Sentences with phrase «oceanic co2»

He used Exxon's tanker records again in 2009, in an updated study that compiled 30 years of oceanic CO2 data from dozens of reports.

But because of the change in flows, oceanic CO2 start to accumulate in the atmosphere.

I have tried a little test at my terrestrial ecology section (I'm a biologist), and every single student I have asked who were just passingly familiar with the carbon cycle, sources and sinks and basic isotopic facts, has immediately been able to point out the obvious weaknesses (e.g. «if the atmospheric CO2 rise came from oceanic outgassing, then why has oceanic CO2 risen too»?).

That didn't keep it from being included in many proposed economic «market mechanisms» — despite the fact that this would do nothing to reduce the conversion of geological carbon deposits into atmospheric & oceanic CO2.

So burning all the fossil fuel we can reach could increase the oceanic CO2 content by about 10 %.

1 degr.C means an increase of 16 microatm in oceanic CO2 pressure, which should push more CO2 out of the oceans and less into the sinks.

Are you claiming that the oceanic CO2 concentration increased?

Until we can see Selby's slides, Tom V. Segalstad presented similar material from earlier sources: Carbon isotope mass balance modelling of atmospheric vs. oceanic CO2 Tom V. Segalstad, Heartland Institute ICCC 2009

That extra CO2 then in the air feeds back into the cooler oceanic sinks to increase total oceanic CO2 despite the reduced absorption in the warmer areas.

It might reflect, at least in part, a natural source - sink pattern of oceanic CO2 fluxes (Keeling et al., 1989; Broecker and Peng, 1992).

Estimates of projected future atmospheric and oceanic CO2 concentrations indicate that, by the end of this century, the average surface ocean pH could be 0.2 to 0.4 lower than it is today.

Additionally a serious cooling period from natural causes is likely to increase oceanic CO2 absorption and so dampen down any CO2 effect in the subsequent natural upturn although the length of lag is uncertain and may be as long as 800 years.

Water now returning to the surface having entered deep ocean during the MWP may be inducing release of oceanic CO2 in response to altered pH, and this release could be expected to provide the steady increase in atmospheric CO2 concentration (of at least 1.5 ppm / year) that is observed to be independent of temperature variations.

BTW, this is another reason to eliminate oceanic CO2 outgassing from warming as a source of atmospheric changes, this (expected eventually) effect also takes centuries.

With atmospheric and oceanic CO2 levels rising and the consequent acidification of the oceans, marine life has to adapt rapidly if they want to stay around.

Fig 2: Annual variations in atmospheric CO2, oceanic CO2, and ocean surface pH. Strong trend lines for rising CO2 and falling pH.

By analyzing these proxies, concentrations of atmospheric CO2, oceanic CO2, forest fires, aridity, measurements of sea level and more can be deciphered.

Fossil fuel consumption rates will slowly diminish over the coming decades as fossil fuels are gradually depleted, and the resultant atmospheric and oceanic CO2 is predicted by IPCC modelers to END glaciation cycles and thus, to open much of Canada and Siberia to greatly improved agriculture and forestry.

Many of these studies support the hypothesis that coral reefs will suffer from increased oceanic CO2 uptake.

As an aside the oceanic CO2 seems to be very uneven.

For example: could different oceanic circulation rates change the oceanic CO2 sink / source behaviour, or could different atmospheric conditions change the mixing rates of atmospheric gases hence modify their affect on the solar forcing?

Melting permafrost outgasses CO2 and methane, and the decrease in sea ice allows oceanic CO2 to mix back into the atmosphere; taken together, these processes greatly amplify the effect of increased sunlight, driving a relatively rapid exodus from the ice age.

[8]-RRB-, it is inferred that as much as 7.5 % of global oceanic CO2 uptake may occur in the Arctic Ocean, which comprises only 3.9 % of the global ocean's surface.

In the case of warming caused by a disproportionate increase in atmospheric CO2 (compared with oceanic CO2), an increase in temperatures only slows down the rate at which CO2 is absorbed by the oceans.

Ongoing measurements of anthropogenic CO2, other gases and hydrographic parameters in these key marginal seas will provide information on changes in global oceanic CO2 uptake associated with the predicted increasing atmospheric CO2 and future global climate change.

«The atmospheric and oceanic CO2 increase is being driven by the burning of fossil fuels,» says Pieter Tans, a senior scientist at the National Oceanic and Atmospheric Administration's Earth System Research Laboratory, who leads the U.S. government effort to monitor global greenhouse gas levels.

«As the circulation changed from decade to decade — 1980s to 1990s to 2000s — the model predicted a big dip in oceanic CO2 uptake during the 1990s, then a large increase in uptake during the 2000s,» DeVries explained.

The cause of this recent increase in oceanic CO2 uptake, which has implications for climate change, has been a mystery.

Not exact matches

University of Rhode Island Estimates of contemporary global air - sea carbon dioxide (CO2) flux (Takahashi et al. 2009; Landschützer et al. 2014) suggest that subtropical western boundary currents (WBCs) and their zonal extensions are key regions of oceanic carbon uptake (Figure 1a).

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).

Most explanations propose changes in oceanic processes as the cause for low glacial CO2 concentrations.

«Based on our observations in the sea - surface microlayer, we think that this could be very important as it may imply a positive feedback on atmospheric CO2 from oceanic sources, that is, from microbial metabolism at the air - sea interface.»

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

Alexeev, V.A., 2003: Sensitivity to CO2 doubling of an atmospheric GCM coupled to an oceanic mixed layer: a linear analysis.

Dygert said that the new results suggest that circulation of water beneath mid-ocean ridges is effectively limited to the crustal section, and that enormous sections of the mantle could be available beneath the oceanic crust to efficiently trap CO2.

And as both researchers made clear, neither idea addresses the rising levels of carbon dioxide (CO2) in the atmosphere that is primarily to blamefor global warming and higher levels of oceanic acid.

It's also important for the oceanic and atmospheric CO2 balance.

While Methane and Nitrous oxide gases are more short lived, Co2 is long lived in the atmosphere, so stopping some of the gases will not eliminate the long term forcing on the oceanic thermal absorption.

When the oceans begin to slow the rate of CO2 uptake at saturation point that will futher push atmospheric CO2 even higher, simultaneously the massive amounts of additional CO2 and methane and nitrous oxide etc released from the decay and oxidisation of oceanic living creatures who can not survive in a low ph environment will future ram the nail in the coffin.

There is no reason to expect a trend reversal (unless you have some new data and modeling you would like to share (that has made it through peer review and peer response and survived)-RRB- to to the amount of forcing in the system, the lifetime of Co2 in the atmosphere, the human industrial output and the oceanic thermal inertia and lag time for absorption.

Warming of the oceans leads to increased vertical stratification (decreased mixing between the different levels in the oceans), which would reduce CO2 uptake, in effect, reducing the oceanic volume available to CO2 absorption from the atmosphere.

Secondly the total atmospheric CO2 reservoir is negligable compared to the oceanic reservoir (730 GtC vs 38000 GtC) in first order diffusion effects.

An accounting of the observed increase in oceanic and atmospheric CO2 and an outlook for the Future.

And we know for sure that a lot more is going to affect temperature and thus the blossoms than just CO2 — atmospheric and oceanic circulation patterns will clearly have a big effect from year to year.

The diverse pattern of poorly understood biotic responses to ocean acidification found thus far makes it problematic to reliably predict the ecological and biogeochemical changes that will result from continued oceanic uptake of anthropogenic CO2.

If so, I think we want to include tightly coupled chemical and biological processes, in that case — for example, the chemical fate of atmospheric methane over time, the effects of increasing atmospheric CO2 on oceanic acid - base chemistry, and the response of the biological components of the carbon cycle to increased temperatures and a changing hydrologic cycle.

They should have realised that top down high solar activity combined with bottom up positive oceanic influences would in combination be enough to produce the late 20th century warming without having to invoke a significant effect from more CO2.

It is too early to be sure but that needs watching because it may reveal a stronger than expected correlation with oceanic temperatures rather than human output of CO2.

It is clearly established that climate variability affects the oceanic content of natural and anthropogenic DIC and the air - sea flux of CO2, although the amplitude and physical processes responsible for the changes are less well known.

Even the water vapour effect has never provoked any tipping point in the face of the primary solar / oceanic driver so CO2 could never do so.