Sentences with phrase «ocean carbon chemistry»

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.

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»»

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

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)»

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.

Not exact matches

The chemistry of the ocean is also affected, as the increased concentrations of atmospheric carbon dioxide will cause the ocean to become more acidic.

By looking at the chemistry of rocks deposited during that time period, specifically coupled carbon and sulfur isotope data, a research team led by University of California, Riverside biogeochemists reports that oxygen - free and hydrogen sulfide - rich waters extended across roughly five percent of the global ocean during this major climatic perturbation — far more than the modern ocean's 0.1 percent but much less than previous estimates for this event.

Titan has diverse, carbon - rich chemistry on a surface dominated by water ice, as well as an interior ocean.

Measuring pH lets us monitor the carbon cycle, which underpins the basic chemistry of the ocean and generation of oxygen in the air.

«This study shows for the first time that the oxidation of hydrogen sulfide and ammonia from the bottom waters could be a major contributor to lower pH in coastal oceans and may lead to more rapid acidification in coastal waters compared to the open ocean,» said Cai, the paper's lead author and an expert in marine chemistry and carbon's movement through coastal waters.

The finding suggests that sea life is already being affected by changes in the ocean's chemistry caused by rising carbon dioxide levels.

Determine status and spatial / temporal patterns in carbon chemistry, assessing the generality of response to ocean acidification.

«The other carbon dioxide problem», «the evil twin of global warming», or part of a «deadly trio», together with increasing temperatures and loss of oxygen: Many names have been coined to describe the problem of ocean acidification — a change in the ocean chemistry that occurs when carbon dioxide (CO2) from the atmosphere dissolves in seawater.

Increased carbon dioxide in the atmosphere not only alters the ocean's chemistry, it's increasing the temperature of the atmosphere and warming waters, too.

ref Such changes in the carbon chemistry of the open ocean probably have not occurred for more than 20 million years.

Oceanic uptake of anthropogenic carbon dioxide (CO2) causes pronounced shifts in marine carbonate chemistry and a decrease in seawater pH. Increasing evidence indicates that these changes — summarized by the term ocean acidification (OA)-- can significantly affect marine food webs and biogeochemical cycles.

The growing amounts of carbon dioxide that human activities add to the air have begun changing the chemistry of the oceans.

Increased levels of atmospheric carbon dioxide could also significantly alter ocean temperatures and chemistry over the next century, which could lead to increased and more severe mass bleaching and other stressors on coral reefs.

Collectively, these observations can be used to project trends of ocean acidification in higher latitude marine surface waters where inorganic carbon chemistry is largely influenced by sea ice meltwater.

This Bern model incorporates non-linear ocean chemistry feedbacks and CO2 fertilization of the terrestrial biosphere, but it omits climate - carbon feedbacks, e.g., assuming static global climate and ocean circulation.

The carbon dioxide buildup is changing the chemistry of surface seawater, lowering its pH in a way that, in theory, could be harmful to the shell - forming and reef - forming marine organisms of today's ocean ecosystem.

The review, which is being published in the journal Science on Friday, concludes that the human - driven buildup of carbon dioxide under way now appears to be far outpacing past natural events, meaning that, for ocean chemistry particularly, the biological implications are potentially enormous — and laden with the kind of uncertainty that is hard to see as a source of comfort.

On a multi-century time - scale, results of simple models based on well - known carbon chemistry show that the ocean should take up 70 - 80 % of all the anthropogenic CO2 emitted to the atmosphere (22).

This is followed by the authors» conclusion that while simple models (which consider only carbon chemistry) predict that the ocean will take up 70 - 80 % of the carbon dioxide we emit, the long - equilibrium will quite possibly be considerably higher than those models would suggest — given the changes to ocean circulation.

The ocean model I used does carbon chemistry, with plankton and gas exchange and all that.

The most indirect impact of all is coming through the global buildup of carbon dioxide and other greenhouse gases, which are altering the climate and ocean chemistry with long - lasting repercussions.

Climate change, rising atmospheric carbon dioxide, excess nutrient inputs, and pollution in its many forms are fundamentally altering the chemistry of the ocean, often on a global scale and, in some cases, at rates greatly exceeding those in the historical and recent geological record.

It's been enough to raise the levels of the ocean — and the extra carbon in the atmosphere has also changed the chemistry of that seawater, making it more acidic and beginning to threaten the base of the marine food chain.

The ocean uptake of excess atmospheric carbon dioxide, the excess above preindustrial levels driven by human emissions, causes well - understood and substantial changes in seawater chemistry that can affect marine organisms and ecosystems.

Additional carbon dioxide uptake causes direct changes in seawater acid - base and inorganic carbon chemistry in a process termed ocean acidification.

Global upper - ocean chemistry trends driven by human carbon dioxide emissions are more rapid than variations in the geological past.

Combining that with theoretical knowledge on ocean chemistry and on known sources of carbon from burning fossil fuels and other human activities is enough to give a clear picture on main trends.

The audience for whom this piece is intended consists of people who know some chemistry and are uncertain about how to consider the often made claim by deniers that the oceans contain so much dissolved carbon that human production is inconsequential.

Although the technologies are still nascent, the idea that humans might help remove carbon from the skies as well as put it there is a reasonable Anthropocene expectation; it wouldn't stop climate change any time soon, but it might shorten its lease, and reduce the changes in ocean chemistry that excess carbon brings about.

The policy problem is a chain of numbers, each of which can be assigned a clear, unambiguous, unmetaphysical estimated probability distribution: the emissions trajectory, the carbon cycle feedbacks, the climate response, the ocean chemistry response, the ice sheet response, the impacts, these are all quantitative.

Excess carbon dioxide in the atmosphere — in addition to contributing to climate change — is absorbed by the ocean, making sea water more acidic and leading to a suite of changes in ocean chemistry.

But the change in carbon chemistry of the ocean and ultimately the atmosphere need to be transparently documented, also, if we are to trade carbon offsets based on iron fertilization.

CO2 emissions cause ocean acidification, threaten sea life CO2 emissions cause ocean acidification, threaten sea life mongabay.com September 21, 2007 Human - induced carbon dioxide (CO2) emissions could alter ocean chemistry to...

The result of putting more carbon into the atmosphere than can be taken out of it is a warmer climate, a melting Arctic, higher sea levels, improvements in the photosynthetic efficiency of many plants, an intensification of the hydrologic cycle of evaporation and precipitation, and new ocean chemistry.

And the changes in ocean chemistry are the sort of thing that can be expected to have a direct effect on the geological record if carbon levels rise far enough.

This Bern model incorporates non-linear ocean chemistry feedbacks and CO2 fertilization of the terrestrial biosphere, but it omits climate - carbon feedbacks, e.g., assuming static global climate and ocean circulation.

The changing temperature and chemistry of the Arctic Ocean and Bering Sea are likely changing their role in global ocean circulation and as carbon sinks for atmospheric CO2 respectively, although the importance of these changes in the global carbon budget remains unresoOcean and Bering Sea are likely changing their role in global ocean circulation and as carbon sinks for atmospheric CO2 respectively, although the importance of these changes in the global carbon budget remains unresoocean circulation and as carbon sinks for atmospheric CO2 respectively, although the importance of these changes in the global carbon budget remains unresolved.

Rising levels of carbon dioxide in Earth's atmosphere will cause significant changes to ocean temperatures and chemistry over the next 100 years, thereby increasing the frequency and severity of mass bleaching and other stresses on coral reefs and reef systems, scientists say.

As our ocean chemistry continues to change, we will educate decision makers about ocean acidification and encourage the planting Ocean Friendly Gardens to create «living soils» that trap carbon and reduce nutrient ruocean chemistry continues to change, we will educate decision makers about ocean acidification and encourage the planting Ocean Friendly Gardens to create «living soils» that trap carbon and reduce nutrient ruocean acidification and encourage the planting Ocean Friendly Gardens to create «living soils» that trap carbon and reduce nutrient ruOcean Friendly Gardens to create «living soils» that trap carbon and reduce nutrient runoff.

In their statement, the scientific academies say the oceans have absorbed about a quarter of the carbon dioxide emitted to the atmosphere by human activities since the industrial revolution, resulting in rapid and irreversible changes in ocean chemistry.

But the chemistry is at least somewhat predictable, and scientists are reasonably confident the oceans will continue absorbing carbon for many decades.

The science of ocean chemistry tells us much more about carbon in the atmosphere and water.

Called ModelE, it provides the ability to simulate many different configurations of Earth System Models — including interactive atmospheric chemistry, aerosols, carbon cycle and other tracers, as well as the standard atmosphere, ocean, sea ice and land surface components.

Warming of sea surface temperatures and alteration of ocean chemistry associated with anthropogenic increases in atmospheric carbon dioxide will have profound consequences for a broad range of species, but the potential for seasonal variation to modify species and ecosystem responses to these stressors has received little attention.

Read / Purchase the Report Ocean Acidification: A National Strategy to Meet the Challenges of A Changing Ocean (2010) Excess carbon dioxide in the atmosphere — in addition to contributing to climate change — is absorbed by the ocean, making sea water more acidic and leading to a suite of changes in ocean chemiOcean Acidification: A National Strategy to Meet the Challenges of A Changing Ocean (2010) Excess carbon dioxide in the atmosphere — in addition to contributing to climate change — is absorbed by the ocean, making sea water more acidic and leading to a suite of changes in ocean chemiOcean (2010) Excess carbon dioxide in the atmosphere — in addition to contributing to climate change — is absorbed by the ocean, making sea water more acidic and leading to a suite of changes in ocean chemiocean, making sea water more acidic and leading to a suite of changes in ocean chemiocean chemistry.