Sentences with phrase «by human emissions»

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

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

The situation today, with global warming driven primarily by human emissions of carbon dioxide from burning fossil fuels, is different from natural cycles, he said.

The recovery of the ozone layer is being delayed by human emissions of greenhouse gases like carbon dioxide and methane.

All five research groups came to the conclusion that last year's heat waves could not have been as severe without the long - term climatic warming caused by human emissions.

What fraction of the global warming was caused by human emissions of CO2?

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.

... it has been shown by the US Geological Survey that current emissions from volcanoes are being dwarfed by human emissions to a ratio of 1/130...

But if they can be linked to warmer conditions globally, then these would be most likely caused by solar variations or cosmic rays, a recovery from the LIA and certainly not due to increases in CO2 levels, which aren't caused by human emissions anyway.

These facts help explain why, in spite of the Earth's air temperature increasing to a level that the IPCC claims is unprecedented in the the past millennium or more, a recent study by Randall et al. (2013) found that the 14 % extra carbon dioxide fertilization caused by human emissions between 1982 and 2010 caused an average worldwide increase in vegetation foliage by 11 % after adjusting the data for precipitation effects.

Do you assert the coral died because the ocean wasn't alkaline enough and that this was caused by human emissions alone?

While the greenhouse effect is undeniably real, and while most scientists agree that there has been a rise in global temperatures caused in some part by human emissions of carbon dioxide, no one knows how much more warming will occur this century or whether it will be dangerous.

In Ecological Footprint accounts, the «carbon Footprint» measures the amount of biological capacity, in global hectares, demanded by human emissions of fossil carbon dioxide.

And, of course, it would be strange if CO2, CH4, etc. exhibited different behavior if put into the atmosphere by natural process versus being put into the atmosphere by human emission.

«What gets obfuscated is the goal of uncovering the warming due to persistent greenhouse forcing [by human emissions],» Karl says.

The evidence of the size of climate zone shifts and the associated changes in atmospheric heights from Mediaeval Warm Period to Little Ice Age to date suggests that the natural solar and ocean induced changes in the effective radiating height are far greater than anything that could be achieved by human emissions.

In this way, studies led by Myles Allen at the University of Oxford have shown that the 2003 European heatwave and 2011 Texas drought were both made more likely by human emissions.

In reality, 2014, 2015 and 2016 have been the three warmest years on record not because of a large El Niño, but because of a long - term warming trend driven by human emissions of greenhouse gases.

«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,» he added.

I have been told that the warming caused by human emissions of greenhouse gases is happening far faster than natural trends normally do and that the fear is that natural systems won't be able to cope quickly enough to this warming.

This is sound and well established science and is relied by upon the proponents of Anthropogenic Global Warming (AGW) to explain why they believe the Earth is warmed by human emissions of Greenhouse Gases (GHGs) to a temperature higher than it would be if we were not releasing emissions.

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 %.

«Far more people believe that climate change is happening and is caused by human emissions,» primatologist Jane Goodall told New Scientist.

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

CO2 does not; the continuous increase in concentration, driven by human emissions, is powerful because it is unidirectional.

But temperatures are running so far ahead of those during the last strong El Niño, in 1997 and 1998, that scientists said the records would not be occurring without an underlying trend caused by human emissions of greenhouse gases.

(2) Prudence requires us to mitigate global warming, even if we are not sure it is being caused by human emissions (and we are sure, and this new skeptical study does not reduce that high level of certainty).

A draft summary prepared for the Intergovernmental Panel on Climate Change says that more than half of global warming is caused by human emissions of greenhouse gases.

For instance, the long - term warming effects of CO2 and other greenhouse gases are largely buffered by the ocean, which absorbs more than 90 percent of the excess heat caused by human emissions of CO2 and other greenhouse gases.