Sentences with phrase «of warming caused by greenhouse gases»

If the maximum cooling ability of aerosols is only 1.0 Wm2, as Stevens suggests, the particles would offset only a third of warming caused by greenhouse gases.

In 1988, Thatcher, as prime minister, became one of the first world leaders to warn of warming caused by greenhouse gases.

Not exact matches

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.

Jacobson said the sum of warming caused by all anthropogenic greenhouse gases — CO2, methane, nitrous oxide, chlorofluorocarbons and some others — plus the warming caused by black and brown carbon will yield a planetary warming effect of 2 degrees Celsius over the 20 - year period simulated by the computer.

«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.

Already, atmospheric levels of carbon dioxide, the leading greenhouse gas, are approaching 400 ppm, and at least the amount of warming caused by that level is likely by century's end.

While a strong El Niño provided a boost to global temperatures last year, the main driver of the planet's temperature surge, as well as other climate trends, is the warming caused by the buildup of greenhouse gases in the atmosphere.

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.

This year has already brought higher temperatures than normal nation - wide, and that trend is expected to continue, in part due to global warming which is caused by rising concentrations of greenhouse gases in the atmosphere.

«It is nearly certain that global warming is caused by greenhouse gases,» she says, and «the best way to convince people of this is to also explain what we do not yet know and why it is so difficult to get those answers.»

The effects of wind changes, which were found to potentially increase temperatures in the Southern Ocean between 660 feet and 2,300 feet below the surface by 2 °C, or nearly 3.6 °F, are over and above the ocean warming that's being caused by the heat - trapping effects of greenhouse gases.

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.»

Making roads more reflective and thereby sending more sunlight back to space helps cool the planet, offsetting some of the atmospheric warming caused by greenhouse gas emissions.

Global warming is the rise in temperatures caused by an increase in the levels of greenhouse gases due to human activity.

Even allowing for the relative strength of the effects, CO2 is still responsible for two - thirds of the additional warming caused by all the greenhouse gases emitted as a result of human activity.

The key conclusions were that: It is «unequivocal» that global warming is occurring; the probability that this is caused by natural climatic processes is less than 5 %; and the probability that this is caused by human emissions of greenhouse gases is over 90 %.

The first report concludes that global warming is happening, and is very likely caused by human emissions of greenhouse gases.

While a strong El Niño has given global temperatures a boost, the main reason for the spate of intensely warm months is the long - term warming of the planet caused by the accumulation of heat - trapping greenhouse gases in the atmosphere, scientists have found.

By the way, in my opinion, the elevated greenhouse gas levels already in the air, combined with the future emissions from machines already built, plus increased natural emissions from carbon sinks becoming carbon emitters (i.e. permafrost melting) will cause the rate of warming to top 0.4 C / decade by mid-centurBy the way, in my opinion, the elevated greenhouse gas levels already in the air, combined with the future emissions from machines already built, plus increased natural emissions from carbon sinks becoming carbon emitters (i.e. permafrost melting) will cause the rate of warming to top 0.4 C / decade by mid-centurby mid-century.

These records show both the influence of the long - term trend in global warming — caused by the continued release of heat - trapping greenhouse gases into the atmosphere — as well as an exceptionally strong El Niño that is altering weather around the world.

The effects of global warming are the ecological and social changes caused (directly or indirectly) by human emissions of greenhouse gases.

«It is thus extremely likely (> 95 % probability) that the greenhouse gas induced warming since the mid-twentieth century was larger than the observed rise in global average temperatures, and extremely likely that anthropogenic forcings were by far the dominant cause of warming.

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.

The WorldWatch Institute estimates that a staggering 51 percent of global greenhouse gas emissions are caused by animal agriculture, and the United Nations has also urged everyone to eat less meat to combat global warming.

The now conventional view on global warming, as stated by the Intergovernmental Panel on Climate Change, is that most of the warming recorded in the past 50 years has been caused by emissions of manmade greenhouse gases.

«A rapid cutback in greenhouse gas emissions could speed up global warming... because current global warming is offset by global dimming — the 2 - 3ºC of cooling cause by industrial pollution, known to scientists as aerosol particles, in the atmosphere.»

Eli, Gavin is arguing above that adding greenhouse gasses would cause the stratosphere to cool even if the stratosphere was not being warmed by the adsorption of UV and that this is the explanantion of stratosphere cooling.

Natural, large - scale climate patterns like the PDO and El Niño - La Niña are superimposed on global warming caused by increasing concentrations of greenhouse gases and landscape changes like deforestation.

Because we understand the energy balance of our Earth, we also know that global warming is caused by greenhouse gases — which have caused the largest imbalance in the radiative energy budget over the last century.

Item 8 could be confusing in having so many messages: «It is extremely likely that more than half of the observed increase in global average surface temperature from 1951 to 2010 was caused by the anthropogenic increase in greenhouse gas... The best estimate of the human - induced contribution to warming is similar to the observed warming over this period....

But President Bush's announcement Wednesday of a plan to halt growth in U.S. greenhouse gas emissions by 2025, while not embracing all the enviro groups want, legitimizes their argument that global warming is caused by humans and an imminent threat to mankind.

By the way, I'd just like to mention that I am far happier to be arguing about the comparative benefits of nuclear power, wind, solar, geothermal, biomass, conservation, efficiency, reforestation, organic agriculture, etc. for quickly reducing CO2 emissions and concentrations, than to be engaged in yet another argument with someone who doesn't believe that CO2 is a greenhouse gas, or that human activities are not causing warming, or that the Earth is cooling, or thinks that AGW is a «liberal» conspiracy to destroy capitalism, etc..

Global average surface temperatures are not expected to change significantly although temperatures at higher latitudes may be expected to decrease to a modest extent because of a reduction in the efficiency of meridional heat transport (offsetting the additional warming anticipated for this environment caused by the build - up of greenhouse gases).

It was caused by natural factors that likely continued through the 20thcentury, making the recent warming more difficult to explain without the impact of increased greenhouse gases.

Because if it dose we might be stuck down the rabit whole for good because of runaway global warming caused by more bushfires and more melting of the permafrost releasing greenhouse gases and establishing a positive feedback loop.

«In a scenario of zeroed CO2 and sulfate aerosol emissions, whether the warming induced by specified constant concentrations of non-CO2 greenhouse gases could slow the CO2 decline following zero emissions or even reverse this trend and cause CO2 to increase over time is assessed.

A positive cloud feedback loop posits a scenario whereby an initial warming of the planet, caused, for example, by increases in greenhouse gases, causes clouds to trap more energy and lead to further warming.

I am convinced that there is a degree of warming caused by anthropological introduction of greenhouse gases.

``... point out that cooling trends are exactly as predicted by increasing greenhouse gas trends,... It is interesting to note that significant solar forcing would have exactly the opposite effect (it would cause warming)» (of the upper atmosphere)

In reality there is a huge diversity of opinion within the skeptic side, like: it's cooling; it's warming (but not as much as GISSTemp says); whatever the temperature is doing, it's caused by cosmic rays, or PDO, or sunspots, or recovery from the LIA...; CO2 is a greenhouse gas (but the feedbacks are negative); CO2 is not a greenhouse gas.....

The degree of warming that is caused by increasing greenhouse gases is known as climate sensitivity.

«In considering the question of human activity and climate change it is essential to distinguish between global warming, which is a progressive increase in the annual mean global temperature, and human - activity - induced greenhouse warming, as may, for example, be caused by the release of greenhouse gases into the atmosphere as a result of fossil fuel combustion or deforestation.»

These analyses indicate that it is likely that greenhouse gases alone would have caused more than the observed warming over the last 50 years of the 20th century, with some warming offset by cooling from natural and other anthropogenic factors, notably aerosols, which have a very short residence time in the atmosphere relative to that of well - mixed greenhouse gases (Schwartz, 1993).

Warming, on the other hand (when it occurs) is caused by «increasing concentrations of greenhouse gases and landscape changes like deforestation».

But it is true that some of the fossil - fuel funded groups that formerly argued that there is no global warming have reacted to criticism by changing their argument to «the climate is always changing,» as if that somehow disproves the scientific consensus that human greenhouse - gas emissions are causing dangerous warming.

Climate change is the warming of the world caused by greenhouse gases that trap some of the heat emanating from the world which would have otherwise escaped into space.

Against such a noisy background, it is hard to detect the signal from any changes caused by humanity's increased economic activity, and consequent release of atmosphere - warming greenhouse gases such as carbon dioxide.

This could happen because SRM masks the warming caused by greenhouse gases rather than reducing the concentration of gases in the atmosphere.

This is the belief backed up by the scientific evidence; in the most recent report by the Intergovernmental Panel on Climate Change (IPCC) in September 2013, scientists agreed that it is «extremely likely» that human emissions of greenhouse gases are causing the planet to warm.

«Currently, scientists estimate the oceans absorb more than 90 percent of the heat trapped by greenhouse gases, and we attribute the global warming to anthropogenic (human - produced) causes.»