Sentences with phrase «by human greenhouse gas»

Therefore, I think a statement like «The green bar shows the amount of warming caused by human greenhouse gas emissions during that time.»

The green bar shows the amount of warming caused by human greenhouse gas emissions during that time.

Together, these lines of evidence provide a conceptual and scientific backing to the theory of climate change caused by human greenhouse gas emissions that is simply absent for alternative theories, such as that there is no change or that the change is caused by something different.

However, the amount of warming caused by human greenhouse gas (GHG) emissions is known to a high degree of certainty, and these same studies have all found that GHGs are responsible for over 100 % of the observed warming over this timeframe (Figure 3).

To better assess how climate change caused by human greenhouse gas emissions will likely impact wheat, maize and soybean, an international team of scientists now ran an unprecedentedly comprehensive set of computer simulations of US crop yields.

Coleman went on to add that he based most of his views on the findings of the Nongovernmental International Panel on Climate Change (NIPCC), an international body that says «because it is not a government agency, and because its members are not predisposed to believe climate change is caused by human greenhouse gas emissions, NIPCC is able to offer an independent «second opinion» of the evidence reviewed - or not reviewed - by the Intergovernmental Panel on Climate Change (IPCC) on the issue of global warming.»

Thus it is entirely unsurprising that these short - term effects all aligning in the cooling direction in recent years have offset much of the surface warming caused by human greenhouse gas emissions.

That convention defines climate change as change produced not by all greenhouse gas emissions, but by human greenhouse gas emissions.

There, as with much of Siberia, temperatures have been forced to rapidly warm by human greenhouse gas emissions.

That's because, as Figure 1 demonstrates, the excess heat trapped by human greenhouse gas emissions is primarily stored in the ocean.

An overwhelming 97 % of scientists agree that climate change is being caused by human greenhouse gas emissions.

It should be pointed out here, that the amount of change in downward heat radiation from changes in cloud cover in the experiment, are far greater than the gradual change in warming provided by human greenhouse gas emissions, but the relationship was nevertheless established.

The warm waters across the central and eastern tropical Pacific are boosting global temperatures, which is on top of the long - term warming driven by human greenhouse gas emissions.

There are also concerns that oceans, which currently absorb more than 90 percent of the extra heat being trapped by human greenhouse gas emissions, could eventually release some of that back to the surface, speeding up the surface temperature rise.

Most of the heat being trapped at the Earth's surface by human greenhouse gas emissions is absorbed by the oceans.

Because we are not predisposed to believe climate change is caused by human greenhouse gas emissions, we are able to look at evidence the Intergovernmental Panel on Climate Change (IPCC) ignores.

This suggests that the research community has a sound understanding of what the climate will be like as we move toward a Pliocene - like warmer future caused by human greenhouse gas emissions.»

The main driver for Arctic sea ice's disappearing act is the rising ocean and air temperatures driven by human greenhouse gas emissions.

Of course, the extra heat trapped by human greenhouse gas emissions is likely to play a bigger role than raindrop friction in any atmospheric changes.

No thanks to us: the heatwave was made 35 per cent more likely by human greenhouse gas emissions.»

Oceans are taking in about 90 percent of the excess heat created by human greenhouse gas emissions, but they're also absorbing some of the carbon dioxide (CO2) itself.

Not exact matches

But when asked by Sen. Bob Corker (R - TN) if human activity has contributed to climate change, Tillerson said that «the increase in the greenhouse gas concentrations in the atmosphere are having an effect,» and that «our ability to predict that effect is very limited.»

Those changes have been driven by human - caused greenhouse gas emissions, which are warming the world and causing Earth's climate to change faster than reefs can keep up.

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.»

One problem is that dangerous levels of climate change are exacerbated by positive feedback loops — changes that release more greenhouse gases from nature due to warming driven by humans.

``... a number of scientific studies indicate that most global warming... is due to the great concentration of greenhouse gases released mainly as a result of human activity... these gases do not allow the warmth of the sun's rays reflected by the earth to be dispersed in space.

... modalities, rules and guidelines as to how, and which, additional human - induced activities related to changes in greenhouse gas emissions by sources and removals by sinks in the agricultural soils and the land - use change and forestry... shall be added or subtracted.

Most scientists and climatologists agree that weird weather is at least in part the result of global warming — a steady increase in the average temperature of the surface of the Earth thought to be caused by increased concentrations of greenhouse gasses produced by human activity.

The reason is that if climate change would not be human - caused, then humans would not be able to prevent it by scaling down their greenhouse gas emissions.

Climate change is not driven just by increased greenhouse gas concentrations; other mechanisms — both natural and human - induced — also play a part.

Scientists can measure how much energy greenhouse gases now add (roughly three watts per square meter), but what eludes precise definition is how much other factors — the response of clouds to warming, the cooling role of aerosols, the heat and gas absorbed by oceans, human transformation of the landscape, even the natural variability of solar strength — diminish or strengthen that effect.

In an about - face, the agency agreed that global warming is happening; that humans, by pumping greenhouse gases into the atmosphere, are responsible; and that the American environment is likely to change dramatically over the next century.

It is clear that climate change is happening, driven by human emissions of greenhouse gases, and its impacts will be felt around the world.

«There is a certain ironic satisfaction in seeing a study funded by the Koch Brothers — the greatest funders of climate change denial and disinformation on the planet — demonstrate what scientists have known with some degree of confidence for nearly two decades: that the globe is indeed warming, and that this warming can only be explained by human - caused increases in greenhouse gas concentrations,» he wrote.

In the first study of its kind, scientists have calculated the amount of carbon absorbed by the world's tropical forests and the amounts of greenhouse gas emissions created by loss of trees, as a result of human activity.

The researchers [3] quantified China's current contribution to global «radiative forcing» (the imbalance, of human origin, of our planet's radiation budget), by differentiating between the contributions of long - life greenhouse gases, the ozone and its precursors, as well as aerosols.

That has squeezed out the Quino checkerspot butterfly's habitat, and with the climate changes coming as a result of human greenhouse gas emissions, its listing as an endangered species by the U.S. government may not be enough to save the pretty little butterfly from extinction.

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.

Since levels of greenhouse gases have continued to rise throughout the period, some skeptics have argued that the recent pattern undercuts the theory that global warming in the industrial era has been caused largely by human - made emissions from the burning of fossil fuels.

The scientists looked at the so - called biogenic fluxes or flow of the three greenhouse gases on land that were caused by human activities over the last three decades and subtracted out emissions that existed «naturally» during pre-industrial times.

Scientists can confidently say that Earth is warming due to greenhouse gas emissions caused by humans, but data on climate trends over the Antarctic and the surrounding Southern Ocean only go back to 1979 when regular satellite observations began.

Kyoto regulates all sources of carbon dioxide as well as other greenhouse gases, but reliable long - term data by country are available only for carbon dioxide from burning fossil fuels (which accounts for about two - thirds of the human contribution to global warming).

However, the two reports agree that Earth is undergoing a long - term warming trend that shows no sign of abating, and that rising temperatures are driven by human activity, largely through the production of greenhouse gasses.

(The ocean currently absorbs roughly half of the greenhouse gases, primarily carbon dioxide, that are released by human activity.)

«I agree that carbon dioxide is a greenhouse gas, that greenhouse gas concentrations in the atmosphere are increasing as a result of human activities — primarily burning coal, oil, and natural gas — and that this means the global mean temperature is likely to rise,» Ebell said in the statement released by CEI yesterday.

With the human population continuing to rise by 75 million or more per year and with torrid economic growth in much of the developing world, the burdens of deforestation, pollution, greenhouse gas emissions, species extinction, ocean acidification and other massive threats intensify.

Efforts to conserve panda habitat have benefited both other animals and plants, but also has benefited humans by bolstering forests to sequester greenhouse gases, and retain water and soil.

While the ranking of individual years can be affected by chaotic weather patterns, the long - term trends are attributable to drivers of climate change that right now are dominated by human emissions of greenhouse gases,» said GISS Director Gavin Schmidt.

In fact, the two events were connected by the same weather system, leading some scientists to blame human greenhouse gas emissions.

The world is warming, humans are behind most of the warming, and continued spewing of greenhouse gases would warm the world to dangerous levels by as early as midcentury, the report finds.