One of the most significant international problems of the XXI century is a change of planetary climate. Of particular concern is the rapid overall growth in the number of cataclysms observed in recent decades. You’ll find out everything you wanted to know about this world problem.
As a result of studying the materials of meteorological observations carried out in all regions of the globe, it was found that the climate is not constant, and is subject to certain changes. Began in the late XIX century, particularly warming intensified in 1920-30-ies., but then began a slow cooling, which ended in 1960. Studies by geologists the earth crust have shown, that in the past era climate were changes greater than we have now because the changes are due to natural processes.
In addition to physical factors on the global climate has an ever-increasing impact of human activities. According to the latest report of the Intergovernmental Panel (IPCC1) on February 2, 2007, "an increased emission of greenhouse gasses is the biggest cause of climate change as a result of human activity." This influence is beginning to appear a thousand years ago when in connection with the development of agriculture in arid regions has become widely used artificial irrigation. The spread of agriculture in the forest area also led to some changes in climate because of demanded deforestation over large areas.
Global climate change caused by "greenhouse effect" is the most significant international and political challenge. "Greenhouse" shield, which maintains the temperature of the planet, in current conditions sufficient to preserve life, becomes a heat trap which threatens to change the entire biosphere.
The primary cause of climate change is the use of fossil fuels and the inefficient use of produced energy. During the last hundred years, people were dependent on fossil fuels such as oil, coal, gas and used them for their energy needs. The burning of oil, coal, and gas, dumps creation, an increase of development vehicles and irrational agriculture lead to emissions of greenhouse gasses (carbon dioxide, methane, nitrous oxide). These substances get into the atmosphere and increase the "greenhouse" effect that leads to global climate change.
Climate changes facts
- 11 years (1995-2006) were recorded as the warmest since the beginning of the measurement of temperature (1850);
- On average sea level ocean grew by 1.8 mm (1.3 - 2.3) each year from 1961 to 2003. Since 2003, the rate of increase in sea level rose to 3.1 (2.4 - 3.8) mm annually. Together, sea level increased by 0.17 mm;
- Satellite data show that Arctic ice is melting at a speed of 2.7% per decade, and in the summer melting increases to 7.4%;
- Reported enhance long-term droughts in subtropical and tropical areas and this is a disaster for the people that live there;
- Reported increase in the number and intensity of floods that caused more evaporation
- Reported increase in the intensity of tropical cyclones in the North Atlantic Ocean. This was the result of ocean warming and more energy savings
”Greenhouse effect” and global warming or Climate change and global warming
Global warming it is the average temperature increase the Earth's surface. The cause of global warming is the so-called "greenhouse effect." "Greenhouse effect" is a result of the release into the atmosphere of the planet "greenhouse gasses" for example carbon dioxide, methane, various freon and water vapor. "Greenhouse effect" exists long, so long ago that it contributed to the emergence of life on the planet. Without the current atmosphere created by the greenhouse effect, the average temperature on Earth would be -15 degrees Celsius.
After creating the atmospheric layer, gasses allow solar radiation to pass, which heats the earth. But the heat, which allocates land do not leak back into space. Thus, the accumulated heat to warms the planet.
The cause of the threat of global warming is the violation of the control mechanism of process heating and cooling of the earth's surface. Greenhouse effect gasses in the atmosphere are becoming more and more. The Earth is not able to cool more.
Read the continuation of the article in What is climate change? (Part II)
- READ ALSO: What is climate change? (Part IІ)