Sentences with phrase «emissions from human activities]»

The scientific consensus is that greenhouse gas (GHG) emissions from human agricultural and industrial activity are the principal cause of this global warming [1]--[3] and that such emissions must be severely curtailed to prevent further anthropogenic disruption of the climate system [4].

These and other mercury emissions from human activities (past and present) account for at least 50 % and perhaps as much as 75 % of current, annual, global mercury emissions from all sources (including natural sources), but a large, unknown portion of those mercury emissions is due to past rather than current human activities, according to EPA estimates.

For example, certain countries started having greener forests in the 19th century, before the onset of widespread carbon emissions from human activity.

«Combined, the Earth's land and ocean sinks absorb about half of all carbon dioxide emissions from human activities,» said Paul Fraser of the Commonwealth Scientific and Industrial Research Organization.

In 2016, nitrous oxide (N2O) accounted for about 6 percent of all U.S. greenhouse gas emissions from human activities.

The critical question is whether carbon dioxide emissions from human activity are significantly affecting climate patterns.

In 2016, CO2 accounted for about 81.6 % of all U.S. greenhouse gas emissions from human activities.

In the modern era, emissions to the atmosphere from volcanoes are only about 1 % of emissions from human sources.

Deforestation accounts from nearly 20 percent of greenhouse gas emissions from human activities.

Put another way, 99.88 % of the greenhouse effect has nothing to do with carbon dioxide emissions from human activity8.

The Southern Ocean stores almost half of the carbon emissions from human - made sources, so these measurements are incredibly important to the overall understanding of climate change.

Efficiency of natural sinks to remove emissions from human activities has been declining for 50 years.

Since the Industrial Revolution, emissions from human activities of greenhouse gases such as carbon dioxide have driven the earth's climate system dangerously outside of its normal range.

The Farm Bureau does not share the scientific opinion on climate change, with its official position being that «there is no generally agreed upon scientific assessment of the exact impact or extent of carbon emissions from human activities, their impact on past decades of warming or how they will affect future climate changes.»

Unfortunately for the EPA, a major pillar of support of the Endangerment Finding — that «most» of the «observed warming» since the mid-20th century is from greenhouse gas emissions from human activities — has been shown by recent scientific research in major peer - reviewed scientific journals to be largely in doubt.

You have not even figured out how much pH change the ocean would see if (let's say) half of all CO2 emissions from human fossil fuels ended up in the oceans.

CO2 is already in the atmosphere naturally, so why are emissions from human activity significant?

Fossil fuels supplied about 81 % of the primary energy consumed in the United States and were responsible for about 93 % of total U.S. carbon dioxide emissions from human activity in 2015.

Climate realists, those of us who do not support the hypothesis that greenhouse gas emissions from human activities are causing a climate crisis, have certainly been pleased.

Major sources of greenhouse gas emissions from human activities include power generation (about 25 per cent of all emissions), transport, industrial activities, deforestation and agriculture.

NGOs argue for reductions to carbon dioxide emissions from human activities (i.e. anthropogenic CO2 emissions) because it is assumed that these emissions are causing the recent rise of carbon dioxide in the air.

The planet is warming because of the growing level of greenhouse gas emissions from human activity.

(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.

He wrote a well - reviewed book called «The Climate Fix: What Scientists and Politicians Won't Tell You About Global Warming,» in which he presents measured skepticism of climate - change orthodoxy — for example, he believes the role of carbon emissions from human industry is greatly exaggerated by politicized science, but he doesn't think human carbon emissions are irrelevant, and is not implacably hostile to the goal of reducing them.

This effect may be strengthened by emissions from human activities.

99.9 % of scientists agree: the world is warming due to greenhouse gas emissions from human causes.

Greenhouse gas (GHG) emissions from human activity and livestock are a significant driver of climate change, trapping heat in the earth's atmosphere and triggering global warming.

It is being billed as the time when nations will come together to agree on a global roadmap to reduce emissions from human activities and prevent dangerous climate change.

A certain amount of continued warming of the planet is projected to occur as a result of human - induced emissions to date; another 0.5 °F increase would be expected over the next few decades even if all emissions from human activities suddenly stopped, 11 although natural variability could still play an important role over this time period.12 However, choices made now and in the next few decades will determine the amount of additional future warming.

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.

In today's West Australian, which is the most widely newspaper in Western Australia, there is a piece by Paul Murray discussing the survey by the American Meteorological Society of the views of its members on the link between carbon emissions from human activity and global warming.

For the case of climate change, Thagard and Findlay (2011) showed how the mainstream scientific position, namely that GHG emissions from human economic activities are causing the Earth to warm, is coherent and accounts for the available evidence.

Also the Paris Agreement says by the second half of this century, there must be a balance between the emissions from human activity such as energy production and farming, and the amount that can be captured by carbon - absorbing «sinks» such as forests or carbon storage technology.

Three fourths of the carbon emissions from human activities are due to the combustion of fossil fuels; the rest is caused by changes in land use, principally deforestation.

«It's [the increase in carbon dioxide through increased emissions from human activities] the only variable that can best explain the rapid increase in global temperatures.»

This idea, first proposed six years ago and formally endorsed by the International Energy Agency in 2011, has been gaining traction because of the ever - stronger scientific consensus that carbon emissions from human activity is the principal driver of destructive climate change.

Scientists say that the world is currently undergoing warming due to carbon and other greenhouse gas emissions from human activities, such as burning fossils, deforestation, and land use changes.

In a keynote address to the conference, Mr Jarraud reiterated the urgency of action to reduce greenhouse gas emissions from human activities, and sounded a warning note about using geoengineering to try to limit climate change.

Emissions from human activities, particularly the combustion of fossil fuels, are changing atmospheric composition, especially by raising the concentrations of climate - warming gases;

Like DiCaprio's short film Carbon, released in the weeks prior to the United Nations» Climate Summit 2014, Before the Flood is based on the highly debatable hypothesis that carbon dioxide (CO2) emissions from human activities are causing catastrophic climate change.

This is because the planet is not only warming, the climate is changing and becoming more variable with the increase in CO2 emissions from human activity.

Particularly important is curbing emissions from human activities, namely agriculture and the fossil fuel industries.

They simply don't have the power to reduce carbon emissions from human activities, making it nearly impossible for them to deal with the sea ice decline face on.

Apart from widespread damage to infrastructure (roads, houses) in northern territories, resulting annual carbon emissions could eventually amount to 15 - 35 percent of today's yearly emissions from human activities, making the reduction of greenhouse gases in the atmosphere a much more difficult task.

To project future emissions from human activities, we used the SRES higher (A1FI) and lower (B1) emissions scenarios that capture to some extent the uncertainty in future climate due to human decisions [22], with CO2 emissions ranging from slightly less than present - day levels up to four times present - day levels by 2100.

Despite decades of research and thousands of peer - reviewed publications to the contrary, AFP rigidly adheres to the denialist arguments that greenhouse gas emissions from human activities pose no significant danger to Americans — or the rest of the planet.

While the president and top administration officials continue denying the causal connection between carbon emissions from human activity and climate change, many corporations, including utilities like DTE, have accepted it as fact.

of today's yearly emissions from human activities, making the reduction of greenhouse gases in the atmosphere a much more difficult task.

Finally, heavily populated urban areas represent a third source, which includes emissions from human breath and pet waste.

«The verdict is in: Global warming is real and greenhouse - gas emissions from human activity are the main cause.