Sentences with phrase «by human combustion»

But these 139 nations account for perhaps 99 % of all the carbon dioxide emitted by human combustion of fossil fuels.

But the suspicion is that the long - term trend in global warming driven by human combustion of fossil fuels that dump vast quantities of greenhouse gases into the atmosphere must be playing a part.

Climate change is happening, being driven by the human combustion of fossil fuels at unprecedented rates for more than a century.

Not exact matches

Ten years later, no one knows what was in the cloud of gases released by the combustion of all that jet fuel and building material but science has revealed what was in the dust — cement, steel, gypsum from drywall, building materials, cellulose from paper, synthetic molecules from rugs, glass fibers and human hair from the long decades of the two towers» use, among other items.

Whereas other actuators powered by electricity or combustion could cause damage to humans or their surroundings, loss of vacuum pressure in VAMPs would simply render the actuator motionless.

Human - generated aerosols can enter the atmosphere directly, as is the case with soot emitted by internal combustion engines in cars and trucks, he explains.

David Buckland confronts our ever - growing human infrastructure by displaying an internal combustion engine in the form of a ready - made.

He explained that an article I wrote in 2002 about fires, both natural and human caused, smoldering in coal seams around the world, inspired him, while he was completing a doctorate at the University of California, Berkeley, to switch from studying risks posed by smoldering combustion in spacecraft to those back on Earth.

You then take that ethanol and burn it into an internal combustion engine that is maybe 20 - 30 % efficient, and you end up with a tremendous amount of wasted energy... And you've used up farmland that could instead have grown food for human consumption, increasing food prices by reducing supply.

Researchers are confident that they understand the cycle of Ice Ages, and they also have a clear idea that the biosphere plays a hand in keeping the planet at liveable temperatures, but they also know that the high altitudes are more than usually affected by climate change driven by ever - higher ratios of greenhouse gases released by the combustion of fossil fuels by seven billion humans.

«Due to human activities such as the combustion of fossil fuels and deforestation, and the increased release of CO2 from the oceans due to the increase in the Earth's temperature, the concentration of atmospheric carbon dioxide has increased by about 35 % since the beginning of the age of industrialization.»

Climate change is driven by human activity — chiefly the combustion of fossil fuels and changes in land use — and forests and other natural ecosystems play a powerful role in both soaking up the greenhouse gases released by human economic activity and at the same time sheltering many of the other 10 million or so species that share the planet.

«In considering the question of human activity and climate change it is essential to distinguish between global warming, which is a progressive increase in the annual mean global temperature, and human - activity - induced greenhouse warming, as may, for example, be caused by the release of greenhouse gases into the atmosphere as a result of fossil fuel combustion or deforestation.»

10/18/16 — Setting a tax on carbon emissions from fossil fuel combustion is considered by many experts, including two economic analysts writing in Issues, as a promising way to help control human - caused climate change, but US policy makers have resisted.

The main culprits are small particulates — pollutants less than one tenth the thickness of a human hair that are produced by incomplete combustion of fossil fuels and biomass.

What it does show is a major role for atmospheric water vapor, to which there is a significant direct human contribution from both the combustion of hydrocarbon fuels and the cooling needed by steam generation of power, but one that is totally disregarded by Trenberth and the IPCC.

Although it is released by human activities through the combustion of fossil fuels, it is also formed by certain natural processes (see carbon cycle).

The most recent report of the International Panel on Climate Change says it is extremely likely that human influence has been the dominant cause of this warming which is driven by the build up of carbon dioxide emissions from fossil fuel combustion, cement production, and land use changes.

Vaughan's projection («scuse me, «extrapolation») of 1040 ppmv by 2100 is physically impossible to reach from human combustion of fossil fuels, even if we burned them all 100 % up by 2100.

Emissions from human activities, particularly the combustion of fossil fuels, are changing atmospheric composition, especially by raising the concentrations of climate - warming gases;

The researchers say they took a particular interest in emissions generated by human activity and the combustion of biomass.

For decades, climate scientists have predicted that rising levels of atmospheric greenhouse gases from the human combustion of fossil fuel could lead to global warming, and that warming would be accompanied by more frequent or more violent storms.

Three fourths of the carbon emissions from human activities are due to the combustion of fossil fuels; the rest is caused by changes in land use, principally deforestation.

Overall, they find that by far the largest radiative forcing over the past 250 years comes from the increased greenhouse effect, which we also know is due to human fossil fuel combustion (Figure 3).

1) Basic physics - human fossil fuel combustion has increased the greenhouse effect, causing a global energy imbalance, which the planet responds to by warming.

And although such constraints are not directly connected to climate change driven by profligate combustion of fossil fuels, what humans achieve is a combination of genetic and environmental limitations.

Anthropogenic Global Warming, however, is the theory that CO2 produced by humans by industrial processes, but mainly fossil fuel combustion, will cause the Earth to warm unnaturally and produce a runaway greenhouse effect.

Bottom Line: 1,600 ppmv by 2100 from human fossil fuel combustion is not realistic, simply because there isn't that much carbon there.

The report, The Human Cost of Weather - Related Disasters 1995 - 2015, is intended to focus attention during the UN climate change conference — which opens in Paris on Monday − on the damage already inflicted by global warming as a consequence of rising levels of greenhouse gases in the atmosphere, in turn as a consequence of the human combustion of fossil fuels and the destruction of the planet's forHuman Cost of Weather - Related Disasters 1995 - 2015, is intended to focus attention during the UN climate change conference — which opens in Paris on Monday − on the damage already inflicted by global warming as a consequence of rising levels of greenhouse gases in the atmosphere, in turn as a consequence of the human combustion of fossil fuels and the destruction of the planet's forhuman combustion of fossil fuels and the destruction of the planet's forests.

In fact, it clears up a long - standing uncertainty: just how much global warming − driven by prodigal human combustion of fossil fuels − is changing the rhythms of life in one zone of the planet.

But what happens, and how swiftly it happens, depends on human response to global warming, driven by the combustion of fossil fuels and the release of the greenhouse gas carbon dioxide into the atmosphere.

So, the concern is not with the fact that we have a greenhouse effect, but whether human activities are leading to an enhancement of the greenhouse effect by the emission of greenhouse gases through fossil fuel combustion and deforestation.

Sea level rise is happening everywhere, as ice caps and glaciers melt and the seas rise in response to global warming driven by prodigal human combustion of fossil fuels, and researchers have advanced from general warning to the kind of detail that could help city and state planners prepare to cope with flood risks.

¶ ¶ 38 («when used -LSB-,]... fossil fuels release greenhouse gases), 39 («use of fossil fuels emits carbon dioxide»), 45 («emissions resulting from human activities are substantially increasing... greenhouse gases»), 48 («increase in atmospheric carbon dioxide caused by the combustion of fossil fuels»), 52 («fossil fuels -LSB-,]... when combusted, emit carbon dioxide»).

According to Discovery News: «In a 2006 report, EPA officials stated that they investigated 86 complaints of damage to human health or the environment caused by «fossil - fuel - combustion waste management units» between 1994 and 2004.

[7][8] The vast majority of anthropogenic carbon dioxide emissions (i.e., emissions produced by human activities) come from combustion of fossil fuels, principally coal, oil, and natural gas, with comparatively modest additional contributions coming from deforestation, changes in land use, soil erosion, and agriculture.

But the potentially calamitous impact of clearance for mining, logging and ranching, combined with the longer - term impact of human - induced climate change, driven by fossil fuel combustion on a global scale, had to be identified by complex computer simulations.

«I think that the science is inconclusive on this... I personally believe that the solar flares are more responsible for climatic cycles than anything that human beings do and our lunar, our rovers on Mars have indicated that there has been a slight warming in the atmosphere of Mars and that certainly was not caused by the internal combustion engine.»

They have firmly linked glacial loss to global warming driven by profligate human fossil fuel combustion and they have warned that such loss risks social change and potential catastrophe for millions.