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bigelow.org
news
https://www.bigelow.org/news/articles/2023-07-07.html
Large-scale ocean iron fertilization is one of several strategies that could help remove carbon dioxide, but new research published this week in Global Change Biology by a Bigelow Laboratory for Ocean Sciences researcher and colleagues shows that it might also negatively affect marine ecosystems in far corners of the ocean. The models did show that iron fertilization could remove up to 45 gigatonnes of carbon dioxide from the ocean surface between 2005 and 2100. Large-scale ocean iron fertilization is one of several strategies that could help remove carbon dioxide, but new research published this week in Global Change Biology by a Bigelow Laboratory for Ocean Sciences researcher and colleagues shows that it might also negatively affect marine ecosystems in far corners of the ocean. The models did show that iron fertilization could remove up to 45 gigatonnes of carbon dioxide from the ocean surface between 2005 and 2100.
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whoi.edu
research
https://www.whoi.edu/ocean-learning-hub/ocean-topics/climate-weather/ocean-ba…
Iron fertilization is a Carbon Dioxide Removal (CDR) technique that would artificially add iron to the ocean’s surface to stimulate growth of phytoplankton. When the plume of dust or ash settles over the ocean’s surface, it triggers massive blooms of phytoplankton that remove substantial amounts of carbon dioxide from the atmosphere. Iron fertilization is a Carbon Dioxide Removal (CDR) technique that would mimic this natural system, artificially adding iron to the ocean’s surface to stimulate growth of phytoplankton. If relatively small amounts of iron can be added to the ocean’s surface to effectively remove large amounts of carbon dioxide from the atmosphere, iron fertilization has the potential to play a pivotal role in reducing additional impacts associated with climate change. Until experiments are done to test these potential outcomes and determine how much carbon can be sequestered in the ocean depths, iron fertilization should not be put to use as a method of slowing climate change. ### Fertilizing the Ocean with Iron.
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pubmed.ncbi.nlm.nih.gov
official
https://pubmed.ncbi.nlm.nih.gov/37409536/
Ocean iron fertilization may amplify climate change pressures on marine animal biomass for limited climate benefit. Glob Chang Biol. 2023 Sep;29(18):5250
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naturetechcollective.org
article
https://www.naturetechcollective.org/stories/ocean-iron-fertilization-a-promi…
# Ocean Iron Fertilization: A Promising Path for Carbon Removal? As a marine radiochemist and the director of the non-profit Exploring Ocean Iron Solutions (ExOIS), Dr. Buesseler shared insights on how adding small amounts of iron to the ocean could amplify its natural ability to store carbon, the potential impacts on marine ecosystems, and the path toward responsible research. When scientists compared different climate models' predictions of natural carbon flux in the ocean, the estimates ranged from 5 to 12 billion tons per year. Every marine carbon dioxide removal approach, whether it involves adding minerals, growing seaweed, or fertilizing with iron, will change ocean conditions. We need roughly 5 to 10 billion tons per year of carbon dioxide removal alongside dramatic emissions reductions to address climate change. Ocean iron fertilization might contribute 1 to 2 billion tons annually if deployed widely, though much more research is needed to confirm these estimates and assess full-scale impacts.
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us-ocb.org
article
https://www.us-ocb.org/ocean-iron-fertilization-may-amplify-pressures-on-mari…
The study's findings suggested that OIF can contribute at most a few 10s of Pg of mCDR under a high-emissions climate change scenario.
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congress.gov
official
https://www.congress.gov/crs-product/R47172
Ocean fertilization adds nutrients, such as iron, to the surface of the ocean to enhance CO2 uptake by marine algae (phytoplankton) via
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sciencedirect.com
article
https://www.sciencedirect.com/science/article/abs/pii/S095758201200119X
▻ Fertilization using iron can increase the uptake of CO2 across the sea surface. ▻ But most of this uptake is transient; long-term sequestration is difficult
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geomar.de
news
https://www.geomar.de/en/news/article/ocean-iron-fertilization-a-curse-or-a-b…
An interdisciplinary study by researchers in Kiel who work together in the Ocean of the Future Excellence Cluster calls for further research on OIF in order to be able to better assess its geoengineering potential. In their study entitled “Ocean Iron Fertilization: Why Further Research Is Needed” and published by the Kiel Institute for the World Economy, they conclude that no scientific or economic criterion has been identified so far that would suggest that OIF should be rejected, a priori, as an adjunct climate protection measure. “In order to understand the impact of OIF on oceanic processes, further research of a noncommercial nature, research that serves only science, needs to be conducted,” states Professor Andreas Oschlies of the Leibniz Institute of Marine Sciences (IFM-GEOMAR). “From the perspective of international law, the relevant agreements regarding the protection of the oceans indicate that OIF experiments are legal as long as they can be considered to constitute legitimate scientific research,” Professor Alexander Proelß of the Walter Schücking Institute for International Law explains.