Sentences with phrase «factors than carbon»

However, our study suggests that in the field, other factors than carbon or water are limiting tropical tree growth.

Not exact matches

Traditional rustic shade has a larger carbon footprint than commercial polyculture because yields are lower per unit area, and all the contributing factors are allocated to less product.

«Our gauge factor has been up to eight times higher than commercial sensors and 75 percent higher than many other carbon nanotube sensors.»

Taking each factor independently, the team found that CCS only achieves the necessary deployment under one of the following conditions: the price of oil is greater than $ 85 / barrel; the carbon tax incentives increase dramatically to above $ 75 per tonne of carbon dioxide by 2050; or learning rates for technology deployment are sustained at a high rate, with 14 % cost reduction for every doubling of deployment.

It produces no carbon dioxide exhaust emissions, and even when the CO2 released in generating the electricity used to charge its batteries is factored in, it is responsible for less than half the amount emitted by the «greenest» petrol cars.

Cornell University researchers factored in the carbon emissions over the course of natural gas's life cycle when it is extracted using hydraulic fracturing — which includes drilling the wells, erecting the construction sites, building pipelines to transport the gas, fueling the pumps that force the water underground, and transporting the wastewater — and concluded that natural gas is dirtier than coal.

Some prior research has suggested that carbon dioxide emissions from all lakes on Earth are less than what was found in the Arctic, and future factors could shift the importance of sunlight, noted Lars Tranvik, a Swedish scientist, in an accompanying Science article.

When you account for these factors, corn ethanol — currently the most widely produced biofuel in the United States — generates about 43 percent less carbon dioxide than gasoline.

Weight is also a key factor in the car's formula and is expected to be less than 3,300 pounds; a stat easily achievable with the optional Weissach Package, which includes magnesium wheels, a titanium cage, and a lighter carbon - fiber roof.

Once you factor in our «nano - carbon» brake pads that improve bite and reduce fade, you have a package that's better than stock in every way, without punishing your kidneys from being super-stiff.»

If the «green - factor» is a priority, then it can be argued that web hosting companies that directly use renewable energy sources should be considered more green than those who purchase carbon credits.

Also, dealing with the forests as a «carbon sink,» deforestation and other factors may have rendered trees as a net carbon emitter, rather than a sink.

The release of this trapped methane is a potential major outcome of a rise in temperature; it is thought that this is a main factor in the global warming of 6 °C that happened during the end - Permian extinction as methane is much more powerful as a greenhouse gas than carbon dioxide (despite its atmospheric lifetime of around 12 years, it has a global warming potential of 72 over 20 years and 25 over 100 years).

That may mean that natural factors, such as changes in solar radiation, played a larger role in atmospheric carbon dioxide than reforestation during this time, Pongratz said.

The same for land occupation and sea algues: a doubling of CO2 will increase the amount of carbon fixed over decades, but that is less than double: even with all other necessities available in unlimited quantities (which are the limiting factors in many cases), that gives about 20 - 40 % extra growth, not 100 %.

The 3 - to - 1 interstate variation in carbon emissions from household activities is the result of many factors, some more controllable than others.

Sizes of the reservoirs and what's known reliably about carbon fluxes between various reservoirs make it clear that the factor can not be much less than 1/2, certainly not anything like 1/10.

The only conclusion one can draw from the above data is that for the LHS to be negative the NaturalSinks % must be larger than NaturalSources %, so clearly nature has been a net carbon sink from the atmosphere over this period and by a factor of around 80 % of net annual carbon change.

Have you considered that the economic risks of drastic carbon cutting and therefore access to cheap energy for developing economies, not to mention distractions from real and present infrastructure and land - management issues (a very likely factor in the recent Pakistan floods) under the catch - all label of global warming, may in fact represent a blind alley that contributes to a fatality risk for many of the world's poorest people of at least an order of magnitude greater than 1 %?

... the Intergovernmental Panel on Climate Change, which includes more than 3,000 scientists from around the world, agrees that climate change is caused by a number of factors, including excess carbon dioxide... The Government of Alberta accepts the findings of the Intergovernmental Panel on Climate Change and recognizes the need to reduce emissions and take immediate action to deal with the impacts of global warming.

Failure to consider these factors at planning stage will more than likely lead to increases in terms of energy use, carbon dioxide emissions, construction costs, and risk of dangerous summer overheating.

Further evidence comes from a recent review of data for mature trees in four climatic zones, which concluded that pine growth at the treeline is limited by factors other than carbon (Körner 2003).

A recent analysis of CH4 fluxes from hydroelectric reservoirs showed that 10 % of reservoirs have emission factors (gCO2e per kilowatt hour) larger than the CO2 emissions from natural gas combined cycle plants (Hertwich 2013), although the authors did not consider carbon burial offsets.

Other organizations who have made calculations of the US fair share of the remaining carbon budget using different equity factors have concluded that the US fair share of safe global emissions is even smaller than that depicted in the above chart.

But plankton communities produce more organic carbon than CaCO3, by a factor of 4 to 10 or so (the exact number is not well known).

And coal power, more than any other single factor, is what has driven the steady rise in global carbon emissions.

I conclude that for the past 33 years there has been an increase of no more than 0,3 deg C, which would represent a «global warming» trend of around 0.9 C per century, due to unknown factors related to the Sun, and surly nothing to warrant a huge economic disruption caused by a fanatical U.S. war on carbon aimed at driving up the cost of conventional fuels aimed at unnecessarily reducing their consumption.

99 % of the world's climate scientists do not agree that a carbon tax is a good idea, and if they did their opinion would be little better than yours or mine because science is only one of many factors involved in such a judgement.

We argue elsewhere (see section 14 in Supporting Information of [54]-RRB- that the commonly employed net land use estimates [256] are about a factor of two larger than the net land use carbon that is most consistent with observed CO2 history.

Thus, the case for a carbon tax becomes weaker once we factor in the tax code; we should apply an «optimal» carbon tax that is lower than the so - called «social cost of carbon.»

At around US$ 600 per tonne, Climeworks» system isn't an inexpensive way of reducing CO2 in the atmosphere, and this is the key factor that makes critics think carbon capture might be more of an illusion than a realistic strategy to fight climate change.

Radiative forcing is a multiplier that is added to the carbon emissions factor, that quantifies these additional effects; including the fact that emitting GHGs in the upper atmosphere has a greater heat - trapping effect than emitting GHGs at ground level.

This allows the appropriate cost benefit analysis (maybe this is getting to far into politics) that should be significantly more useful for the main debate than these temperature predictions that we have and takes many unpredictable factors out of the equation and if we have a full chain of logic it should be easier to find — because time as opposed to amount of carbon related models leave you asking questions like «what will happen to technology»

In scientific contexts, the denialist can deny a cause (carbon dioxide does not cause global warming), an effect (the Earth is not warming), the association between the two (CO2 levels are rising and the Earth is warming, but not because of the carbon dioxide), the direction of the cause - and - effect relationship (carbon dioxide concentrations are increasing because the earth is warming) or the identification of the cause - and - effect relationship (other factors than greenhouse gases are causing the Earth to warm).

West of the Mississippi River, the emission factors for bituminous coal range from more than 201 pounds of carbon dioxide per million Btu in Missouri, Iowa, and Nevada to more than 209 in Arizona, Arkansas, and Montana.

The fact that, in the long history of the atmosphere, temperature increases sometimes precede carbon dioxide increases simply implies that those temperature change are due to some factor, or factors, other than carbon dioxide increases; for example from changes in the Earth's orbit.

EIA's emission factors will not only enable coal - generated carbon dioxide emissions to be estimated more accurately than before, but they will also provide consistency in estimates.

The statistical analyses (Table FE3) indicated that: (1) there are statistically significant differences in carbon dioxide emission factors across both coal rank and State of origin; (2) coal rank and State of origin each explain approximately 80 percent of the variation in carbon dioxide emission factors; and (3) State of origin combined with coal rank is a slightly more powerful explanatory variable than either coal rank or State of origin alone.

While methane and nitrous oxide make up much smaller portions of total greenhouse gas emissions, these gases are still important factors in the climate crisis, in part because they each have stronger global warming effects than carbon dioxide and also because they constitute an increasing portion of total emissions.

From the more than 60,000 coal samples in the File, 5,426 were identified as containing data on heat value and the ultimate analysis (6) needed for developing the relationship between carbon and heat content of the coal, that is, the carbon dioxide emission factors.

Such considerations can also be factors for socially responsible investors who are concerned about increased carbon emissions in the U.S. Investors, with more than $ 3 trillion in assets and who use an environmental, social and governance criteria, have been effective at encouraging companies to consider environmental consequences in their business decisions.

The National Petrochemical Plaintiffs explain that there is no dispute that application of the «two factors» identified by Defendants results in the following: (1) California's HCICO is assigned a CI [carbon intensity] value with less than half of the GHG emissions associated with its production and transport; (2) California's HCICO is the only HCICO to qualify for this favorable treatment; and (3) All HCICOs from outside of California are required to account for all of the GHG emissions associated with their production and transportation.

For example, the US spends about $ 80 billion per year far the Navy to monitor the Gulf region, about $ 80 billion per year in subsidies to fossile fuel companies (far greater than geen subsidies, BTW), and then thet cost of climate change as a result of this carbon is not factored in, etc., etc., etc..