Southern Ocean ( around Antarctica) absorbs much more carbon from the atmosphere than it releases, therefore, that part of ocean have the largest carbon reservoir.

Yes, the ocean absorbs more carbon dioxide (CO2) than trees and other land-based vegetation. The ocean is one of the Earth's largest carbon sinks, meaning it absorbs a significant amount of the carbon dioxide emitted into the atmosphere. While trees and vegetation on land do play a crucial role in absorbing carbon dioxide through photosynthesis, the vastness of the ocean and its ability to dissolve CO2 make it a much larger reservoir for carbon storage.

The largest carbon reservoir in the ocean is the deep ocean, particularly the deep-sea sediments. The deep ocean contains a substantial amount of dissolved inorganic carbon and organic carbon that has been transported and accumulated over long periods of time. This deep ocean carbon reservoir is estimated to be significantly larger than the carbon stored in terrestrial vegetation, soils, and the atmosphere combined.

There are various components of the ocean that store carbon:

While the ocean is a critical carbon sink, it's important to note that the absorption of excess carbon dioxide has consequences. As the ocean absorbs more CO2, it undergoes chemical changes that lead to ocean acidification, which can negatively impact marine life, particularly organisms that rely on calcium carbonate for their shells and skeletons. Balancing carbon emissions, reducing greenhouse gas emissions, and protecting marine ecosystems are all important for maintaining a healthy and sustainable ocean environment.

Dr Dr J C Tarafdan and Dr Gaurav H Tandon thank you for your contribution to the discussion

Ocean habitats such as seagrasses and mangroves, along with their associated food webs, can sequester carbon dioxide from the atmosphere at rates up to four times higher than terrestrial forests can. But a warmer, more acidic ocean does us no favors when it comes to maintaining its role as one of the biggest carbon sinks on our planet. The ocean stores 50 times more carbon than the atmosphere, and 20 times more than land plants and soil. As we burn fossil fuels and atmospheric carbon dioxide levels go up, the ocean absorbs more carbon dioxide to stay in balance. The largest reservoir of the Earth's carbon is located in the deep-ocean, with 37,000 billion tons of carbon stored, whereas approximately 65,500 billion tons are found in the globe. Carbon flows between each reservoir via the carbon cycle, which has slow and fast components.The oceans currently absorb 30-50% of the CO2 produced by the burning of fossil fuel. If they did not soak up any CO2, atmospheric CO2 levels would be much higher than the current level of 355 parts per million by volume (ppmv) - probably around 500-600 ppmv. The largest reservoir of the Earth's carbon is located in the deep-ocean, with 37,000 billion tons of carbon stored, whereas approximately 65,500 billion tons are found in the globe. Carbon flows between each reservoir via the carbon cycle, which has slow and fast components.The oceans are, by far, the largest reservoir of carbon, followed by geological reserves of fossil fuels, the terrestrial surface and the atmosphere. These are the reservoirs, or sinks, through which carbon cycles. The ocean is a giant carbon sink that absorbs carbon. Marine organisms from marsh plants to fish, from seaweed to birds, also produce carbon through living and dying. Over millions of years, dead organisms can become fossil fuels. Carbon cycles between reservoirs or sinks in the Carbon Cycle. The lithosphere stores the most carbon, some of which is found in fossil fuels. The hydrosphere is the second largest reservoir, followed by the atmosphere, and then the biosphere. Carbon dioxide is more soluble in cold water, so at high latitudes where surface cooling occurs, carbon dioxide laden water sinks to the deep ocean and becomes part of the deep ocean circulation "conveyor belt", where it stays for hundreds of years. The oceans absorb substantial amounts of carbon dioxide, and thereby consume a large portion of this greenhouse gas, which is released by human activity.