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 ...

The 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.

Without 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

Condensation Carbon dioxide Methane Ozone Nitrous oxide Chlorofluorocarbon compounds (CFCs)

The main greenhouse gases

Water vapor holds 60% of the thermal radiation

Other greenhouse gases detain 40% of the thermal radiationtion

Among them:

50% - carbon dioxide 18% - methane 14% - freon(CFCs) 6% - nitrous oxide

Sources of greenhouse gases

Carbon dioxide - burning fuel. Methane - mining and coal transport,

agriculture, waste decomposition. Nitrous oxide - the chemical industry, waste

incineration, and tillage. Freons - aluminum, magnesium, use

extinguishing, refrigeration, air conditioning.

Anthropogenic greenhouse gases

Forecast emissions:

Changes in global temperature:

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

Raising the level of the oceans. Changes in the nature of clouds and the

associated climate change. Changing rainfall by region Changing 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.

Problems associated with the greenhouse effect

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

One 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!