Climate change is a long-term change in the statistical distribution of weather patterns over periods of time that range from decades to millions of years.
It is a regional change in temperature and weather patterns.
It is not just a nationwide issue, but a global issue.
Carbon Dioxide Causes
Carbon Dioxide from :
- Power Plants (40% of carbon emissions)
- Cars (33% of carbon emissions)
- Airplanes (causes an estimated 3.5% of global warming)
- Buildings (12% of carbon emissions)
- Deforestation (responsible for 20-25% of carbon emissions)
The greenhouse effect is a process by which thermal radiation from a planetary surface is absorbed by atmospheric greenhouse gases , and is re-radiated in all directions. Since part of this re-radiation is back towards the surface, energy is transferred to the surface and the lower atmosphere. As a result, the temperature there is higher than it would be if direct heating by solar radiation were the only warming mechanism The G reenhouse E ffect
The large majority of the Carbon Dioxide emissions come from humans
Increasing green house gas emissions from burning fossil fuels-oil, coal, gas
Pollution, smog from factories
Large forests have been cut down (trees absorb CO 2 and pollution, deforestation creates about 6 billion tons of CO 2 per year)
Increasing world population-more people requires more food, energy, transportation, etc. Farms animals release methane from their wastes.
More people also means more CO 2 production from respiration and less trees to make room for human population
Farm Animals Release Methane From T heir Wastes
T he arctic tundra and wetlands release methane, a greenhouse gas
Earth naturally has a cycle of climate change that occurs every 40, 000 years
T he sun’s solar energy output is changing and naturally increases Earth’s average temperature by about 1 ºC every century
Earth’s orbit and tilt alter in relation to the sun, which changes solar energy output
The C onsequences
R ise in average sea level
C hanges in rain patterns
Increase of extreme climate events
C onsequences on the flora (plants) and fauna (animals)
C hanges in agricultural yields
- Global warming is a worldwide problem, and all countries are going to have to work together as one in order to prevent one of the greatest threats to mankind and our environment.
Why should we care? Global average temperatures are expected to increase by about (1-7°C) by the end of the century.