Iron fertilization refers to both natural and intentional processes that replenish iron in the upper ocean. Iron can stimulate the growth of phytoplankton,
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.
* *In response to climate change, several carbon dioxide removal approaches involving the marine environment are being studied, with ocean iron fertilization being among those with the greatest potential, according to the U.S. National Academies of Sciences.*. But many of these tests did not aim to answer essential questions about how effectively phytoplankton growth from iron additions might lead to long-term storage of atmospheric carbon dioxide in the deep ocean, questions that are absolutely critical to understanding if iron fertilization might be a viable carbon removal approach. If there is any chance that ocean iron fertilization could be ecologically acceptable, socially supported, and viable as a carbon removal approach, it is important that we do the research now to understand if and how it could contribute to shifting our climate course.
# Exploring responsible uses of the ocean to address our climate crisis. ## Ocean Iron Fertilization: A part in the solution to climate change? Adding iron could, therefore, help spur growth of phytoplankton and increase both the uptake of carbon dioxide by the ocean and the amount that gets sequestered at depth. The purpose of the ExOIS consortium is to resolve the impact of enhanced iron fertilization on marine ecosystems and its potential for removal of atmospheric carbon dioxide. We believe that enhancing the ocean’s natural biological carbon pump may be a responsible way to help control increases in atmospheric carbon dioxide. We will follow our five guiding principles for ocean CDR which promote responsible and transparent research as we assess the potential intended and unintended consequences, while considering the social implications and collective benefit of ocean CDR. **The tiny ocean organisms that could help the climate in a big way**.
# 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.
Ocean iron fertilization (OIF), an ocean-based geoengineering technique, aims to increase the rate of atmospheric CO2 transfer to the deep ocean
Ocean iron fertilization (OIF) has been suggested as a potential geoengineering strategy to enhance the growth of marine phytoplankton.
Adding iron deposits stimulates phytoplankton growth to decrease the levels of carbon dioxide through photosynthesis.