Sentences with phrase «fuel combustion decreased»

From 2010 to 2011, CO2 emissions from fossil fuel combustion decreased by 2.5 % due to: (1) a decrease in coal consumption, with increased natural gas consumption and a significant increase in hydropower used; (2) a decrease in transportation - related energy consumption due to higher fuel costs, improvements in fuel efficiency, and a reduction in miles travelled; and (3) relatively mild winter conditions resulting in an overall decrease in energy demand in most sectors.

Not exact matches

The combustion of fossil fuel that increases carbon dioxide by 0.7 per cent per year decreases the oxygen by only 0.001 per cent per year (Ehrlich, Ehrlich & Holdren 1977, p. 79).

Keeling has documented a decrease in oxygen levels that is due to fossil - fuel combustion, which uses up oxygen and releases CO2.

There's a slow cooling trend, as expected from the slowly decreasing insolation (the Milankovitch cycle), followed by an unexpected temperature spike at the end — the result of fossil fuel combustion on a global scale.

On the naïve and scientifically silly assumption that the only way that plant - based carbon can get into the atmosphere is by people burning fuels, they exult that here indeed is the smoking gun: Decreases of C13 in the atmosphere mean that our sinful combustions are clearly identifiable as major contributors to the 100 ppm increase in CO2 since 1850.

that «Human combustion of fossil fuels is significantly causing that climate change» is also true, then many, perhaps most, people will accept that there is a need to «reduce greenhouse gas emissions and build out clean energy» even if it will «cost consumers money, decrease energy security and destroy jobs».

We show that as fossil fuel combustion is phased out in an urban coastal area, particle formation will decrease substantially but still continue at a reduced rate due to the contribution from OSC oxidation products.

Climate Change Strategies CO2 emissions from fuel combustion have fallen substantially in the Czech Republic, decreasing by 24 % from 1990 to 2003.

As with land - produced biofuels, the contribution to carbon dioxide reduction would come from cutting net carbon dioxide additions via equivalent decreases in fossil fuel combustion.

Measured decreases in the fraction of other forms of carbon (the isotopes 14C and 13C) and a small decrease in atmospheric oxygen concentration (observations of which have been available since 1990) show that the rise in CO2 is largely from combustion of fossil fuels (which have low 13C fractions and no 14C).