Sentences with phrase «from human combustion»

The heat forcing from human combustion of fuels, nuclear reactions, etc. can be estimated fairly accurately.

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.

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.

In this case, future CO2 level from human combustion of fossil fuels would be constrained to the same as occurred in the past or ~ 110 ppmv above today's level = a bit more than 500 ppmv, rather than a bit less than 1000 ppmv).

Not exact matches

The greatest human influence on the sulfur cycle comes from industrial activity, mainly the combustion of coal and oil and the smelting of sulfur - bearing metallic ores.

It then combines with pollutants from combustion — mainly nitrogen oxides and sulfates from vehicles, power plants and industrial processes — to create tiny solid particles, or aerosols, no more than 2.5 micrometers across, about 1/30 the width of a human hair.

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.

«It's one of the clearest examples of how humans are actually changing the intensity of storm processes on Earth through the emission of particulates from combustion,» said Joel Thornton, an atmospheric scientist at the University of Washington in Seattle and lead author of the new study in Geophysical Research Letters, a journal of the American Geophysical Union.

In this study, Horney and colleagues focused on PAHs, which are a product of combustion from human activities such as petroleum consumption in transportation or natural processes such as wildfires.

The precursors of acid rain formation result from both natural sources, such as volcanoes and decaying vegetation, and human - made sources, primarily emissions of sulfur dioxide and nitrogen oxide resulting from fossil fuel combustion.

These gases come from human activities such as combustion of coal and oil as well as natural sources such as emissions from plants.

Human influences on the climate (largely the accumulation of CO2 from fossil fuel combustion) are a physically small (1 %) effect on a complex, chaotic, multicomponent and multiscale system.

I just go to the section where they get into discussing Arctic seabed methane in more detail, and the conclusion of that section is actually: «In summary, the ocean methane hydrate pool has strong potential to amplify the human CO2 release from fossil fuel combustion over time scales of decades to centuries.»

It's good old fashioned black carbon soot — a visible pollutant with measurable effects on human health both in poor places, where it comes from cooking or heating using coal, firewood or dung, and rich countries, where it is produced mainly through the combustion of diesel and similar fuels and from some industries.

While the best - known pollution in Mexico is Mexico City's air, which mainly comes from the combustion of vehicle fuel, it's not the only place with a problem or the only kind of pollution in circulation posing a serious risk to human health.

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.

What makes the climate predicament even tougher is the uneven nature of human development, and the reality that nearly all of the growth in emissions of greenhouse gases is coming from a near - inevitable burst of fossil fuel combustion in fast - growing developing countries.

So, while Co2 can be shown to radiate heat in a lab, the effect of human combustion of fossil fuels contributing roughly 3 % of the.04 % of the atmospheric Co2 levels will have, as I think you and others here have stated, a measured effect indistinguishable from zero.

«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.»

The Urban Heat Island Effect (UHI) is a phenomenon whereby the concentration of structures and waste heat from human activity (most notably air conditioners and internal combustion engines) results in a slightly warmer envelope of air over urbanised areas when compared to surrounding rural areas.

The American Lung Association recognizes that pollution from the combustion of wood and other biomass sources poses a significant threat to human health, and supports measures to transition away from using these products for heat production.

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.

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.

It's estimated that humans emit about 11 billion tons of carbon dioxide into the atmosphere every year, with 90 percent of it coming from the combustion of fossil fuels and 10 percent from deforestation.

It then combines with pollutants from combustion — mainly nitrogen oxides and sulfates from vehicles, power plants and industrial processes — to create tiny solid particles, or aerosols, no more than 2.5 micrometers across, about 1/30 the width of a human hair.

And I'm sure you will also agree that humans can not emit more CO2 from fossil fuel combustion than there is carbon in all the remaining fossil fuel resources on Earth.

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.

Healthy forests absorb carbon dioxide from human fossil fuel combustion and at the same time reduce regional temperatures.

None are as high as Vaughan's estimate or an extension of the Hofmann curve (1070 ppmv)-- which also lies above the «maximum physically possible» from human fossil fuel combustion.

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

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.

Jim D is right in writing that «0.03 W / m2 is about right for combustion heat», if we figure that the total from all human sources is 125,000 terawatt / hours / yr.

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).

Although carbon dioxide from fossil fuel combustion is the primary cause of global warming, other human activities and greenhouse gases are also central to the climate story.

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

shale) for «inferred total recoverable» oil and gas at 5,100 bbl and 490 trillion cubic meters, respectively, I end up with a maximum possible CO2 level (from human fossil fuel combustion) of 980 ppmv.

The NAS National Research Council calculates that the health costs from fossil fuel combustion are in the billions: «WASHINGTON — A new report from the National Research Council examines and, when possible, estimates «hidden» costs of energy production and use — such as the damage air pollution imposes on human health — that are not reflected in market prices of coal, oil, other energy sources, or the electricity and gasoline produced from them.

In summary, the ocean methane hydrate pool has strong potential to amplify the human CO2 release from fossil fuel combustion over times scales of decades to centuries.

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.

Human emissions of reactive sulfur and nitrogen, derived from fossil fuel combustion and agriculture, have led to increased deposition of strong acids (HNO3 and H2SO4) and bases (NH3) to the ocean, hence affecting seawater pH (Doney et al. 2007).

¶ ¶ 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»).

[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.

During the past 500 years or so, human activities have released mercury from its relatively stable and water - insoluble form (cinnabar) in rocks and soil through mining, fossil fuel combustion, and other activities, and so have increased the portion of mercury that is actively cycling through the atmosphere, surface waters, plants, and animals as it changes chemical and physical form.

The discussion may be «over» regarding the GH theory, that CO2 is a GH gas or that humans emit CO2 from fossil fuel combustion, etc. (with more affluent nations emitting more than impoverished ones).

Combine that with the direct damage that air pollution from coal combustion does to human health, and there's a reason why some have called coal the enemy of the human race.»