Sentences with phrase «atmosphere over the past century»

Not exact matches

If you had asked an expert over the past half century, you would have heard two general possibilities: Either the winds go as deep as 10,000 kilometers from the cloud tops and are driven by heat rising from those depths or they are very shallow and confined to just the top few hundred kilometers of Jupiter's atmosphere.

The researchers have predicted that increasing smog would prevent as much as 263 billion metric tons of carbon from being taken out of the atmosphere by plants over the past and coming century, though this depends on how tropical plants respond to O3 pollution.

Extrapolating from their forest study, the researchers estimate that over this century the warming induced from global soil loss, at the rate they monitored, will be «equivalent to the past two decades of carbon emissions from fossil fuel burning and is comparable in magnitude to the cumulative carbon losses to the atmosphere due to human - driven land use change during the past two centuries.»

In short, an objective look at the data is equivocal at best as to the true trend in the tropical Pacific ocean - atmosphere system over the past century.

Some of these climate drivers result in warming and others lead to cooling, but when all the natural and human - induced climate drivers are stacked up and compared to one another, the accumulation of human - released heat - trapping gases in the atmosphere is so large that it has very likely swamped other climate drivers over the past half century, leading to observed global warming.

In fact, the ocean has absorbed so much heat — about 20 times as much as the atmosphere over the past half - century — that some models suggest that it is likely to warm the air another degree Fahrenheit (0.55 ° Celsius) worldwide over the coming decades.

«Thus, human beings are now carrying out a large scale geophysical experiment of the kind that could not have happened in the past... Within a few centuries we are returning to the atmosphere and oceans the concentrated organic carbon stored in sedimentary rocks over hundreds of millions of years.»

Some of this climate change may be due to the CO2 emitted to the atmosphere by the burning of fossil fuels over the past century, although an inspection of regional climate data shows most of the Sierra warming occurred from 1910 through the early 1930s, long before the major emissions.

The pattern of temperature change through the layers of the atmosphere, with warming near the surface and cooling higher up in the stratosphere, further confirms that it is the buildup of heat - trapping gases (also known as «greenhouse gases») that has caused most of the Earth's warming over the past half century.

However, 97 percent of climate scientists agree that humans have changed Earth's atmosphere in dramatic ways over the past two centuries, resulting in global warming.

Over the past century, human activities have released large amounts of carbon dioxide and other greenhouse gases into the atmosphere.

In page 196 of the Stern Review, which you sited later, it says «Over the past two centuries, around 2000 Gt CO2 (Gt = billion tonnes) have been released into the atmosphere through human activities (mainly from burning fossil fuels and land - use changes).

Over the past two centuries, forest conversion and forest management have contributed a substantial fraction of the excess CO2 observed in the atmosphere.

This, together with an increasingly energy - intensive and carbon - intensive economy over the past century, has caused the rapid build up of anthropogenic greenhouse gases in Earth's atmosphere.....