Global warming, the phenomenon of increasing average air temperatures near the surface of Earth over the past one to two centuries. Climate. Find out what NRCM is doing—and what you can do—to help reduce Maine global warming pollution and climate change and advocate for clean, healthy air. Global warming is the increase of average world temperatures as a result of what is known as the greenhouse effect. Certain gases in the atmosphere act like.


Author: Kenny Gleason
Country: Dominica
Language: English
Genre: Education
Published: 20 May 2014
Pages: 766
PDF File Size: 31.48 Mb
ePub File Size: 6.6 Mb
ISBN: 270-3-96118-844-8
Downloads: 94515
Price: Free
Uploader: Kenny Gleason


Global warming - Wikipedia

Although more greenhouse gases are emitted in the Northern than in evs project on global warming Southern Hemisphere, this does not contribute to the difference in warming because the major greenhouse gases persist long enough to diffuse within and between the two hemispheres.

One climate commitment study concluded that if greenhouse gases were stabilized at year levels, surface temperatures would still increase by about 0.

Some of this surface warming would be driven by past natural forcings which have not yet reached equilibrium in the climate system. Some climatologists have criticized the attention that the popular press gives to "warmest year" statistics.

Global warming

Attribution of recent climate change By itself, the climate system may generate random changes in global temperatures for years to decades at a time, but long-term changes emanate only from so-called external evs project on global warming.

Greenhouse gasGreenhouse effectRadiative forcingCarbon dioxide in Earth's atmosphereand Earth's energy budget 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 indiscovered in by John Tyndall[61] was first investigated quantitatively by Svante Arrhenius in[62] and its scientific description was developed in the evs project on global warming through s by Guy Stewart Callendar.

The rest of this increase is caused mostly by changes in land-use, particularly deforestation. According to professor Brian Hoskinsthis is likely the first time CO2 levels have been this high for about 4.


Attributions of emissions due to land-use change are subject to considerable uncertainty. Atmospheric particles from these and other sources could have a large effect on climate through the aerosol indirect effect. Global dimminga gradual reduction in the amount of global direct irradiance at the Earth's surface, was observed from evs project on global warming at least Large volcanic eruptions can affect the global climate over only a few years.

By contrast, the movement of continents around the world over hundreds of millions of years can also affect global climate, but only over these much longer time scales. Palaeoclimatology is the study of climate and climate change prior to the period of direct measurements.

It has been estimated that, at the beginning of the industrial age in the midth century, carbon dioxide concentrations in the atmosphere were roughly parts per million ppm. By the middle ofcarbon dioxide concentrations had briefly reached evs project on global warming, and, if fossil fuels continue to be burned at current rates, they are projected to reach ppm by the midst century—essentially, a doubling evs project on global warming carbon dioxide concentrations in years.

Some incoming sunlight is reflected by Earth's atmosphere and surface, but most is absorbed by the surface, which is warmed.

Infrared IR radiation is then emitted from the surface. The second criterion is of a historical nature; industrialisation, the source of most emissions contributing to climate change, started in different periods in different countries in many countries, it has not started yet.

Global warming | Definition, Causes, & Effects |

Lastly, some countries are now beyond the most intense phase of industrial development offshoring of several polluting manufacturing activities is evidence of this ; of several polluting manufacturing activities is evidence of this ; on the evs project on global warming, several economies still count on manufacturing for development and this generates a high amount of emissions causing climate change, especially when they cannot rely on the environment-friendly technologies and know-how which are the monopoly of more evs project on global warming advanced countries.

The convergence underpinning the creation of a shared road map of measures to counter climate change should be based on these three factors. Guido Viale — Cies Onlus Short, medium and long term effects of CC Over the past decades, climate change has caused a variety of effects on human and natural systems on all continents; as global warming increases, over the next few years other impacts are expected in the short term.


Many terrestrial, freshwater and marine species have shifted their geographic ranges and migratory habits in response to climate change. The speed of current climate change is higher than in the evs project on global warming, making it more difficult for species to adapt; for this reason it is expected that global warming will be a very important element in the increasing extinction rate of living species.