Sentences with phrase «ocads ocean carbon»

The iron deprivation means that estimates of global ocean carbon uptake are probably 2 to 4 percent too high, the group reports in the August 31 Nature.

University of Georgia Skidaway Institute of Oceanography scientist Aron Stubbins joined a team of researchers to determine how hydrothermal vents influence ocean carbon storage.

MBARI news release on summer experiments Greenhouse - gas research by MBARI oceanographer Peter Brewer Department of Energy research on ocean carbon disposal

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.

«Scientists solve the riddle of deep ocean carbon.»

They incorporated the lifecycle of phytoplankton and zooplankton — small, often microscopic animals at the bottom of the food chain — into a novel mechanistic model for assessing the global ocean carbon export.

Researchers hope to track ocean carbon, acidity, and nutrients with global monitoring network to be in place by 2030

They then analyzed ocean - atmosphere carbon exchange and ocean carbon cycling within their circulation model.

«Controlling air pollution will bring huge benefits to human welfare but it may reduce the amount of nutrients to the surface ocean and, thus, the ocean carbon uptake rate.

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

Such priorities include: 1) establishing an ocean carbon chemistry baseline; 2) establishing ecological baselines; 3) determining species / habitat / community sensitivity to ocean acidification; 4) projecting changes in seawater carbonate chemistry; and 5) identifying potentially synergistic effects of multiple stressors.

Plattner, G. - K., F. Joos, T.F. Stocker, and O. Marchal, 2001: Feedback mechanisms and sensitivities of ocean carbon uptake under global warming.

Understanding the potential consequences of rising ocean carbon levels and related ocean changes for marine life and ecosystems is a high priority for the ocean research community and marine resource management.

As you can see in Figure 1, natural land and ocean carbon remains roughly in balance and have done so for a long time — and we know this because we can measure historic levels of CO2 in the atmosphere both directly (in ice cores) and indirectly (through proxies).

The potential of coastal ocean alkalinization (COA), a carbon dioxide removal (CDR) climate engineering strategy that chemically increases ocean carbon uptake and storage, is investigated with an Earth system model of intermediate complexity.

Continue reading «Comment on «The effects of secular calcium and magnesium concentration changes on the thermodynamics of seawater acid / base chemistry: implications for Eocene and Cretaceous ocean carbon chemistry and buffering» by Hain et al. (2015)»

In contrast to the traditional view of anthropogenic organic carbon export and degradation, we suggest that with the increase of wastewater discharge and treatment rates, wastewater DIC input may play an increasingly more important role in the coastal ocean carbon cycle.

Human - induced changes to carbon fluxes across the land - ocean interface can influence the global carbon cycle, yet the impacts of rapid urbanization and establishment of wastewater treatment plants (WWTPs) on coastal ocean carbon cycles are poorly known.

OceanObs ’99 resulted in an internationally coordinated system for physical climate and ocean carbon observations.

Never mind that this would be easily traceable by ocean carbon chemistry, with low pH water plumes streaming from the ridge crests.

Continue reading «Response to comment by Zeebe and Tyrrell on «the effects of secular calcium and magnesium concentration changes on the thermodynamics of seawater acid / base chemistry: Implications for the Eocene and Cretaceous ocean carbon chemistry and buffering»»

Anyone who insists otherwise (that it comes from the ocean — despite the isotopic evidence, budget and direct measurements of increasing ocean carbon) is living in cloud - cuckoo land.

Everett F Sargent # 12: Ocean carbon storage is ~ 20x land storage, but average ocean sink in a given year is about the same as the average land sink.

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).

Hales» pioneering research in ocean carbon chemistry underlies much of what we know about the role carbon dioxide from fossil fuel emissions plays in changing the chemistry of Northwest seas.

Today, as we pump more CO2 into the atmosphere, slightly more flows from the atmosphere into the ocean, leaving enough to increase the atmospheric CO2 concentration, and increasing the oceans carbon content.

My understanding of this process is that it mostly occurs near coastal upwellings which bring up nutrients from the deep and that it is responsible for a significant fraction of ocean carbon sequestration.

As to the bottom line, we are talking about changes to a fundamental part of the ocean carbon cycle, far outside the range of natural variability, that are irreversible and will last for thousands of years.

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

This is not the first study to show the effect of higher levels of ocean carbon on predator - prey relations.

In the Nature study, a group of 27 marine chemists and biologists from Europe, Japan, Australia, and the United States, combined recently compiled global ocean carbon data with computer models to study potential future changes in the ocean CO2 system.

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

The Kirtland Turner & Ridgwell method has found an empirical relationship between the average ocean carbon isotope excursion, the atmospheric CO2 level, and the duration of the carbon input that generated the climate change.

It combines representations of the global economy, energy systems, agriculture and land use, with representation of terrestrial and ocean carbon cycles, a suite of coupled gas - cycle, climate, and ice - melt models.

Likely impacts include large - scale disintegration of the Greenland and West Antarctic ice - sheet; the extinction of an estimated 15 — 40 per cent of plant and animal species; dangerous ocean acidification; increasing methane release; substantial soil and ocean carbon - cycle feedbacks; and widespread drought and desertification in Africa, Australia, Mediterranean Europe, and the western USA.

Ito, T., A. Bracco, C. Deutsch, H. Frenzel, M. Long, and Y. Takano, 2015: Sustained growth of the Southern Ocean carbon storage in a warming climate.

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.

Half a dozen different kinds of projects fed into Roger Revelle's crucial discovery of low ocean carbon absorption, and a yet wider range of specialized work was indispensable for computer models of the atmosphere.

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

The ocean carbon content and water temperature determines the ocean state.

The regional arrays provide a sampling of ocean conditions around the world that is designed to produce an integrated data set that can be used to address questions related to physical - biogeochemical coupling in eddies, phytoplankton phenology (cyclic and seasonal phenomena), nutrient supply, and climate effects on ocean carbon cycling in selected regions.

Gruber, N., et al. (2010), Towards an integrated observing system for ocean carbon and biogeochemistry at a time of change, in Proceedings of OceanObs» 09: Sustained Ocean Observations and Information for Society, vol.

«(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 OCADS ocean carbon data collection includes discrete and underway measurements from a variety of platforms (including research ships, commercial ships, and buoys).

Technological advances make it possible to deliver ocean carbon data real - time but questions about instrument reliability and data quality limit this practice at this moment.

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?

All ocean carbon data OCADS receives is provided by individual investigators and groups, following initial data review.

Since its inception in 1993 as the Carbon Dioxide Information Analysis Center (CDIAC) Ocean Carbon Data Management Project, OCADS has been organizing, quality assuring, documenting, archiving and disseminating ocean carbon - related data collected via a number of U.S. and international ocean - observing programs.

One may suggest that ocean carbon sequestration can proceed more effectively through the uptake of atmospheric CO2 by intertidal marsh grasses and the subsequent export.

While the historical performance of ocean models can be benchmarked against global inventories of ocean carbon, only recently have equivalently robust global estimates been developed for some components of land carbon storage (Saatchi et al 2011) and soils, the largest reservoir, remains very sparsely sampled.