There are two primary opposing factors which are the most critical in regard to our rapidly changing biosphere conditions: At face value, these two factors occupy opposite ends of the spectrum.
The average surface temperature of Earth is maintained by a balance of various forms of solar and terrestrial radiation.
Fourier, however, neither used the term greenhouse effect nor credited atmospheric gases with keeping Earth warm. This radiation, unlike visible light, tends to be absorbed by the greenhouse gases in the atmosphere, raising its temperature.
Despite its name, the greenhouse effect is different from the warming in a greenhouse, where panes of glass transmit visible sunlight but hold heat inside the building by trapping warmed air. Created and produced by QA International.
Although the greenhouse effect is a naturally occurring phenomenon, it is possible that the effect could be intensified by the emission of greenhouse gases into the atmosphere as the result of human activity. From the beginning of the Industrial Revolution through the end of the 20th century, the amount of carbon dioxide in the atmosphere increased by roughly 30 percent and the amount of methane more than doubled.
A number of scientists have predicted that human-related increases in atmospheric carbon dioxide and other greenhouse gases could lead by the end of the 21st century to an increase in the global average temperature of 0.Global warming from the increase in greenhouse gases has become a major scientific and political issue during the past decade.
That infrared radiation is trapped by greenhouse gases and particles in a planetary atmosphere and that the atmospheric CO2 level has increased by some 25 percent since because of fossil fuel combustion and land use (largely deforestation) are not controversial.
The greenhouse effect is the process by which absorption and emission of infrared radiation by gases in a planet's atmosphere warm its lower atmosphere and surface. It was proposed by Joseph Fourier in , discovered in by John Tyndall, was first investigated quantitatively by Svante Arrhenius in , and the hypothesis was reported in the popular press as early as Nuclear winter is the severe and prolonged global climatic cooling effect hypothesized to occur after widespread firestorms following a nuclear war.
The hypothesis is based on the fact that such fires can inject soot into the stratosphere, where it can block some direct sunlight from reaching the surface of the Earth.
It is speculated that the resulting cooling would lead to widespread crop. A New Low in Climate Science.
by John L. Daly "Whan that Aprille with his shoures soote - The droughte of March hath perced to the roote, And bathed every veyne in swich licour. The global warming controversy is an ongoing dispute about the effects of humans on global climate and about what policies should be implemented to avoid possible undesirable effects of climate.
Life on Earth has survived vast changes in climate, from a warm period million years ago, when most of the present-day United States was underwater, to the last ice age 20, years ago, when.