Tuesday, June 04, 2024

Seaweed carbon sink power revealed, but they are estimates

Here is another example of what little we still know about weather/climate on our planet! Global Warming is a hoax and Climate Change a religion!

Notice these estimates are again based on computer models and forecasting! How reliable and accurate, who knows!

"... Published in the journal Nature Geoscience, the new study led by the University of Western Australia has put the carbon transport capacity of ocean seaweed at 10-170 million tonnes per year.
That carbon, captured by seaweed forests, can be used to generate energy for the plants. About 15% of the carbon absorbed is transferred to deep ocean sinks. ..."

From the abstract:
"The coastal ocean represents an important global carbon sink and is a focus for interventions to mitigate climate change and meet the Paris Agreement targets while supporting biodiversity and other ecosystem functions. However, the fate of the flux of carbon exported from seaweed forests—the world’s largest coastal vegetated ecosystem—is a key unknown in marine carbon budgets. Here we provide national and global estimates for seaweed-derived particulate carbon export below 200 m depth, which totalled 3–4% of the ocean carbon sink capacity. We characterized export using models of seaweed forest extent, production and decomposition, as well as shelf–open ocean water exchange. On average, 15% of seaweed production is estimated to be exported across the continental shelf, which equates to 56 TgC yr−1 (range: 10–170 TgC yr−1). Using modelled sequestration timescales below 200 m depth, we estimated that each year, 4–44 Tg seaweed-derived carbon could be sequestered for 100 years. Determining the full extent of seaweed carbon sequestration remains challenging, but critical to guide efforts to conserve seaweed forests, which are in decline globally. Our estimate does not include shelf burial and dissolved and refractory carbon pathways; still it highlights a relevant potential contribution of seaweed to natural carbon sinks."

Seaweed carbon sink power revealed





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