Sentences with phrase «total use of fossil fuels»

Not exact matches

CO2 emissions from the agricultural sector represent 21 - 25 percent of total CO2 emissions, due to fossil fuels used on farms, shifting patterns of cultivation and chiefly, deforestation.

His calculations, based on 2008 figures for the concentration of CO2 in the atmosphere, show that even assuming a lower estimate of forest carbon content, total and equivalent CO2 would level out at 476 parts per million, even if we stopped all fossil fuel use immediately.

All too often, this fact is used to suggest that the total greenhouse gas emissions of burping cows far outweighs the total emissions from burning fossil fuels.

The third is total energy consumption and the use of non-renewable energy sources (fossil fuels) to drive our total numbers and per capita consumption rates.

Category of emissions Warming (°C) Fossil fuel CO2 0.5 Land - use CO2 0.25 Methane 0.25 Nitrous Oxide 0.09 Aerosols − 0.4 Total warming 0.7

, contributed 50 % of the amount of total GHGs / CO2 from using fossil fuels for energy over that same period.

According to the CDIAC, fossil fuel combustion plus cement manufacture have accounted for about 8.4 PgC / year, with Cement Manufacture representing about 4.5 % of that total, and recent land use changes have accounted for about 0.9 PgC / year.

Obviously, the melting and recasting of several thousand bottles required the use of a lot of fossil fuel; transport over the round trip of several hundred kilometres to the bottle factory would add to the total.

If the country's economy grows enough then the target could be hit, provided industry becomes more efficient in its use of fossil fuel produced power, even if total carbon emissions actually rise.

Given that humans are currently pulling 17 tW from the earth, as fossil fuels, and using another 30 tW for energy from food, our current needs are already a big proportion of the total «free energy» available.

Over the same time period, humans have consumed roughly 15 % of ALL the fossil fuel resources that WERE EVER on our planet (based on WEC estimates of inferred possible total fossil fuel resources today and CDIAC estimates of fossil fuel use to date).

biomass the total quantity of living matter in a particular habitat; plant and organic waste materials used as fuel and feedstock in place of fossil fuels

In the IRENA scenario, total fossil fuel use in 2050 would be lower, standing at a third of today's level, though oil demand would still be at 45 % of today's level.

It turns out that the maximum temperature rise associated with future fossil fuel use is only 0.8 °C, less than half of the total.

If you add that to the emissions, then the measured increase in the atmosphere is about 45 % of the total emissions (fossil fuels + land use changes), while without land use changes the increase is about 55 % of the emissions (fossil fuels only).

Finally, we use the in situ estimates of CO2ff mole fraction to infer total fossil fuel CO2 emissions from the Sacramento region, using a mass balance approach.

Once one deducts the small amount of oil and gas going into non-combustion end uses, the inferred possible total fossil fuel resources on this planet represent 2,873 Gt of carbon, which would generate 10,536 Gt CO2 when combusted.

Does your model fit not only Mauna Loa but Law Dome as well using as input only total annual emissions of CO2 from fossil fuel, cement production and land use changes?

From these total inferred fossil fuel resources on our planet we can calculate the amount of CO2 generated (deducting 20 - 25 % of oil and gas used for «non-combustion» uses, such as petrochemicals, fertilizers, etc.).

If the goal is to rapidly replace fossil fuel use with wind, solar and hydropower, then the achievement of the goal will take longer and be more expensive — and will likely result in a large cost in terms of lives lost and total environmental pollution.

Using one of the IPCC's simpler climate models, Rutledge forecasts that total CO2 emissions from fossil fuel will be lower than any of the IPCC scenarios.

In addition, I have shown you that the total future GH warming from the principal GHG, CO2, is constrained by carbon content of all remaining fossil fuels on Earth to an absolute asymptotic maximum of around 2C, which could theoretically occur in 200 to 300 years, in the unlikely event that all fossil fuels get 100 % used up by then

He will explain why conservation and even substantial reduction in our total energy use will be needed as we transition to solar and wind, in place of fossil fuels.

The correct total for CDIAC's estimate of fossil fuel and land use changes is only 41.5 GtC, not 75.45!

The red numbers and arrows show the additional fluxes caused by human activities averaged over 2000 - 2009, which include emissions due to the burning of fossil fuels, cement production and land use change (in total about 9 PgC / year).

The report says that 83 percent of total U.S. greenhouse gas emissions consisted of carbon dioxide from the use of fossil fuels including coal, petroleum, and natural gas, while 8.6 percent consisted of methane and 6.1 percent came from nitrous oxide.

Combining my previous method of projecting total fossil fuel use and the trends in Figure 3, I came up with this...

If you also include the value of avoided fossil fuel use in this calculation, the total GHG abatement cost of the whole system would come out even lower (i.e. around $ 10 / t CO2 - equivalent).

CFACT energy policy advisor Marita Noon reveals how Hillary Clinton has positioned herself on both sides of the fracking issue — but her campaign for President emphasizes an end to all uses of fossil fuels and a total reliance on so - called «renewable» energy.

Figure 1 - Fraction of the total human emissions (fossil fuel burning & land use change) that remain in the: a) atmosphere, b) land vegetation and soil, c) the oceans.

The CO2 emissions from meeting this energy demand using mainly fossil fuels account for around 80 % of total global emissions (IEA, 2006b).

For example, the global average effect of any change in albedo from using solar power would be rather small in comparison to mitigation of climate change if that solar power is used (to displace fossil fuels) for a sufficient time period (example: if a 10 % efficient PV panel with zero albedo (reflectivity for solar (SW) radiation) covered ground with an albedo of 25 — 30 %, the ratio of total increased heating to electricity generation would be similar to that of many fuel - combusting or fission - powered power plants (setting aside inverter and grid efficiency, etc., but still it would be similar).

It shows fuel shares of total world energy supply, including the contribution of fossil sources (oil, coal and gas), nuclear power (providing for about 16 % of global electricity demand and 6.5 % of all energy use) and renewables (13 % of total energy).

Thus, if we supplement considerably with solar, wind, water / tidal, some biofuels, etc... we will significantly improve the longevity of fossil fuels we need while reducing their combustion by an amazing percentage of total energy source use.

The supply and demand model was used to obtain future predictions for individual and total fossil fuel productions for a number of different scenarios, including CASE 1, CASE 2 and CASE 3 and STATIC, DYNAMIC and INDEPENDENTLY DYNAMIC supply and demand interaction options.

Although solar (mainly PV) is the largest single energy source by that time, total carbon consumed through fossil fuel use amounts to 800 billion tonnes carbon by the end of the century, just a bit less than current proven reserves (900 billion tonnes as indicated above).

You will also find that «Electricity generators consumed 32 percent of total U.S. energy uses from fossil fuels and emitted 40 percent of the CO2 from fossil fuel combustion in 2012.»

The utility operates eleven fossil - fuel generating plants, and uses fossil fuels (mainly coal) to generate 80 - 85 percent of its total electrical output, with the bulk of the remainder coming from nuclear power.