Ocean Fertilization

Order of the National Green Tribunal regarding pollution of Godavari river, Telangana, 29/05/2025

Order of the National Green Tribunal in the matter of News Item titled "Telangana: Deepening pollution crisis in Godawari threatens lives livelihoods appearing in the Telangana Today dated 13.05.2025" dated 29/05/2025. The application was registered suo-motu on the basis of the news item titled Telangana: Deepening pollution crisis in Godawari …

Climate engineering by mimicking natural dust climate control: the iron salt aerosol method

Power stations, ships and air traffic are among the most potent greenhouse gas emitters and are primarily responsible for global warming. Iron salt aerosols (ISAs), composed partly of iron and chloride, exert a cooling effect on climate in several ways. This article aims firstly to examine all direct and indirect …

Covariation of deep Southern Ocean oxygenation and atmospheric CO2 through the last ice age

A reconstruction of changes in ocean oxygenation throughout the last glacial cycle shows that respired carbon was removed from the deep Southern Ocean during deglaciation and Antarctic warm events, consistent with a prominent role of reduced iron fertilization and enhanced ocean ventilation, modifying atmospheric carbon dioxide concentrations over the past …

Iron fertilisation and century-scale effects of open ocean dissolution of olivine in a simulated CO2 removal experiment

Carbon dioxide removal (CDR) approaches are efforts to reduce the atmospheric CO2 concentration. Here we use a marine carbon cycle model to investigate the effects of one CDR technique: the open ocean dissolution of the iron-containing mineral olivine. We analyse the maximum CDR potential of an annual dissolution of 3 …

Geoengineering in relation to the Convention on Biological Diversity: technical and regulatory matters

The Conference of the Parties (COP) of the Convention on Biological Diversity (CBD) first turned its attention to geoengineering at its ninth meeting in 2008, in the context of ocean fertilization. The COP then requested Parties to ensure that ocean fertilization activities do not take place until there is an …

The great iron dump

The discovery that marine algal blooms deposit organic carbon to the deep ocean answers some — but not all — of the questions about whether fertilizing such blooms is a viable strategy for mitigating climate change.

Deep carbon export from a Southern Ocean iron-fertilized diatom bloom

Fertilization of the ocean by adding iron compounds has induced diatom-dominated phytoplankton blooms accompanied by considerable carbon dioxide drawdown in the ocean surface layer. However, because the fate of bloom biomass could not be adequately resolved in these experiments, the timescales of carbon sequestration from the atmosphere are uncertain. Here …

Changing basic nature

ON A pleasant morning when fifty-four-year-old Australian marine diver David Hannan was gearing to plunge into the deep sea, a bunch of American scientists were ready to set sail for the Arctic Ocean. In another corner of the world at Dona Paula in Goa oceanographers were contemplating plans to measure …

Changing basic nature

Countries move from labs to seas to study the implications of ocean acidification. On a pleasant morning when fifty-four-year-old Australian marine diver David Hannan was gearing to plunge into the deep sea, a bunch of American scientists were ready to set sail for the Arctic Ocean. In another corner of …

Iron-rich dust fuelled 4 million years of ice ages

Dust is all that's needed to plunge the world into an ice age. When blown into the sea, the iron it contains can fertilise plankton growth on a scale large enough to cause global temperatures to drop. The finding adds support to the idea of staving off climate change by …

What drives the increased phytoplankton biomass in the Arabian Sea?

The seasonal variability of phytoplankton biomass in the Arabian Sea, though a well researched topic, its inter-annual variability is less explored and understood. Analysis of the satellite-derived chlorophyll pigment concentration in the Arabian Sea during 1997

Sowing seeds uncertain: Ocean iron fertilization, climate change, and the international environmental law framework

In a world plagued by the effects of climate change, ocean iron fertilization and other geoengineering techniques1 could help to respond and adapt to this global environmental crisis. Nevertheless, the international community, consistent with its reactions to other science-inspired responses to modern problems, has approached the promise of ocean iron …

Whale droppings can help combat climate change

London: Australian scientists have found that whale faeces could help combat global warming by allowing the Southern Ocean to absorb more carbon dioxide. Researchers at the Australian Antarctic Division claimed that whale excrement, rich with iron, is a natural ocean fertiliser that can allow the whole eco-system to send more …

The Ocean and climate change: tools and guidelines for action

This document provides an overview of the interactions between the ocean and climate and describes the impacts of climate change on the marine ecosystems and the goods and services they provide human society. Further, it outlines a set of recommendations for marine-related mitigation and adaptation policy and implementation actions. The …

Scientific synthesis on the impacts of ocean fertilization on marine biodiversity

Ocean fertilization has been highly publicized as a cost effective strategy for mitigating climate change. However, these costs do not effectively account for the observed shortcomings in sequestration efficiency, nor the total economic value of ecosystem function which might be lost due to ocean fertilization, and have been significantly underestimated. …

Changes in major carbon components during a fertilization experiment with surface water from the Central Indian Ocean

Shipboard iron- and macronutrient-addition experiment was conducted in the Central Indian Ocean, to investigate the variations of carbon in different forms and its records for plankton activities. Experiments were conducted in four 500-L acrylic barrels with the surface seawater near 24

Nitrogen and iron fertilization in the oceans: potential means to sequester CO2 from the atmosphere

The breadth and complexity of the global ocean, covering more than 70 percent of Earth's surface, have challenged our ability to explore, comprehend, predict and even control its processes and behavior. It is now generally accepted that the world oceans are by far the largest sink of anthropogenic CO2 one …

Include ocean acidification to save marine ecosystem

Bangladesh Academy of Science and the academies of 69 other countries around the world in a joint statement yesterday warned that ocean acidification, one of the world's most important climate change challenges, may be left off the agenda at the United Nations Copenhagen conference. The statement, which was published through …

Ocean seeding fails

Algae grown to trap CO2 become feed for organisms THE Indo-German experiment to induce algal bloom in the South Atlantic Ocean has been ruined by tiny marine organisms called zooplanktons. They ate half the algae grown by spraying a swathe of the ocean surface with iron dust. The ocean fertilization …

The coming global climate-technology revolution

Emissions of CO2 and other greenhouse gases can be reduced significantly using existing technologies, but stabilizing concentrations will require a technological revolution because it will require fundamental change, achieved within a relatively short period of time. Inspiration for a climate technology revolution is often drawn from the Apollo space program …

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