Sentences with phrase «human greenhouse gas emissions]»

While Christy only considered the possibility that climate models are wrong, Taylor considered three possibilities: (1) the surface temperature record is biased high, (2) a factor other than human greenhouse gas emissions is causing global warming, or (3) the «assumptions about greenhouse gas theory are wrong.»

Multiple lines of scientific evidence overwhelmingly show that human greenhouse gas emissions are the dominant cause of the current global warming, that the consequences of that warming will on the whole be bad, and that there are cost - effective solutions to the problem, of which carbon pricing systems are a critical component.

First, we would rapidly reduce human greenhouse gas emissions to near zero.

The overwhelming scientific evidence tells us that human greenhouse gas emissions are resulting in climate changes that can not be explained by natural causes.

These short - term cycles don't have long - term effects on the Earth's temperature, unlike the continuing upward trend caused by global warming from human greenhouse gas emissions.

So these two articles are suggesting that a grand solar minimum could have a net cooling effect in the ballpark of 1 to 6 °C, depending on how human greenhouse gas emissions change over the next century.

Here's a post from some of Australia's leading climate scientists at tcktcktck.org: «The overwhelming scientific evidence tells us that human greenhouse gas emissions are resulting in climate changes that can not be explained by natural causes.

Several other Democratic congressmen spent their time confirming that all climate science witnesses agreed that the climate is changing and human greenhouse gas emissions are a contributing factor.

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.

The conclusion, «This report shows conclusively that the human greenhouse gas contribution to current warming is insignificant.»

Many of the changes in land - surface temperature can be explained by a combination of volcanoes and a proxy for human greenhouse gas emissions.

Dozens of climate scientists are trying to block the DVD release of a controversial Channel 4 programme that claimed global warming is nothing to do with human greenhouse gas emissions.

Ruddiman proposes that these early human greenhouse gas emissions prevented the inception of an overdue glacial that otherwise would have already started.»

If we examine the climate models chosen by the IPCC to make their projections of future climate change resulting from human greenhouse gas (and particulate) emissions, we find that instead of using models with a 20 percent lower transient climate sensitivity, the transient sensitivity of the models used by the IPCC is the same in the AR5 as in the AR4.

As the atmosphere warms due to human greenhouse gas emissions, it can hold more water vapor.

This suggests that IPCC projections of future global warming, which are based on various possible human greenhouse gas emissions scenarios, are reliable.

For decades, tropical deforestation has been the No. 1 cause of species extinctions and the No. 2 cause of human greenhouse gas emissions, after the burning of fossil fuels.

It is increasing clear that climate models simply predict too much warming from human greenhouse gas emissions.

By comparing values of these parameters from the mid-19 century to now, they can estimate how much the earth warmed in association with human greenhouse gas emissions.

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).

Global Warming alarmists tell us that the world is heating at an unprecedented rate due to the unprecedented output of human greenhouse gas emissions.

Climate scientists can not predict how human greenhouse gas emissions will change in the future, which is a question for the public and policymakers.

Powerful ocean heat pulses of the kind we observe now, when combined with an extraordinary human greenhouse gas heat forcing, also increases the likelihood of another record warm year.

If the alarmists are wrong about even one or two of them, human greenhouse gas emissions move out of the realm of a nuisance requiring a response — whether by governments or via a (presently nonexistent) global property rights regime — and into the realm of speculation.

The results of this study are consistent with the wide body of evidence supporting the settled science that human greenhouse gas emissions are the dominant cause of the current global warming.

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.

In his speech, the President served up the usual red meat for climate partisans, restating the well - established fact that climate change has been incontrovertibly linked to human greenhouse gas emissions while offering dubious assertions about the link between warming and present day natural disasters.

However, there are a number of lines of evidence that have helped to convince climate scientists that the current global warming can be attributed to human greenhouse gas emissions (in particular CO2).

In any realistic scenario, we need to take serious and immediate action to reduce human greenhouse gas emissions.

Over the past several centuries, human greenhouse gas emissions have caused by far the largest radiative forcing (energy imbalance), and thus must be the driver of any observed long - term global warming.

In either scenario we need to take serious action to reduce human greenhouse gas emissions in order to avoid dangerous and potentially catastrophic climate change.

To arrive at their lower climate sensitivity range than the IPCC, Lewis and Curry analysed the Earth's observed temperature change, ocean heat uptake and the level of human greenhouse gas emissions and natural variability.

All of these studies find that humans are responsible for close to 100 % of the observed global warming over the past 50 years, and human greenhouse gas emissions are responsible for close to 150 % of the observed warming, with human aerosol (sulfur dioxide - SO2) emissions offsetting approximately one - third to one - half of that greenhouse warming.

This year's temperatures now appear set to exceed 1998's values by around 0.35 C — or about one - third of the entire warming total seen since large - scale human greenhouse gas emissions began during the late 19th century.

The scientific data and body of research have very clearly established that human greenhouse gas emissions are causing global warming.

The opening paragraph in The Age article is «Evidence for climate change has grown stronger and it is now «virtually certain» that human greenhouse gas emissions trap energy that warms the planet, according to a leaked draft of the next major IPCC report»

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.»

It is important that Clive Palmer understands why human greenhouse gas emissions are responsible for global warming.

So we have a situation in which the latest science on two key issues: how much the earth will warm as a result of human greenhouse gas emissions, and how well climate models perform in projecting the warming, is largely not incorporated into the new IPCC report.

Oil companies are expected to argue human greenhouse gas emissions were the main driver of recent global warming and that it is a problem, but their legal filings contest their liability and the use of courts to settle what's considered a global matter.

All these impacts are the direct result of human greenhouse gas emissions and their forcing effect on the world's climate.

And of course more warming is yet to come from continuing human greenhouse gas emissions.

Moreover, we quantified the consensus as a fraction of those who actually answered the question by providing an estimate of the human greenhouse gas contribution.

Climate modelers are scrambling to try to save their creations» reputations because the one thing that they do not want to have to admit is that they exaggerate the amount that the earth's average temperature will increase as a result of human greenhouse gas emissions.

A linear warming trend plus natural cycles can be mistaken for a step function, but physically the global warming is caused by an external radiative forcing (i.e. human greenhouse gas emissions).

The report notes that this decade is critical in reducing human greenhouse gas emissions, that we have all the technology necessary to do so, and examines the policies of various countries toward that end.

To prevent catastrophic global warming human greenhouse gas emission must cease, but this will also end the aerosol cooling effect and the full heating effect of our «Faustian bargain» will be revealed.

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.