Sentences with phrase «anthropogenic ghg»

As a consequence, unbridled anthropogenic GHG emissions could affect the oceans» CO2 - uptake capacities and might damage entire marine ecosystems.

Re # 6 - «if one already adopts the skeptic position that climate isn't changing much anyway, then the techno - fix wouldn't be as difficult or costly in their estimation» I think a more appropriate skeptic position is that the climate isn't changing much anyway due to anthropogenic GHG emissions.

Data that indicates previous over-estimation of anthropogenic GHG forcings must have some other explanation.

The fact that some people are attempting to question the anthropogenic GHG attribution range suggests that the statement contains precision within the terms the IAC were discussing.

In what must surely come as a slap to EU nations - which do not take these into account when calculating their emissions targets - the study suggests that shipping emissions will continue their meteoric rise - surging another 30 % by 2020 - joining vehicles, housing and industry as one of the largest single sources of anthropogenic GHG emissions.

In addition to ending anthropogenic GHG emissions as soon as possible — which is to say, on an emergency basis, as close to immediately as possible — we also need to draw down the already dangerous excess of anthropogenic GHGs to preindustrial levels as soon as possible.

Bear in mind that anthropogenic GHG forcing to date is ~ 3 W / m2 and for 95 % confidence that only needs to produce warming of 0.33 degC (> 50 % of 0.65 degC observed) from 1951 - 2010.

In this regard, carbon removal approaches share a common purpose with conventional climate mitigation technologies, which also seek to reduce human influence on the climate system (by reducing future anthropogenic GHG emissions).

BTW you said forcing when you should have said feedback — only anthropogenic GHG's are a forcing.

Your statement in the uncertainty monster paper was in response to AR4, which in contrast to AR5 was about the effect of anthropogenic GHG only (rather than the net anthropogenic effect).

the range of the GHG emission reductions will depend on the following conditions: - Appropriate accounting of the potential of Russia's forestry in frame of contribution in meeting the obligations of the anthropogenic emissions reduction; - Undertaking by all major emitters the legally binding obligations to reduce anthropogenic GHG emissions.

It is about as likely as not that most of the observed increase in global average temperatures since the mid-20th century is due to the observed increase in anthropogenic GHG concentrations.

«Most of the observed increase in global average temperatures since the mid-20th century is very likely due to the observed increase in anthropogenic GHG concentrations.

Most of the observed increase in global average temperatures since the mid-20th century is very likely due to the observed increase in anthropogenic GHG [greenhouse gas] concentrations.

So EPA's «observed increase in global average temperatures since the mid-20th century» has now dropped from 0.702 °C to a «corrected» value of 0.552 °C and 21 % of EPA's increase from «anthropogenic GHG» increases has now vanished, lost to errors in the observed data.

-LSB-...] is very likely due to the observed increase in anthropogenic GHG [greenhouse gas] concentrations» was shown to be wrong.

You did not answer the question of why liquid in a thermometer shows an anomalous change to heating, whereas the oceans so far appear to have not, as expressed by sea level, in a time of alleged record anthropogenic GHG emissions.

According to the IPCC [1], anthropogenic GHG emission must be reduced by 41 -72 per cent by 2050 in order to keep global temperature increase well below 2 degrees Celsius.

After the solar cycles and temp response diverges in the late 70's, it was anthropogenic ghg that drove the warming.

In 2010, the energy supply sector was responsible for 46 % of all energy ‐ related GHG emissions (IEA, 2012b) and 35 % of anthropogenic GHG emissions, up from 22 % in 1970.

• More than 100 % (i.e. GHG warming has been partly offset by aerosol cooling) • Between 76 % and 100 % • Between 51 % and 76 % • Between 26 % and 50 % • Between 0 and 25 % • Less than 0 % (i.e. anthropogenic GHG emissions have caused cooling) • There has been no warming • Unknown due to lack of knowledge • I do not know • Other (please specify)

Total anthropogenic GHG emissions were the highest in human history from 2000 to 2010 and reached 49 (± 4.5) GtCO2eq / yr in 2010.»

Or, alternatively, that all of the heat energy from all of the fossil fuels burned in history is equivalent to anthropogenic GHG warming over about five months of 2013.

«Total anthropogenic GHG emissions have continued to increase over 1970 to 2010 with larger absolute decadal increases toward the end of this period.

Therefore, we argue for inclusion of GHG fluxes from reservoir surfaces in future IPCC budgets and other inventories of anthropogenic GHG emissions.

Certainly, CO2 and other anthropogenic GHG emissions are a potent driver of warming, with water serving in a feedback role due to its short atmospheric lifetime.

This should not be construed as implying that «global warming due to anthropogenic GHG emissions» is the cause of such changes in rainfall or temperature in South America.

There are, however, caveats: (1) multidecadal fluctuations in Arctic — subarctic climate and sea ice appear most pronounced in the Atlantic sector, such that the pan-Arctic signal may be substantially smaller [e.g., Polyakov et al., 2003; Mahajan et al., 2011]; (2) the sea - ice records synthesized here represent primarily the cold season (winter — spring), whereas the satellite record clearly shows losses primarily in summer, suggesting that other processes and feedback are important; (3) observations show that while recent sea - ice losses in winter are most pronounced in the Greenland and Barents Seas, the largest reductions in summer are remote from the Atlantic, e.g., Beaufort, Chukchi, and Siberian seas (National Snow and Ice Data Center, 2012, http://nsidc.org/Arcticseaicenews/); and (4) the recent reductions in sea ice should not be considered merely the latest in a sequence of AMOrelated multidecadal fluctuations but rather the first one to be superposed upon an anthropogenic GHG warming background signal that is emerging strongly in the Arctic [Kaufmann et al., 2009; Serreze et al., 2009].

Anthropogenic GHG are primary driver.

«The total of the costs of anthropogenic GHG emissions exceeds the value of treating such emissions as free.»

This decision defined small - scale afforestation or reforestation project activities as those that are expected to result in net anthropogenic GHG removals by sinks of less than 8 kilotonnes of carbon dioxide per year.

As discussed later in this paper, the construction of CO2 snow deposition plants that are supported by wind farms, offer the opportunity for unique international expertise to join forces to develop the CO2 sequestration facilities that can substantially curtail the effects of anthropogenic GHG warming.

The inclusion of climate — GHG feedbacks due to changes in the natural carbon sinks has the advantage of more directly linking anthropogenic GHG emissions with the ensuing global temperature increase, thus providing a truer indication of the climate sensitivity to human perturbations.

How stable is the atmosphere at present under a total anthropogenic GHG forcing — since 1750AD — of 1.6 Watt / m2 (Figure SPM - 2 in the IPCC «Climate Change 2007: The Physical Science Basis»)?

Take this year's floods on the Mississippi River, anthropogenic GHG's must be responsible even though the carrying capacity of saturated air for water rises only 7 % per degC or 2.5 - 5.0 %.

Anthropogenic GHG warming is about the Earth's energy balance, and thus, looking at an average global near - surface temperature, or the total ocean heat content can tell us something useful about that energy balance.

He has continually stated that no evidence for CO2 as a anthropogenic GHG exists, but now says:

Max, you write «I have simply shown that — even using the premise of a past anthropogenic GHG signal as estimated by IPCC or several independent solar studies — the observed 2xCO2 temperature response is only around 1 deg C (i.e. nothing to worry about).»

I have simply shown that — even using the premise of a past anthropogenic GHG signal as estimated by IPCC or several independent solar studies — the observed 2xCO2 temperature response is only around 1 deg C (i.e. nothing to worry about).

That means that the (positive) response to GHGs must be lower than currently implemented in the models (the direct effect — without feedbacks — of anthropogenic GHG forcing is currently ~ 0.3 K).

I would just add that the bottom line of ALL these speculative looks at the various potential «nasty surprises» that may be in store, is to simply reinforce the urgency of rapidly phasing out ALL anthropogenic GHG emissions as quickly as possible.

And, since worry by itself accomplishes exactly nothing, aren't the policy actions mostly the same — ie., mitigating all anthropogenic GHG emissions, beginning with the most amenable and working toward the more obdurate?

No, scientific inquiry and results published in peer - reviewed scientific literature have shown the recent global warming is primarily due to anthropogenic GHG emissions.

Warming driven by direct anthropogenic GHG emissions causes «natural» methane and carbon emissions, e.g. from thawing permafrost

The NCAR CSM 1.4 was driven by the radiative forcings (volcanic + solar natural and anthropogenic ghg + aerosol) developed in Ammann et al (2007).

BACK TO TOPIC: If CO2 & CH4 are important forcings in a linear GW scenario, then in a «runaway» GW scenario of the warming triggering further mechanisms of warming, triggering further mechanisms, our anthropogenic GHG emissions have even more ultimate impact.

Anthropogenic GHG's in the troposphere insulate stratospere by absorbing more and more infrared radiation.

All of those items you listed may or may not be related to global warming, which may or may not be significantly enhanced due to anthropogenic GHG emissions.

We still need to end ALL anthropogenic GHG emissions as soon as possible — AND we need to beging drawing down the excess CO2 that we have already put into the atmosphere.

FYI, this paper is already being widely cited on blogs by global warming deniers as proof that all of the climate models are wrong, wrong, wrong and that the whole concept of anthropogenic GHG - caused warming has been refuted.