Sentences with phrase «gases over the last century»

By then comparing the results of these Industrial and Non-industrial simulated climates, and recording the occurrence of floods like that of Autumn 2000 in each of them, the change in the frequency of occurrence (or «risk») of such a flood was determined, and therefore how much risk is attributable to human - induced emissions of greenhouse gases over the last century.

Not exact matches

Greenhouse gases add those watts by acting as a blanket, trapping the sun's heat; they have warmed Earth by roughly 0.75 degree Celsius over the last century.

«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.

Their findings revealed a weakening and eastward shift of the Walker circulation over the last century due to greenhouse gas emissions.

A new analysis using changes in cloud cover over the tropical Indo - Pacific Ocean showed that a weakening of a major atmospheric circulation system over the last century is due, in part, to increased greenhouse gas emissions.

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.

Over the last century, no single forcing agent is clearer than anthropogenic greenhouse gases, yet zooming into years or decades, modes of variability become the signal, not the noise.

While there is good data over the last century, there were many different changes to planet's radiation balance (greenhouse gases, aerosols, solar forcing, volcanoes, land use changes etc.), some of which are difficult to quantify (for instance the indirect aerosol effects) and whose history is not well known.

Re Mark in SF @ 63: «If C02 is such a profound green house gas, and it has risen from 280ppm to 380ppm over the last century or so -LRB-?)

But, within the media coverage of greenhouse gases and climate that has accumulated over the last half century, there's also a broad body of work that has clearly described the science and its significance for human affairs and the wider nature world.

If C02 is such a profound green house gas, and it has risen from 280ppm to 380ppm over the last century or so -LRB-?)

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).

Adrienne Esposito, Executive Director of Citizens Campaign for the Environment, said, «Over the century, the oil and gas industry has amassed an injurious track record of oil spills and other environmental disasters, which have had significant, lasting impacts on our environment and public health.

Human activities that release carbon dioxide and other greenhouse gases into the atmosphere are largely responsible for the climate change observed over the last century.

The earth's average temperature has jumped by approximately 0.8 degrees Celsius (1.4 degrees Fahrenheit) over the last century due to burning fossil fuels, deforestation, and other land - use changes that emit greenhouse gases.

«Whilst there are certainly other potential drivers of changes in the climate we know that over the last century we have greatly increased the CO2 concentration in the atmosphere and, through detection and attribution analyses, we know that the rising levels of atmospheric CO2 and other greenhouse gases have driven the rise in global temperature,» King said.

«Over the last century, as anthropogenic greenhouse gas emissions have increased... every relevant indicator of public health and welfare has improved dramatically around the world rather than deteriorated.»

The storm would likely not have been as big and powerful as it was, nor would it have likely struck land where it did were it not for the extra greenhouse gasses released by humans over the last century and a half or so.

There has been a net warming of the earth over the last century and a half, and our greenhouse gas emissions are contributing at some level.

Alarmists want to fight the war over whether the greenhouse gas effect of CO2 is true and whether the world has seen warming over the last century, both propositions that skeptics like myself accept.

However, you better hope nobody notices how the skeptics have consistently said this entire time that the IPCC has not conclusively proved human - induced CO2, an otherwise harmless greenhouse gas, is the main driver of what little global warming we've seen over the last century.

It remains true that Earth has warmed more than 1 degree farenheit degrees over last century largely due to the buildup of human - made greenhouse gases... it remains the case that the projections of future climate change are every bit of discouraging as they were before the recent flap began.»

Scientists from the Center for Arctic Gas Hydrate (CAGE), Environment and Climate at the Arctic University of Norway, published a study in June 2017, describing over a hundred ocean sediment craters, some 3,000 meters wide and up to 300 meters deep, formed due to explosive eruptions, attributed to destabilizing methane hydrates, following ice - sheet retreat during the last glacial period, around 12,000 years ago, a few centuries after the Bølling - Allerød warming.

The Great Global Warming Swindle «documentary» purports to prove that the warming we have experienced over the last century is, in fact, unrelated to the more than 300 billion tonnes of heat - trapping carbon dioxide (CO2) and other greenhouse gases that we have released into the atmosphere since the furnaces of the industrial revolution were first lit.