Sentences with phrase «ocean carbon sinks»

Measuring O2 and calculating land and ocean carbon sinks

«(C) the carbon cycle, including impacts related to the thawing of permafrost, the frequency and intensity of wildfire, and terrestrial and ocean carbon sinks;

This appears to be due to an underestimate of land or ocean carbon sinks in some ESMs.

About half of the current carbon dioxide emissions are taken up by land and ocean carbon sinks.

The discussion talks explicitly about how diminishing terrestrial and ocean carbon sinks over time require reduced CO2 emissions from fossil fuels / land use to achieve stabilization goals at various levels (e.g. 550 ppmv of CO2 in the atmosphere).

«(C) the carbon cycle, including impacts related to the thawing of permafrost, the frequency and intensity of wildfire, and terrestrial and ocean carbon sinks;

The values derived by the ECS represent a stabilization of temperatures, and when systems like ocean carbon sinks are added to the mix, stabilization can take millennia.

MacGilchrista, G. A., A. Naveira Garabatoa, T. Tsubouchib, S. Baconb, S. Torres - Valdes and K. Azetsu - Scott, 2014: The Arctic Ocean carbon sink.

Use this form to email «Southern Ocean carbon sink filling up fast» to someone you know: http://www.abc.net.au/science/articles/2007/05/18/1926751.htm?

That means Co2 is not supposed to be going back into the ocean carbon sink, not releasing from it.

We don't know whether or not natural sinks have grown in recent decades... — McKinley et al., 2017 «The sum of the available evidence indicates that variability in the ocean carbon sink is significant and is driven primarily by physical processes of upwelling, convection, and advection.

Not exact matches

Massachusetts ocean waters are biologically diverse, support the Bay State's traditional fishing industry, and act as natural carbon sinks.

The study contradicts earlier inferences that the Southern Ocean's carbon sink has been weak in the 21st century.

Although the oceans are currently the greatest carbon sink, terrestrial carbon sinks also play a significant role in keeping the carbon out of the atmosphere.

For example, soil is second only to oceans as the planet's largest carbon sink, while agriculture and land use changes represent the second largest source of greenhouse gas emissions.

When the creatures die, they sink to the ocean floor, effectively sequestering that carbon for hundreds or even thousands of years.

«To put this in some kind of context, if those small scale eddies did not increase with wind stress then the saturation of carbon dioxide in the Southern Ocean sink would occur twice as rapidly and more heat would enter our atmosphere and sooner.»

In the report, an international team of climate scientists warns policy - makers that levels of carbon dioxide in the atmosphere are at the extreme end of predictions made only in 2007, and that natural CO2 sinks such as oceans are becoming saturated.

At various points in Earth's history, dust fell into the ocean and fed algae, which gobbled up carbon dioxide and sank to the bottom of the sea, taking greenhouse gas with them and cooling the world.

«The amount of carbon that you can sink into the Southern Ocean is much less than I expected.»

«That's one reason we care — the ocean is the biggest sink of carbon dioxide, and by looking at nitrogen isotopes we can indirectly look at what draws down carbon dioxide.»

When phytoplankton die, their carbon - based bodies sink to the ocean floor, where they can remain for millions of years.

This paper outlines a new framework for assessing errors and their impact on the uncertainties associated with calculating carbon sinks on land and in oceans.

You report on a successful trial of ocean iron - seeding to promote plankton growth and potential carbon sequestration via the sinking...

We have shown that hydrothermal vent fluids contain almost none of the organic carbon which accumulates in the oceans, which means that vents are a sink for this unreactive «stored» carbon.»

Some of this carbon then sinks to the bottom of the ocean when the phytoplankton die, locking it away in the deep sea for thousands of years.

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.

Dr Jeff Hawkes, the lead author of this study, from the NOC said: «There has been a long outstanding question about whether hydrothermal vents are a source or sink of organic carbon to the oceans.

Humans do emit only a fraction of the 750 gigatons of CO2 that move through the atmosphere each year, but small changes in the total amount can overwhelm so - called carbon «sinks» such as the ocean, resulting in important, and cumulative, changes in the atmosphere.

The relationship between our future carbon dioxide emissions and future climate change depends strongly on the capacity of the ocean - carbon sink.

This has been particularly true of the ocean - carbon sink.

For assessing the global ocean - carbon sink, McKinley and her co-authors from the National Oceanic and Atmospheric Administration (NOAA) Pacific Marine Environmental Laboratory, NCAR and the University of Colorado Boulder used the model to establish a long - running climate scenario from historical data.

Here, the ocean - carbon sink has increased, absorbing more carbon dioxide.

We're better able to see when human activity begins to affect the ocean - carbon sink,» she explains.

«What we find is that observations today are not sufficient to be able to see change in the ocean - carbon sink,» McKinley explains.

«New climate model better predicts changes to ocean - carbon sink.»

In using the model to assess the ocean - carbon sink, the researchers assumed a «business as usual» carbon dioxide emissions trajectory, the Representative Concentration Pathway 8.5 scenario found in the Intergovernmental Panel on Climate Change for 2006 - 2010, where emissions continue to rise throughout the 21st century.

«It essentially means that, through multiple means, in a world with mixotrophs, more organic carbon is sinking into the deep ocean than in a world without mixotrophs,» Follows says.

Then, when these microscopic creatures die, they would sink to the bottom of the ocean and take the carbon with them.

«The faster a particle sinks, the more likely its carbon will be stored in the ocean for centuries,» she says.

These more substantial organisms, compared to smaller and lighter plankton, were more capable of sinking to the ocean floor, as carbon - containing detritus.

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

The scientists focused on the ocean's biological pump, which exports organic carbon from the euphotic zone — the well - lit, upper ocean — through sinking particulate matter, largely from zooplankton feces and aggregates of algae.

Deploying new sensors that drift with sometimes strong currents (allowing better measurement of marine snow than sensors placed on the ocean floor or tethered to the surface), the team sampled the flora and fauna and measured the amount of falling carbon material captured to assess the role of the ocean as a true carbon sink.

«It is a good average but it doesn't describe the dynamics of the system where the ocean might be a good carbon sink,» he notes.

Carbon - containing microorganisms began to sink to the bottom of the oceans, where they created carbon - rich rocks.

Here was a gigantic laboratory flask with a whole tropical forest and an ocean inside it — models of what many scientists suspected were the two biggest carbon sinks in the world.

The north Atlantic Ocean is globally important, as it is a sink for atmospheric carbon dioxide, said Eric Achterberg, chief scientist for the research cruise and lead author of the study.

That shift of the coastal ocean from carbon source to sink, quantified for the first time in the Dec. 5, 2013, issue of the journal Nature, suggests coastal areas are a key component of the global carbon budget, the scientists say.

The «land - ocean aquatic continuum», has not previously been considered an important carbon sink.