Sentences with phrase «as greenhouse gas concentrations»

This rate of sea - level rise is expected to accelerate as the melting of the ice sheets and ocean heat content increases as greenhouse gas concentrations rise.

The results suggest that the current hiatus is a normal instance of internal climate variability, and that long - term warming is likely to resume as greenhouse gas concentrations continue to increase.

The scientific literature is also clear that we can expect an increase in thunderstorm intensity and destructiveness as greenhouse gas concentrations rise (see, for instance, here).

As greenhouse gas concentrations increase, the temperature on the planet increases.

Multiple independent analyses of long - term temperature records show average global temperatures rising as greenhouse gas concentrations have risen.

ii) Theoretical support for a warming effect as greenhouse gas concentration increases ####################### This is evidence for the proposition.

Not exact matches

``... 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.

... A number of scientific studies indicate that most global warming in recent decades is due to the great concentration of greenhouse gases (carbon dioxide, methane, nitrogen oxides and others) released mainly as a result of human activity... Doomsday predictions can no longer be met with irony or disdain.

Politics of deferred gratification Under one of the additional scenarios, known as RCP 4.5, humans take longer to reduce greenhouse gas emissions but eventually do so, and under the other, known as RCP 8.5, carbon dioxide concentrations continue to rise through 2100.

Above - average warmth continues as a result of increasing concentrations of greenhouse gases in the atmosphere

Keeping atmospheric concentrations of greenhouse gases below 550 ppm, let alone going back to 350 ppm or below, will not only require a massive shift in human society — from industry to diet — but also, most likely, new technologies, such as capturing CO2 directly from the air.

On climate action: «The APS reiterates its 2007 call to support actions that will reduce the emissions, and ultimately the concentration, of greenhouse gases, as well as increase the resilience of society to a changing climate.

Other scientists have criticized the planetary boundaries as too generous (for example, allowing too much human appropriation of freshwater flows) or employing the wrong metric (atmospheric concentrations of CO2 rather than cumulative emissions of greenhouse gases).

He acknowledged that the words «climate change» can be controversial among some people, but added, «As far as greenhouse gas emissions and concentrations in the atmosphere, I don't think there's any controversAs far as greenhouse gas emissions and concentrations in the atmosphere, I don't think there's any controversas greenhouse gas emissions and concentrations in the atmosphere, I don't think there's any controversy.

Researchers project that as many as 1,779 annual heat - related deaths could be avoided if the climate adheres to the more moderate of two greenhouse gas trajectories — known as representative concentration pathways 4.5 and 8.5.

Taking factors such as sea surface temperature, greenhouse gases and natural aerosol particles into consideration, the researchers determined that changes in the concentration of black carbon could be the primary driving force behind the observed alterations to the hydrological cycle in the region.

«This underscores that large, sustained changes in global temperature like those observed over the last century require drivers such as increased greenhouse gas concentrations,» said lead author Patrick Brown, a PhD student at Duke's Nicholas School of the Environment.

Non-polar glacial ice holds a wealth of information about past changes in climate, the environment and especially atmospheric composition, such as variations in temperature, atmospheric concentrations of greenhouse gases and emissions of natural aerosols or human - made pollutants... The glaciers therefore hold the memory of former climates and help to predict future environmental changes.

As a result, the concentration of this greenhouse gas is reduced and other sources of organic carbon that are usually applied as biotechnological substrates, such as agricultural products, are no longer requireAs a result, the concentration of this greenhouse gas is reduced and other sources of organic carbon that are usually applied as biotechnological substrates, such as agricultural products, are no longer requireas biotechnological substrates, such as agricultural products, are no longer requireas agricultural products, are no longer required.

The researchers warn, however, that the future evolution of the AMO remains uncertain, with many factors potentially affecting how it interacts with atmospheric circulation patterns, such as Arctic sea ice loss, changes in solar radiation, volcanic eruptions and concentrations of greenhouse gases in the atmosphere.

«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.

After six years of running such simulations, the verdict is in: Increasing greenhouse gas concentrations as a result of burning fossil fuels and cutting down forests increased the risks of flooding in two out of three model runs by more than 90 percent.

The bad news is that such record - breaking downpours, blizzards and sleet storms are likely to continue to get worse as atmospheric greenhouse gas concentrations continue to rise, causing global temperatures to continue to warm and making the atmosphere more and more humid.

The second step involved calculating Earth's energy balance for this time period, using estimates of greenhouse gas concentrations extracted from air bubbles in ice cores, and incorporating astronomical factors, known as Milankovitch Cycles, that effect the planetary heat budget.

«It is true that there are other factors (such as volcanism, the changes in the orbit and the axis of the Earth, the solar cycle), but numerous scientific studies indicate that most of the global warming in recent decades is due to the large concentration of greenhouse gases (carbon dioxide, methane, nitrogen oxide and others) mainly emitted due to human activity.»

In the midst of an unseasonably warm winter in the Pacific Northwest, a comparison of four publicly available climate projections has shown broad agreement that the region will become considerably warmer in the next century if greenhouse gas concentrations in the atmosphere rise to the highest levels projected in the the Intergovernmental Panel on Climate Change (IPCC) «business - as - usual» scenario.

«If the true climate sensitivity really is as high as 5 degrees C -LSB-(9 degrees F)-RSB-, the only way our descendants will find that out is if they stubbornly hold greenhouse gas concentrations constant for centuries at our target stabilization level.»

«(C) global atmospheric concentrations of greenhouse gases, expressed in annual concentration units as well as carbon dioxide equivalents based on 100 - year global warming potentials;

The relative atmospheric concentrations of greenhouse gases as well as aerosol and particulate content coupled with other climate information gives insight into both the importance of these as drivers of temperature as well as how these drivers might couple in either a positive or negative feedback sense (Beckman and Mahoney, 1998).

Climate models generally predict that temperatures should increase in the upper air as well as at the surface if increased concentrations of greenhouse gases are causing the warming.»

«The increased use of clean energy sources that do not emit greenhouse gases or conventional air pollutants... would be doubly beneficial to global food security, as they do not contribute to either climate change or increased surface - ozone concentrations,» she said.

(above) Percent increase in number of days per month exceeding the threshold cold temperatures necessary to cause approximately 50 % mortality in mountain pine beetle populations as projected under two greenhouse gas emission scenarios (i.e., representative concentration pathways; see Climate chapter) at mid century and end - of - century.

This analysis considers two plausible greenhouse gas concentration scenarios: a moderate (stabilized) and more severe (business - as - usual) scenario, referred to as RCP4.5 and RCP8.5, respectively.

Be that as it may, all these studies, despite the large variety in data used, model structure and approach, have one thing in common: without the role of CO2 as a greenhouse gas, i.e. the cooling effect of the lower glacial CO2 concentration, the ice age climate can not be explained.

Global climate change will occur as a result of global warming resulting from the greenhouse effect caused by the retention of heat in the lower atmosphere of the Earth caused by the concentration of gases of various kinds.

It has long been suspected that the low solar activity during the Maunder Minimum was one of the causes of the Little Ice Age, although other factors like a small drop in greenhouse gas concentrations around 1600 and strong volcanic eruptions during that time likely played a role as well.

But there are vast volumes of studies concluding that rising concentrations of greenhouse gases are already influencing the climate and will continue to raise the odds of fiercer floods, drier droughts and other disruptive changes, including a quickening pace of coastal retreats (and all as human populations soar in some of the world's most vulnerable places).

In short, a prudent planner would treat the CH4: CO2 equivalency as ~ 84, meaning that current greenhouse gas concentrations are over 560 ppmve CO2, and current forcing is close to 3.6 w / m2.

The forecast takes into account known contributing factors, such as solar effects, El Nino, greenhouse gases concentrations and other multi-decadal influences.

If we knew ocean heat uptake as well as we know atmospheric temperature change, then we could pin down fairly well the radiative imbalance at the top of the atmosphere, which would give us a fair indication of how much warming is «in the pipeline» given current greenhouse gas concentrations.

But there was little disagreement that playing what amounts to two games of high - stakes poker at the same time by driving up greenhouse - gas concentrations is a bad idea, particularly as ever more people concentrate on coastlines in both rich and poor countries.

As soon as his paper was published (1861) in the Proceedings of the Royal Society, he put out a press release for the London newspapers explaining that this result implied that all past climate changes were now understood and all future climate changes could be predicted simply from a knowledge of the concentrations of these «greenhouse» gases.As soon as his paper was published (1861) in the Proceedings of the Royal Society, he put out a press release for the London newspapers explaining that this result implied that all past climate changes were now understood and all future climate changes could be predicted simply from a knowledge of the concentrations of these «greenhouse» gases.as his paper was published (1861) in the Proceedings of the Royal Society, he put out a press release for the London newspapers explaining that this result implied that all past climate changes were now understood and all future climate changes could be predicted simply from a knowledge of the concentrations of these «greenhouse» gases...

«The current evidence strongly suggests that: (a) hurricanes tend to become more destructive as ocean temperatures rise, and (b) an unchecked rise in greenhouse gas concentrations will very likely increase ocean temperatures further, ultimately overwhelming any natural oscillations.»

Climate models generally predict that temperatures should increase in the upper air as well as at the surface if increased concentrations of greenhouse gases are causing the warming.»

The summer of 2011 is emblematc of the new climatological norms that are emerging as conditions neatly echo longstanding projections of the consequences of steadily raising the concentration of heat - trapping greenhouse gases.

With all the carbon available in the biosphere, the concentration of greenhouse gases such as carbon dioxide and light hydrocarbons had to have been substantially higher in the atmosphere than it is now.

First, there is still a lot of uncertainty about the extent and pace of warming from a particular rise in concentrations of greenhouse gases, and about how fast and far seas will rise as a result.

However, as will be discussed below, it is still not possible to accurately predict the magnitude (if any), timing or impact of climate change as a result of the increase in greenhouse gas concentrations.

It is impossible to know whether or not this event would have taken place if we had not increased the concentration of greenhouse gases in the atmosphere as much as we have.

The report of Susan Solomon's National Research Council Committee on Stabilization Targets for Atmospheric Greenhouse Gas Concentrations is the place to go to see a collection of impacts that have already been observed and will be amplified as the climate changes in ways that have been quantitatively estimated.