Sentences with phrase «total human greenhouse gas»

Agriculture and land use change contributed about 1/3 of total human greenhouse gas emissions in the past decade, through crop cultivation, animal production, and deforestation.

By comparison, total human greenhouse gas emissions (including CO2) since 1750 amount to some 350 billion tons.

Not exact matches

Exxon has argued against all the other shareholder proposals as well, including a «policy to explicitly prohibit discrimination based on sexual orientation and gender identity»; a policy articulating Exxon's «respect for and commitment to the human right to water»; «a report discussing possible long term risks to the company's finances and operations posed by the environmental, social and economic challenges associated with the oil sands»; a report of «known and potential environmental impacts» and «policy options» to address the impacts of the company's «fracturing operations»; a report of recommendations on how Exxon can become an «environmentally sustainable energy company»; and adoption of «quantitative goals... for reducing total greenhouse gas emissions.»

Researchers accounted for human influence on climate by estimating the present - day chances of Harvey's rainfall totals and then comparing them with 1950s greenhouse gas levels.

Currently, agriculture accounts for 10 - 12 percent of the total human - caused greenhouse gas emissions globally.

The researchers looked at a total of 34 different global climate model outputs, encompassing different degrees of atmospheric sensitivity to greenhouse gases and different levels of human emissions of greenhouse gases into the atmosphere.

«Many datasets, for example, the data for the total concentration of atmospheric greenhouse gases, show that human population has been a strong driver of the total impact of humans on our planet Earth.

Putting it all together, Figure 2 compares the warming from human caused greenhouse gases to the total radiative forcing from all human sources.

Black — Observed Warming, Green — greenhouse gases, Orange — total Influence from human factors, Yellow — other human factors, Blue — Natural Factors (volcanos and solar forcing).

To better determine the fate of the species in the face of climate change, the researchers analyzed a total of 34 different global climate models, taking into account atmospheric sensitivity to greenhouse gases and different levels of human greenhouse gas emissions.

Yet according to official climate models, even if the U.S. enacted an immediate and total ban on all human emissions of greenhouse gases, the difference in global temperature by the year 2050 would be a mere five one - hundredths of a degree Celsius.

The region locks up more than 100 billion tons of carbon — more than 11 years» worth of total greenhouse gas emissions from human activities; plays an important role in global weather circulation patterns, including delivering rainfall to Central America, the United States, and southern South America; supports perhaps a third of terrestrial biodiversity; and is home to the bulk of the world's remaining indigenous people still living in traditional ways.

This year's temperatures now appear set to exceed 1998's values by around 0.35 C — or about one - third of the entire warming total seen since large - scale human greenhouse gas emissions began during the late 19th century.

(04/23/2009) Fire accounts for roughly half of greenhouse gas emissions from deforestation and about twenty percent of total emissions from human activities, report researchers writing in the journal Science.

However, long - term climate change over many decades will depend mainly on the total amount of CO2 and other greenhouse gases emitted as a result of human activities.

CO2 is listed as a greenhouse gas, but it is less than 4 percent of the total, and the human portion is a fraction of that.

Currently global livestock production, increasingly intesified under factory farming, is responsible for (conservatively) 18 % of total human - caused greenhouse gas emissions.