Presentation on theme: "On the topic: "Natural climate change" prepared by Vitaliy Krutogolov."— Presentation transcript:
on the topic: "Natural climate change" prepared by Vitaliy Krutogolov
Natural climate change In recent years, we see global warming. Summer gets hotter, winters milder. The average temperature stubbornly creeping up. What is the cause of these changes?
Global warming... TTTThe atmosphere of our planet is made up of various gases. Thanks to some of these solar kept near the Earth's surface, keeping the surface temperature at a level suitable for life. Retaining heat in the Earth's atmosphere, these gases create an effect called """"greenhouse"
Of the total amount of solar energy 20% - absorbed by the atmosphere 34% - reflects the clouds and the earth's surface 46% - comes to the Earth's surface and heats it.
W ithout the greenhouse effect of Earth atmosphere would be an average of 30ºС lower than the present, and the surface of the Earth would be only -18ºС.
The main greenhouse gases CCCCondensation CCCCarbon dioxide MMMMethane OOOOzone NNNNitrous oxide CCCChlorofluorocarbon compounds (CFCs)
The main greenhouse gases WWWWater vapor holds 60% of the thermal radiation OOOOther greenhouse gases detain 40% of the thermal radiationtion
The expected increase in global temperature The actual increase in global temperature The expected increase in global temperature scenarios The most The middle The smallest
Problems associated with the greenhouse effect RRRRaising the level of the oceans. CCCChanges in the nature of clouds and the associated climate change. CCCChanging rainfall by region CCCChanging illumination (global darkening)
According to scientists, because of global warming, sea level by 2100 could rise by 50 cm
Global warming increases the risk of natural disasters such as floods, cyclones, droughts and fires. The number of natural disasters during the 80 years of the twentieth century has doubled compared with the 70th years.
Solutions to the problems of global warming Even small changes in our everyday habits can make a difference in this world. Did you know that the mass of CO2 per car per year is equal to its own weight!
Solutions to the problems of global warming OOOOne of the most interesting ways to reduce greenhouse gas emissions - renewable wind and solar energy to generate electricity. Renewable energy sources do not pollute the environment and are inexhaustible. Thus, the replacement power plants that run on coal, oil and gas, those that use solar and wind energy, helps in the fight against global warming!