Sentences with phrase «sequester ocean carbon»

While it may be critical to sequester ocean carbon at depths greater than 1000 meters, this might prove extremely difficult given very high rates of respiration of particulate matter and remineralization by bacteria, resulting in only 1 - 10 % of sinking particulates reaching depths below 1000 meters.

Not exact matches

Nutiva is focused on regenerative agriculture so it can sequester carbon from the atmosphere and oceans, putting it into the soil so the soil can hold more water, use less fertilizer and enhance nutritional elements in foods.

«We're trying to assess the amount of carbon sequestered in the bodies of these animals as part of the ocean's carbon budget, something that has not been done accurately before,» Robison says.

Unless the seepage rate of sequestered carbon dioxide can be held to 1 percent every 1,000 years, overall temperature rise could still reach dangerous levels that cause sea level rise and ocean acidification, concludes the research published yesterday in Nature Geoscience.

Despite the size of the bloom, however, the plankton did not take in a record - breaking amount of carbon dioxide — only about 20 % more carbon than that part of the ocean sequesters biologically each year.

There are signs, however, that the ocean's capacity to sequester atmospheric carbon dioxide has been decreasing over the past few decades, says climate scientist Samuel Jaccard of ETH Zurich in Switzerland.

For instance, the deep microbes, estimated to hold one - third of Earth's total biomass, take carbon out of the ocean and sequester it when they die.

Dust from the Sahara Desert provides most of the iron found in the Atlantic Ocean, according to research that also sheds light on how the oceans help sequester carbon dioxide

In a statement published after the experiment was completed, the Alfred Wegener Institute, where Smetacek works, said the results «dampened hopes on the potential of the Southern Ocean to sequester significant amounts of carbon dioxide and thus mitigate global warming.»

The approach ranked as the study's least viable strategy, in part because less than a quarter of the algae could be expected to eventually sink to the bottom of the ocean, which would be the only way that carbon would be sequestered for a long period of time.

The results, says Mick Follows, associate professor in MIT's Department of Earth, Atmospheric and Planetary Sciences, suggest that mixotrophic organisms may make the ocean more efficient in storing carbon, which in turn enhances the efficiency with which the oceans sequester carbon dioxide.

Once these leave the euphotic zone, sinking into the ocean depths, the carbon can be sequestered for a season or for centuries.

«This is because the coastal ocean is shallower than the open ocean and can quickly transfer sequestered carbon dioxide to the deep ocean; this process creates an additional and effective pathway for the ocean to take up and store anthropogenic carbon dioxide,» said Cai, the Mary A.S. Lighthipe Professor in the College of Earth, Ocean, and Environocean is shallower than the open ocean and can quickly transfer sequestered carbon dioxide to the deep ocean; this process creates an additional and effective pathway for the ocean to take up and store anthropogenic carbon dioxide,» said Cai, the Mary A.S. Lighthipe Professor in the College of Earth, Ocean, and Environocean and can quickly transfer sequestered carbon dioxide to the deep ocean; this process creates an additional and effective pathway for the ocean to take up and store anthropogenic carbon dioxide,» said Cai, the Mary A.S. Lighthipe Professor in the College of Earth, Ocean, and Environocean; this process creates an additional and effective pathway for the ocean to take up and store anthropogenic carbon dioxide,» said Cai, the Mary A.S. Lighthipe Professor in the College of Earth, Ocean, and Environocean to take up and store anthropogenic carbon dioxide,» said Cai, the Mary A.S. Lighthipe Professor in the College of Earth, Ocean, and EnvironOcean, and Environment.

(Either way, the chance is very small that a carbon atom in the ocean will be incorporated into organic matter or chemically combined with a carbonate cation to form calcium carbonate that will end up sequestered in sediments, where it might remain for hundreds of millions of years.)

In that project, US entrepreneur Russ George convinced a Haida Nation village to pursue iron fertilization to boost salmon populations, with the potential to sell carbon credits based on the amount of CO2 that would be sequestered in the ocean.

Grazers and filter feeders drive the ocean's biological pump as they remove and sequester carbon at various rates.

That fell through, but Russ George apparently pursuaded tribal leaders they could sequester carbon, and make millions of dollars, by seeding ocean plankton with algae.

One of the pathways for the ocean to naturally sequester carbon from the atmosphere is by storing it in the deep ocean as organic carbon for hundreds — if not thousands — of years.

Although seagrasses account for less than 0.2 % of the world's oceans, they sequester approximately 10 % of the carbon buried in ocean sediment annually (27.4 Tg of carbon per year) *.

Coastal habitats cover less than 20 % of the total ocean area, but account for approximately half of the total carbon sequestered in ocean sediments.

Many scientists expect that carbon emitted from the burning of greenhouse gases and its accompanying heat will be predominantly sequestered within the deep ocean instead of the atmosphere.

Those are probably still a couple decades away, but prototypes of conceptually much simpler six µm scale motors that could someday navigate the oceans to sequester carbon dioxide have been demonstrated.

Mangroves, tidal salt marshes, and seagrasses sequester and store significant amounts of coastal blue carbon from the atmosphere and ocean and are now recognized for their role in mitigating climate change.

* the carbon reservoir in the deep ocean is so large that we could sequester CO2 there without affecting the overall acidity of the deep ocean.

Flannery's book suggests that covering something like 9 % of the world's oceans with seaweed farms could sequester the equivalent of the entire world's carbon emissions one day.

There does need to be more study to identify exactly how much carbon dioxide is actually sequestered in the bottom of the ocean, but the use of iron as a fertilizer in naturally barren areas of the ocean to induce plankton blooms is no different from what mankind has been doing for thousands of yeas — albeit on the ocean versus on land.

«But it has dampened hopes on the potential of the Southern Ocean to sequester significant amounts of carbon dioxide (CO2) and thus mitigate global warming.»

Which lead me to this: http://www.npr.org/2012/07/18/156976147/can-adding-iron-to-oceans-slow-global-warming then to this study: http://www.nature.com/nature/journal/v487/n7407/full/nature11229.html Money shot (last line in abstract):» Thus, iron - fertilized diatom blooms may sequester carbon for timescales of centuries in ocean bottom water and for longer in the sediments.

The ocean has enormous potential to help produce low - carbon energy and sequester atmospheric carbon, writes World Ocean Council's Paul Holocean has enormous potential to help produce low - carbon energy and sequester atmospheric carbon, writes World Ocean Council's Paul HolOcean Council's Paul Holthus.

Thus, iron - fertilized diatom blooms may sequester carbon for timescales of centuries in ocean bottom water and for longer in the sediments.

«We estimate that the amount of carbon sequestered in the growing forests was about 10 to 50 percent of the total carbon that would have needed to come out of the atmosphere and oceans at that time to account for the observed changes in carbon dioxide concentrations,» said Nevle, a visiting scholar in the Department of Geological and Environmental Sciences at Stanford.

At the end of the 100 - year simulation, only 46 % of sequestered carbon injected at 1000 meters remained within the Southern Ocean, and only 56 % in the 2000 meter experiment;

And since 70 % of the planet is covered by clear blue water, anything that reduces the oceans» capacity to soak up and sequester carbon could only make climate change more certain and more swift.

Life has a tendency to sequester carbon below ground causing coal and oil deposits on long time scales, removing it from the atmosphere / ocean system, and therefore acting as a net sink.

The findings could also help scientists understand how the ocean sequesters carbon dioxide from the atmosphere and lead to updates in ocean climate models.

The effects vary by region, and they are significant, altering the ocean's carbon cycle from the surface, where photosynthetic organisms fix carbon from the atmosphere, all the way through the water column to the seafloor, where carbon can be sequestered.

Citation: Wendel, J. (2016), Icebergs fertilize Southern Ocean, sequester carbon, Eos, 97, doi: 10.1029 / 2016EO043707.

The primary natural way the Earth removes carbon dioxide from the atmopshere is through rock weathering, which pulls the CO2 from the air and eventually sequesters it in limestone at the bottom of the ocean.

(4) They concluded that such attempts to artificially seed the ocean were unlikely to sequester much carbon dioxide.

Sequestering carbon in these parts of the global ocean via iron fertilization «would require significant ecosystem change,» Trull's paper said.

In that project, US entrepreneur Russ George convinced a Haida Nation village to pursue iron fertilization to boost salmon populations, with the potential to sell carbon credits based on the amount of CO2 that would be sequestered in the ocean.

Could ocean acidification inhibit the oceanic biological pump by reducing the ability of shell and skeleton builders to sequester carbon?

In Lab 6A, you learned that the ocean's biological pump sequesters large amounts of carbon dioxide in shell - building organisms that eventually die, sink and become part of deep ocean sediments for very long time scales - thousands to millions of years.

The world's oceans are carbon sinks that sequester a third of the carbon dioxide released into the atmosphere.

The Arctic ocean sequesters carbon, and the oceans currents carry that cold water to other places, where they heat back up and release the CO2 again.

From the formula, we can see that the carbon footprint area is essentially calculated by dividing total anthropogenic carbon emissions remaining after accounting for ocean uptake (i.e., 72 % of net human emissions) by the rate at which existing forests sequester carbon.

«We estimate that the amount of carbon sequestered in the growing forests was about 10 to 50 percent of the total carbon that would have needed to come out of the atmosphere and oceans at that time to account for the observed changes in carbon dioxide concentrations,» said Richard Nevle, visiting scholar in the Department of Geological and Environmental Sciences at Stanford.

Or what if ocean iron fertilization really can sequester massive amounts of carbon?

At the base of the foodchain are phytoplankton, the primary producers, which not only support the marine ecosystem but sequester carbon to the deep ocean.

«The big question to this day is, what fraction of that carbon gets out of the surface water and into the deep ocean where it's sequestered for long periods of time, keeping it out of the atmosphere?»