Global Warming (Junior ID-12)

Global Warming

Participant ID – 12
Medhajunior, Grade, Unknown, India

                       
Global warming is the most biggest disease of today.Global warming is the increase in the average temperature of the Earth’s near-surface air and oceans since the mid-twentieth century and its projected continuation. The  IPCC concludes that greenhouse anthropogenic  gases  are responsible for most of the observed temperature increase since the middle of the twentieth century, and that natural phenomena such as solar variation and volcanoes probably had a small warming effect from pre-industrial times to 1950 and a small cooling effect afterward.The continuing retreat of glacier permafrost and sea ice is expected, with the Arctic region being particularly affected. Other likely effects include shrinkage of the Amazon rainforest and Boreal forests, increases in the intensity of extreme weather events, species extinctions and changes in agricultural yields.Political and public debate continues regarding the appropriate response to global warming. The available options are mitigation to reduce further emissions; adaptation to reduce the damage caused by warming; and, more speculatively, geoengineering to reverse global warming.The Earth’s climate changes in response to external forcings, including changes in greenhouse gas concentrations, variations in Earth’s orbit around the Sun, changes in solar luminosity, and volcanic eruptions.
The greenhouse effect was discovered by Joseph Fourier in 1824 and first investigated quantitatively by Svante Arrhenius in 1896It is the process by which absorption and emission of infrared radiation by atmospheric gases warm a planet’s lower atmosphere and surface. Existence of the greenhouse effect as such is not disputed even by those who do not agree that the recent temperature increase is attributable to human activity. The question is instead how the strength of the greenhouse effect changes when human activity increases the atmospheric concentrations of greenhouse gases
Naturally occurring greenhouse gases have a mean warming effect of about 33 °C (59 °F). The major greenhouse gases are water vapor, which causes about 36–70 percent of the greenhouse effect (not including clouds carbon dioxide (CO2), which causes 9–26 percent methane(CH4), which causes 4–9 percent; and ozone, which causes 3–7 percent.
The destruction of stratospheric ozone by chlorofluorocarbons is sometimes cited in relation to global warming. Although there are a few areas of linkage the relationship between the two is not strong. Reduction of stratospheric ozone has a cooling influence, but substantial ozone depletion did not occur until the late 1970s.[ Tropospheric ozone is a positive forcing and contributes to surface warming.
The effects are coming closer to an ice age. We have to stop all this pollution so that all the ice doesnt melt and polar bears and Arctic animals like the polar bears dont die
There is ofcourse a big hand of our earth to give us life for living.
I will try my best to protect my environment from getting polluted.

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