The Impacts of Greenhouse Gases on Global Warming

Global warming is the rise in the average temperature of Earth's atmosphere and oceans since the late 19th century.

Since the early 18th century, Earth's mean surface temperature has increased by about 1.4 °C

Global Warming

http://www.youtube.com/watch?v=pG41xDxrzI8&feature=related

What Causes Global Warming

Global Warmin

g

Greenhouse gases

Particulates and soot

Solar activity

Gases that trap heat in the atmosphere are called greenhouse gases.  Water vapor (H2O) Carbon dioxide (CO2) Methane (CH4) Nitrous oxide (N2O) Ozone (O3) Fluorinated gases (CFCs)

What is greenhouse gases

U.S. Greenhouse Gas Emissions in 2010

The Greenhouse Effect is the effect of greenhouse gases in the Earth’s atmosphere trapping heat that is released from the Earth.

Greenhouse Effect

Most greenhouse gases have both natural and human-caused sources

Carbon dioxide Burning fossil fuels (coal, natural gas and oil) Solid waste, trees and wood products, and also

as a result of certain chemical reactions

Greenhouse Gases Sources

Nitrous oxide Agricultural and industrial activities Combustion of fossil fuels and solid waste.

Methane Production and transport of coal, natural gas,

and oil. Livestock and other agricultural practices.

Greenhouse Gases Sources

Impacts

Physical impacts

Social systemsBiological systems

Extreme weather Heat waves Tornadoes Thunderstorms Cold waves

Physical impacts

Glacier retreat and disappearance

Future changes in glaciers: Mountainous areas in Europe

will face glacier retreat In Polar regions, there will be

reductions in glacier extent and the thickness of glaciers.

Physical impacts

Ocean acidification The ongoing decrease in the

pH of the Earth 's oceans , caused by the uptake of carbon dioxide from the atmosphere .

This ongoing acidification of the oceans poses a threat to the food chains connected with the oceans.

Physical impacts

Food supply Increasing the frequency of extreme events,

and modified weed, pest, and pathogen pressure.

Low-latitude areas are at most risk of having decreased crop yields.

Health Change the range of some infectious disease

vectors. e.g Mosquito can infect malaria.

Social systems

Extreme weather Global warming had strongly

affected natural biological systems, such as plants and animals

In the Northern Hemisphere, species are almost uniformly moving their ranges northward and up in elevation in search of cooler temperatures.

Biological systems

Government Reduce emissions of greenhouse gases Improve the energy efficiency and vehicle fuel

economy. Increases the renewable sources, such as wind,

solar power, hydrogen sources, biofuels resource

Set up laws to reduce emissions from factories

What We Can Do?

What We Can Do?

Low-carbon life means lifestyle to minimize the energy consumed, thereby reducing carbon dioxide emissions. less meat more bicycles less light

Low-carbon Life

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Reference

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