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Climate ChangePART I
Malena and IñakiInstituto Santa Cruz
Buenos Aires - Argentina
Climate and WeatherWEATHER: the state
of the air at a particular place and time;, for example, whether it´s warm or cold.
CLIMATE: the average, or typical, weather conditions observed over a long period of time for a given area.
World’s climate It has been getting warmer since 1900. However, this has not occurred evenly across the world’s surface .
(The violet parts are the less-affected zones)
What causes climate change?
The most important natural causes are :
• Volcanic Events• Ocean Currents• Comets• The Sun• The Greenhouse Effect
Any unusual thing that happens on Earth has its global impact, but in the end, everything influences the climate in one way or another.
What is “The GreenHouse Effect”?
• A process by which thermal radiation from a planetary surface is absorbed by atmospheric greenhouse gases.
• The heat caused by infra red radiation is absorbed by "greenhouse gases" such as water vapour, carbon dioxide, ozone and methane, which slows its escape from the atmosphere.
