Sentences with phrase «ocean uptake of»

Ocean uptake of CO2, resulting from increasing atmospheric CO2 concentrations, reduces surface ocean pH and carbonate ion concentrations, an impact that was overlooked in the TAR.

E.g., given that the net radiative balance at the top of the atmosphere remains negative, which certainly indicates continued warming, Trenberth's studies suggest deep ocean uptake of most of the recent heating.

However, the ocean uptake of heat would also act to «bank» the heat, accumulating it through the spike period, prolonging the recovery of surface temperature beyond the demise of the methane spike itself.

Ocean uptake of CO2 slows the rate of anthropogenic climate change but comes at the cost of ocean acidification.

Here is their difficulty: If they invoke the deep ocean uptake of heat (without proof) this looks like handwaving but also means that the time to equilibrium could be very long such that the next 100 years is governed by the transient sensitivity not the equilibrium value.

However, current understanding suggests that, unless substantial ocean circulation changes occur, plankton growth remains roughly unchanged because it is limited mostly by environmental factors, such as nutrients and light, and not by the availability of inorganic carbon it does not contribute significantly to the ocean uptake of anthropogenic CO2.

If the tropics temperature reduced by 1C and the Antarctic remained the same of reduced somewhat less, ocean uptake of CO2 would increase by ~ 10 PPM initially for some unit of time until it eached some equilibrium.

«In our mor recent global model simulations the ocean heat - uptake is slower than previously estimated, the ocean uptake of carbon is weaker, feedbacks from the land system as temperature rises are stronger, cumulative emissions of greenhouse gases over the century are higher, and offsetting cooling from aerosol emissions is lower.

Air Pollution and Materials • Increased acid deposition • Increased photochemical smog • Degradation of outdoor paints and plastics Fig, p. 488 Global Warming • Accelerated warming because of decreased ocean uptake of CO2 from atmosphere by phytoplankton and CFCs acting as greenhouse gases

• Accelerated warming because of decreased ocean uptake of CO2 from atmosphere by phytoplankton and CFCs acting as greenhouse gases

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.

Cumulative land and ocean uptake of carbon for the period 1850 - 2005.

Maybe if we had kept on talking about adding carbonic acid to the air (instead of using the modern vocabulary whereby we add carbon dioxide to the air), we would have been talking all along about ocean uptake of carbonic acid and ocean acidification would have been an obvious consequence.

This too is questionable, as there are reasons to think the ocean uptake of heat varies at different time scales and may be influenced by ENSO, the Pacific Decadal Oscillation (PDO), and the Atlantic Multi-decadal Oscillation (AMO).

As to ocean uptake of heat, the novice might ask, «how come that didn't happen so obviously a in the past?

In these experiments the climate sensitivity was 2.7 deg C for a doubling of CO2, the net aerosol forcing from 1940 to 2000 was around -0.7 W / m2 (55 % of the total forcing, -1.27, from 1850 to 2000), and the ocean uptake of heat was well - matched to recent observations.

[Response: I'm sure Eric won't mind me stepping in with some questions for you instead — 1) why do you keep insinuating that terrestrial and ocean uptake of anthropogenic CO2 is somehow not accepted by mainstream scientists?

The centre runs research programmes in climate variability and change, the monitoring of sea levels, ocean uptake of carbon dioxide, and Antarctic marine ecosystems.

Not exact matches

The researchers were able to test their hypothesis that stronger winds were driving the ocean heat uptake by putting the observations of wind behavior into climate models.

«No one would ever have predicted from first principles that increasing CFCs would have the effect of decreasing uptake of ocean CO2,» says Andrew Watson of the University of East Anglia, UK.

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.

This was due to a combination of factors: a less active sun, higher levels of cooling aerosols from volcanoes and Asian factories, and increased heat uptake by the oceans.

Dr. Houghton and colleagues conclude that the greater certainty in atmospheric carbon measurements has led to an increased certainty in the calculated rate of carbon uptake by land and oceans.

Upper - ocean processes dissipate heat, transport nutrients and impact the uptake of carbon dioxide — making circulation a critical driver of biological activity in the ocean.

Ocean acidification, another change caused by the oceans» uptake of carbon dioxide, also hurts corals.

The model also accounted for natural drivers of change, including the direct influence of increased carbon dioxide on ocean - carbon uptake and the indirect effect that a changing climate has on the physical state of the ocean and its relationship to atmospheric carbon dioxide.

However, this new analysis reveals that the northern North Atlantic, the Southern Ocean and Equatorial Pacific Ocean are all important regions of ocean heat upOcean and Equatorial Pacific Ocean are all important regions of ocean heat upOcean are all important regions of ocean heat upocean heat uptake.

The uptake of fossil fuel carbon dioxide (CO2) by the ocean increases seawater acidity and causes a decline in carbonate ion concentrations.

«Uptake of iron by diatoms is significant compared to what Mother Nature is able to naturally add to the ocean,» he said.

The foaming agent could interfere with ocean ecologies or inhibit the uptake of carbon dioxide by the ocean — effectively negating one of the major ways that the world's oceans fight global warming naturally.

These variations originate primarily from fluctuations in carbon uptake by land ecosystems driven by the natural variability of the climate system, rather than by oceans or from changes in the levels of human - made carbon emissions.

Researchers have long known the region is crucial in the uptake of atmospheric CO2 and that biological processes in the Southern Ocean influence the global ocean system via northward flowing currOcean influence the global ocean system via northward flowing currocean system via northward flowing currents.

This is an important advance because nutrient uptake is a central property of ocean biogeochemistry, and in many regions controls carbon dioxide fixation, which ultimately can play a role in mitigating climate change.

To address the knowledge gap about the globally - relevant ecosystem process of nutrient uptake, researchers worked to identify how different levels of microbial biodiversity influenced in situ phosphorus uptake in the Western Subtropical North Atlantic Ocean.

«A limit to the availability of iron in this region means that the ocean is less efficient in its uptake of atmospheric carbon dioxide,» he said.

«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.

Not considering the change in net uptake of carbon by the ocean, you can put the following numbers on that (based on Ramanathan and Feng, 2009):

As the uptake of carbon dioxide has increased in the last century, so has the acidity of oceans worldwide.

An increased uptake of carbon by the oceans (in the hypothetical situation of stopping all emissions immediately) is not likely to cancel the «unmasked» greenhouse warming in addition to canceling the «committed» ocean warming.

For the change in annual mean surface air temperature in the various cases, the model experiments show the familiar pattern documented in the SAR with a maximum warming in the high latitudes of the Northern Hemisphere and a minimum in the Southern Ocean (due to ocean heat uptakOcean (due to ocean heat uptakocean heat uptake)(2)

That's a process playing out throughout the Southern Ocean, but scientists don't have a good grasp on it or how sudden changes like the loss of a huge hunk of ice will alter carbon uptake.

Abstract: Ocean acidification refers to the lowering of the ocean's pH due to the uptake of anthropogenic CO2 from the atmospOcean acidification refers to the lowering of the ocean's pH due to the uptake of anthropogenic CO2 from the atmospocean's pH due to the uptake of anthropogenic CO2 from the atmosphere.

These rising atmospheric greenhouse gas concentrations have led to an increase in global average temperatures of ~ 0.2 °C decade — 1, much of which has been absorbed by the oceans, whilst the oceanic uptake of atmospheric CO2 has led to major changes in surface ocean pH (Levitus et al., 2000, 2005; Feely et al., 2008; Hoegh - Guldberg and Bruno, 2010; Mora et al., 2013; Roemmich et al., 2015).

Almost everybody agrees that it has to do with fluctuations in the carbon uptake by the oceans, with a number of theories relying on enhancement of the biological pump, much along the lines you suggest.

Changing living conditions caused by climate change or ocean acidification — the decrease of ocean pH due to the uptake of human - induced carbon dioxide from the atmosphere — pose serious threats to marine organisms.

Injection of a large amount of surface freshwater in either hemisphere has a notable impact on heat uptake by the ocean and the internal ocean heat distribution (Fig. 12).

«We have to consider there are two sides of the coin: On the one hand, the uptake of carbon dioxide moderates climate change but, on the other hand, it affects life in the ocean — with consequences for economy and society.»

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.

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

The oceanic uptake of anthropogenic CO2 leads to a gradual acidification of the ocean.