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#scichallenge2017 - Climate Change
- 1. Climate Change By: Anastasiya Vakarchuk Beatriz Sousa Gonçalo Cunha
- 2. What is climate change? Climate change is a large-scale, long-term shift in the planet's weather patterns or average temperatures. This could be a change in how much rain a place usually gets in a year or the change of the place's usual temperature for a month or season. 2
- 3. The topics below are the main pieces of evidence for climate change: 3 • Higher temperatures: Since the last ice age, which ended about 11,000 years ago, Earth's climate has been relatively stable at about 14 °C. However, in recent years, the average temperature has been increasing. • Changing Rainfall: In some areas there has been observed an increase in winter rainfalls and a decrease in summer. There is also evidence that the heavy rainfalls have become more intense in a lot of places, especially in North America.
- 4. • Sea Level Rises: Since the 20th century sea levels have risen by about 19cm globally. • Retreating glaciers: Glaciers all over the world, Alps, Rockies, Andes, Himalayas, Africa and Alaska are melting at a extremely fast rate • Ice sheets: The Greenland and Antarctic ice sheets (Which store the majority of the world's fresh water) are both shrinking at an accelerating rate. 22 de julho de 2012 Texto de rodapé aqui4
- 5. The reasons behind climate change The main factor responsible for climate change is the burning of fossil fuels. Since the industrial revolution the amount of coal and oil burnt has vastly increased and therefore there has been more and more greenhouse gases released to the atmosphere (mainly carbon dioxide). Texto de rodapé aqui5
- 6. Other human activities, such as agriculture and deforestation, directly related with the decreased carbon storage also contribute to the proliferation of the greenhouse gases and to the imbalance of the CO2 we emit and the planet's capacity to re-absorb it.
- 7. The amount of CO2 in the atmosphere has increased by about 38% since the Industrial Revolution. This means the extra CO2 will absorb and emit more and more of the Earth's outgoing radiation, and this will further warm our climate As the atmosphere warms, the amount of water vapor it holds also increases Which further adds to the warming effect
- 8. 22 de julho de 2012 Texto de rodapé aqui8
- 9. Even small increases in Earth's temperature caused by the climate change can have severe effects on our planet: • Warming ocean temperatures are associated with stronger and more frequent storms. • Rising sea levels due to the melting of the polar ice caps contribute to the storm damage. • More rainfall during severe weather events, leads to flooding and damage. • An increase in the number and severity wildfires threatens habitats, homes and lives. The resulting heat waves contribute to more human deaths 9
- 10. On a global scale, the economists agree that acting to reduce fossil fuel emissions would be far less expensive than dealing with the consequences of not doing so. But how can every single one of us help to save our planet from fatal consequences and why should we care about doing it? How can we stop the climate from changing so quickly?
- 11. • Climate change affects everyone, humans have adapted to the relatively stable climate we have enjoyed since the last ice age. The warming of our climate will affect our water supplies, agriculture, power and transportation systems and even our own health and safety. • Our decisions today will shape the world our children will live in. Everybody can take actions to help reduce the effects. Not only does it saves the planet but it can also save you money, some can improve our health, therefore it's in our best interest to help: 1
- 12. 1 1.Turn off the lights as you leave the room and also replace the light bulbs with energy-efficient fluorescent bulbs. 2.Walk or bike whenever possible. When travelling long distances, try to take a train or bus rather than flying or driving. 3.Conserve water by fixing drips and leaks. Try to speed shower and also turn off water when brushing your teeth. 4.Wash clothes in cold water and hang clothing to dry outside or inside on a drying rack
- 13. 5. When buying appliances, look for high efficiency units. 6.Recycle and repurpose old items 7. When gardening, choose plants that require minimal watering and better yet plant a tree! 1