Sentences with phrase «increased by anthropogenic emissions»

Not exact matches

They found that anthropogenic greenhouse gas emissions increased the risk of the once - a-century wet January in 2014 by 43 % (uncertainty range: 0 - 160 %).

Anthropogenic CO2 emissions are presently increasing every year at an accelerating rate, and it is extremely unlikely that humanity will collectively do what is necessary to not only stop that growth in CO2 emissions, but reverse it, and then reduce emissions by 80 percent or more within 5 to 10 years, which is what mainstream climate scientists say is needed to avoid the worst outcomes of anthropogenic glAnthropogenic CO2 emissions are presently increasing every year at an accelerating rate, and it is extremely unlikely that humanity will collectively do what is necessary to not only stop that growth in CO2 emissions, but reverse it, and then reduce emissions by 80 percent or more within 5 to 10 years, which is what mainstream climate scientists say is needed to avoid the worst outcomes of anthropogenic glanthropogenic global warming.

Empirical data for the CO2 «airborne fraction», the ratio of observed atmospheric CO2 increase divided by fossil fuel CO2 emissions, show that almost half of the emissions is being taken up by surface (terrestrial and ocean) carbon reservoirs [187], despite a substantial but poorly measured contribution of anthropogenic land use (deforestation and agriculture) to airborne CO2 [179], [216].

2011) of the present atmospheric methane burden by 2100, or a 50 % increase fifty years primarily due to increase emissions from marshlands and conventional anthropogenic sources.

The precise magnitude of the anthropogenic contribution remains uncertain, but in nine out of ten cases our model results indicate that twentieth - century anthropogenic greenhouse gas emissions increased the risk of floods occurring in England and Wales in autumn 2000 by more than 20 %, and in two out of three cases by more than 90 %.

Scaling Walter's Arctic lake emission rates up by a factor of 100 would increase the overall emission rate, natural and anthropogenic, by about a factor of 5 from where it is today.

-- Upper - tropospheric moistening in response to anthropogenic warming — Increases in greenhouse forcing inferred from the outgoing longwave radiation spectra of the Earth in 1970 and 1997 — On the Atmospheric Residence Time of Anthropogenically Sourced Carbon Dioxide — Deep Carbon Emissions from Volcanoes «it is clear that these natural emissions were recently dwarfed by anthropogenic emissioEmissions from Volcanoes «it is clear that these natural emissions were recently dwarfed by anthropogenic emissioemissions were recently dwarfed by anthropogenic emissionsemissions»

The Royal Society report includes references to Clark et al, 2016 in Nature Climate Change, suggesting the final sea level rise on millennia timescale caused by anthropogenic climate change (partly depending on future emissions) lies in a range between 29 to 55 metres and to DeConto & Pollard, 2016 in Nature, a study suggesting hydro - fracturing and ice cliff collapse around Antarctic ice sheets increases high end projection for sea level rise by 2100 to ± 2 metres.

The change to the 12C: 13C isotope ratio of atmospheric CO2 is in the direction expected if the recent increase in atmospheric CO2 concentration were caused by the anthropogenic emission of CO2.

If the anthropogenic forcing wouldn't keep increasing anymore (because we would manage to suddenly reduce CO2 emission to a level that merely compensates upkeep by sinks, somehow, and the atmospheric concentration would remain constant) then surface temperature would slowly rise until the TOA balance is restored (and then rise some more as slow feedbacks kick in).

Richard S Courtney (00:08:00): The change to the 12C: 13C isotope ratio of atmospheric CO2 is in the direction expected if the recent increase in atmospheric CO2 concentration were caused by the anthropogenic emission of CO2.

By «committed» or «locked in» warming or sea level in a given year, we refer to the long - term effects of cumulative anthropogenic carbon emissions through that year: the sustained temperature increase or SLR that will ensue on a time scale of centuries to millennia in the absence of massive and prolonged future active carbon removal from the atmosphere.

Polititicians, all over the world, have been made believe, that the recent increase of CO2 content in atmosphere is dominated by anthropogenic CO2 emissions caused by burning fossile fuels, and that the recent global warming is mainly attributed to the recent increase of CO2 content in atmosphere.

One of the problems with the EPA's Endangerment TSD is the nearly complete disregard of observed trends in a wide array of measures which by and large show that despite decades of increasing anthropogenic greenhouse gas emissions the U.S. population does not seem to have been adversely affected by any vulnerabilities, risks, and impacts that may have arisen (to the extent that any at all have actually occurred as the result of any human - induced climate changes).

Is the argument that CO2 levels relate to temperature, and in fact if there were no human emissions then the «environment» would not be a sink and in fact would be a source... as the atmospheric concs are driven by temps and it is just a coincidence that the anthropogenic emissions are greater than the increase in atmospheric concentrations?

C: increase in atmospheric CO2 from pre-industrial to present is anthropogenic (D / A) S: best guess for likely climate sensitivity (NUM) s: 2 - sigma range of S (NUM) a: ocean acidification will be a problem (D / A) L: expected sea level rise by 2100 in cm (all contributions)(NUM) B: climate change will be beneficial (D / A) R: CO2 emissions need to be reduced drastically by 2050 (D / A) T: technical advances will take care of any problems (D / A) r: the 20th century global temperature record is reliable (D / A) H: over the last 1000 years global temperature was hockey stick shaped (D / A) D: data has been intentionally distorted by scientist to support the idea of anthropogenic climate change (D / A) g: the CRU - mails are important for the science (D / A) G: the CRU - mails are important otherwise (D / A)

«Anthropogenic greenhouse gas emissions have increased since the pre-industrial era, driven largely by economic and population growth, and are now higher than ever,» the IPCC reported in 2014.

Global anthropogenic N2O emissions are rapidly increasing and are expected to almost double by 2050 unless mitigation action is accelerated.

One of the dangers identified by the report is a reduction in calcification of coral and other marine organisms as a result of anthropogenic climate change and in particular increased CO2 emissions.

A (1) Close to or over 100 % (110 %) of the warming since 1950 has been caused by increases in anthropogenic CO2 emissions, leaving natural attribution at something close to 0 %.

Increase of CO2 concentration and their effects this century are an underestimation because they can not — and do not — accurately reflect the effects of feedbacks initiated by anthropogenic emissions.

IPCC scientists assume all the increase of CO2 in atmosphere, during the industrialized time, to be caused by anthropogenic CO2 emissions.

Since the annual atmospheric CO2 growth will decrease with the cooling, consensus will be forced to rethink the «all of the CO2 increase is caused by anthropogenic emissions» hypothesis.

Empirical data for the CO2 «airborne fraction», the ratio of observed atmospheric CO2 increase divided by fossil fuel CO2 emissions, show that almost half of the emissions is being taken up by surface (terrestrial and ocean) carbon reservoirs [187], despite a substantial but poorly measured contribution of anthropogenic land use (deforestation and agriculture) to airborne CO2 [179], [216].

In a recent article, we call this anthropogenic drought, which is water stress caused or intensified by human activities, including increased demand, outdated water management, climate change from anthropogenic greenhouse gas emissions, growing energy and food production, intensive irrigation, diminished supplies, and land use change.

The question I have is — What would cause such a similar phenomenon to the world's current rise in global temperatures and their subsequent destabilization of Anarctic sea ice caused by the increase of CO2 emissions due to anthropogenic interference 14,500 years ago?

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.

For scenarios in which the CH4 abundance doubles and anthropogenic CO and NOx emissions triple, the tropospheric O3 abundance is predicted to increase by an additional 50 % above today s abundance.

Perfluorocarbon (PFC) e.g., CF4 (perfluoromethane) appears to have a natural background; however, current anthropogenic emissions exceed natural ones by a factor of 1,000 or more and are responsible for the observed increase.

He obviously assumes that no one will bother clicking on the link to that paper, because the concluding line of the abstract says,» A runaway greenhouse could in theory be triggered by increased greenhouse forcing, but anthropogenic emissions are probably insufficient.»

Discussions of isotope ratios and uptake and emission of CO2 by all the various and sundry physical and biological processes are distractions to the simplest and most compelling line of evidence that the increase in atmospheric CO2 concentrations is primarily anthropogenic — to wit, comparing the expected concentration increase based on anthropogenic emission rates with the actual increase over a given period of time.

Increasing emissions and concentrations of carbon dioxide receive considerable attention, but our analyses identify an important change in another pathway for anthropogenic climate change — a rapid rise in anthropogenic sulfur emissions driven by large increases in coal consumption in Asia in general, and China in particular.

If anthropogenic carbon emissions are limited by law and / or economic means, yet CO2 and CH4 levels do not respond as expected because Arctic emissions are increasing, this could impact the willingness of countries to engage in limiting human carbon emissions.

«Lately, along with mitigation of anthropogenic impacts on the climate system by reducing emissions of greenhouse gases, the world community places increasing emphasis on the economy and public adaptation to adverse effects of climate change, including analysis and prediction of emerging challenges and threats.»

The ocean's absorption of anthropogenic CO2 has already resulted in more than a 30 % increase in the acidity of ocean surface waters, at a rate likely faster than anything experienced in the past 300 million years, and ocean acidity could increase by 150 % to 200 % by the end of the century if CO2 emissions continue unabated (Orr et al. 2005; Feely et al. 2009; Hönisch et al. 2012)

SGE deployment increases gradually over time and ends up being deployed at up to a 50 % intensity — that is, it offsets about one - half of the radiative forcing caused by anthropogenic greenhouse gas emissions.

In general, increasing nutrient inputs, as expected throughout much of the developing world (Nixon 2009), may lead to increased pH, whereas oligotrophication (Nixon 2009) may lead to acidification, adding to the same trend imposed by anthropogenic CO2 emission.

Hence, the current narrative of OA as an anthropogenic process driven by increased CO2 emissions to the atmosphere and subsequent dissolution in the ocean is only applicable partially to the coastal ocean where anthropogenic impacts on pH have multiple sources and vary in intensity and direction.

So when they say that most of the observed increase in globally averaged temperatures since the mid-20th century is «very likely» due to the increase in greenhouse gas concentrations caused by anthropogenic emissions, they mean that there's a > 90 % chance that it is the case.

As I see the climate sensitivity caused by anthropogenic CO2 emissions becomes even more questionable as you scrutinize what is the real anthropogenic share of increase of CO2 content in atmosphere.

Surface ocean pH has decreased by 0.1 unit due to absorption of anthropogenic CO2 emissions (equivalent to a 30 % increase in hydrogen ion concentration) and is predicted to decrease by up to a further 0.3 - 0.4 units by 2100 (Caldeira and Wickett, 2003).

Charlie A - So by your understanding an abstract discussion the importance of carbon sequestration in mitigating climate change (implying sequestration of CO2 to reduce climate change), with CO2 increases coming from anthropogenic emissions (more evidence than needed) is in some fashion not implicitly stating that that AGW is the major cause of recent climate change?

This suggests to me that the long term trend is due to an increase in radiative forcing from anthropogenic emissions (partly offset by environmental uptake), but the short term variations are due to the modulation of the NNFI by the ENSO (which limits the partial uptake of anthropogenic emissions).