Sentences with phrase «as emissions from human activities»

As emissions from human activities increase atmospheric carbon dioxide, they, in turn, are modifying the chemical structure of global waters, making them more acidic.

Not exact matches

Marine biodiversity is in jeopardy from human activities such as acidification from carbon emissions, posing an existential threat to many marine animals, Wiens said.

This stability in methane levels had led scientists to believe that emissions of the gas from natural sources like livestock and wetlands, as well as from human activities like coal and gas production, were balanced by the rate of destruction of methane in the atmosphere.

Mercury emissions from human activities take several forms that behave differently in the atmosphere Oxidized mercury, notated as Hg (II), generally settles or is rained out of the atmosphere close to emission sources.

But based on that data, they estimate that emissions from abandoned wells represents as much as 10 percent of methane from human activities in Pennsylvania — about the same amount as caused by current oil and gas production.

As more carbon dioxide enters the atmosphere, the global ocean soaks up much of the excess, storing roughly 30 percent of the carbon dioxide emissions coming from human activities.

«The model we developed and applied couples biospheric feedbacks from oceans, atmosphere, and land with human activities, such as fossil fuel emissions, agriculture, and land use, which eliminates important sources of uncertainty from projected climate outcomes,» said Thornton, leader of the Terrestrial Systems Modeling group in ORNL's Environmental Sciences Division and deputy director of ORNL's Climate Change Science Institute.

These gases come from human activities such as combustion of coal and oil as well as natural sources such as emissions from plants.

When aerosols from human activities such as industrial plant and vehicle emissions are added to the system, the energy budget has to deal with the increase.

In a move widely interpreted as his effort to «out green» Gore, Bush pledged to include carbon dioxide, the main heat - trapping emission from human activities, in a basket of restricted power plant pollutants.

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.

But the IPCC concerns itself with consideration of anthropogenic (i.e. man - made) global warming (AGW) as a result of emissions of greenhouse gases (notably carbon dioxide, CO2) from human activities.

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.

OVER-EMPHASIS ON INDUSTRIAL CO2 emissions as the dominant «forcing agent» on global temperatures & weather dynamics obscures regional impacts on weather from human industrial and agricultural activities (R. Pielke).

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.

While the Kyoto Protocol had already been set into place as the primary solution to climate change, the historian of science Stuart Weart marks the point at the year 2001 where climate scientists had actually reached a consensus that human activity was warming the planet via GHG emissions and land - use changes, the former largely from fossil fuel use.

Meanwhile, emissions of carbon dioxide from human activities may be decreasing; he said they shrank slightly in 1998 and 1999, even as the global economy grew.

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.

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.

NASA, the National Oceanic and Atmospheric Administration and mainstream scientists in general have reached wide agreement that global warming is primarily caused by CO2 emissions into the atmosphere resulting from human activity, as this Associated Press article makes clear.

Some come from natural sources such as marshes and other wetlands but a bulk of methane emission comes from human activities that include cattle operations.

As best researchers can tell, the oceans are taking up about a quarter of the carbon emissions arising from human activities.

In other words, the EF defines carbon uptake in forests as the single mechanism for offsetting human emissions of greenhouse gases from industrial activity to the atmosphere.

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.

Perhaps the most important issue in all this is, as the Royal Society pointed out in their assessment of geoengineering, the first and foremost thing we have to do to stop climate change is radically limit greenhouse gas emissions resulting from human activity — stopping burning fossil fuels and stopping deforestation are at the top of list for how to do that.

The identification of other, sometimes more powerful, greenhouse gases such as methane, the contributions to atmospheric carbon dioxide from other human activities such as deforestation and cement manufacture, better understanding of the temperature - changing properties of atmospheric pollution such as sulphur emissions, aerosols and their importance in the post-1940s northern hemisphere cooling: the knowledge - base was increasing year by year.

As I understand it, though, there has been an uptick in recent years, and before that stabilization may have been partly due to reduced emissions of methane (including natural gas leakage) from human activity.

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.