Sentences with phrase «emitted from all human sources»

«The cumulative total amount of CO2 emitted from all human sources in the past 250 years is now around 530 billion tonnes»

OFFICIAL CSIRO Publication: «The cumulative total amount of CO2 emitted from all human sources in the past 250 years is now around 530 billion tonnes»

Not exact matches

These particles are emitted directly from natural sources or human activity, or they form from precursors emitted originally as gaseous pollutants.

In the study, we were concerned with the quantity of sulphur dioxide emissions, with numbers that are equally astonishing: In the beginning, the eruption emitted about eight times more sulphur dioxide per day than is emitted from all human - made sources in Europe per day.»

Large amounts of these compounds are emitted from natural sources and human activities.

Plants emit more volatile organic compounds at higher temperatures, which can increase ozone formation if mixed with pollutants from human sources.

Secondary organic aerosols are formed through complex physical and chemical interactions between pre-existing aerosols in the atmosphere and trace organic gases emitted from both human - caused and natural sources.

About 40 percent of methane is emitted into the atmosphere by natural sources like wetlands and termites, with the rest coming from human activities like cattle breeding, rice growing, fossil fuel exploitation, landfills and biomass burning.

Professor Salby makes the point that, on a year - to - year basis, there is very little correlation between the annual change in the atmospheric CO2 concentration and the total annual amount of CO2 emitted by humans from all sources.

Approximately 40 percent of methane is emitted into the atmosphere by natural sources (e.g., wetlands and termites), and about 60 percent comes from human activities like cattle breeding, rice agriculture, fossil fuel exploitation, landfills and biomass burning.

Methane is an important greenhouse gas, which today is partly emitted from natural sources and partly from human activities.

In fact, some types of trees actively consume certain types of air pollution.Looking at oxygenated volatile organic compounds (oVOCs)-- which are emitted from both manmade and non-manmade sources and can have serious effects on the health of the environment and humans — the team found that deciduous plants take up oVOCs as much as four times more rapidly than previously thought.

And then when you consider that (1) humans are a tiny percentage of the total animal biomass on Earth — probably well under 1 % — and that most animals emit more CO2 on a per - pound - of - body - weight than humans do (especially small mammals and birds, which can emit 6 times or more CO2 per pound of body weight than humans)-- you're now looking at SEVERAL HUNDRED BILLION TONS OF CO2 from animal reespiration alone — on top of all the other natural sources of CO2.