CAUSES OF CLIMATE CHANGE
- THE GREENHOUSE EFFECT
Carbon dioxide, methane, and other gases trap heat in the atmosphere and regulate our climate. In the correct proportion, these gases perform an essential function, ensuring the atmosphere could hold enough heat and the planet could support every kind of life on it. These gases are naturally present in the environment, but humans are adding more of these gases by consuming fossil fuels for energy (coal, oil, and natural gas).
The rise in global temperature is significantly changing our planet's climate, which is forming extreme and irregular weather. For example, heat waves are becoming more common, and many places are undergoing droughts, followed by intense rainfalls.
Earth's atmosphere is 78% nitrogen, 21% oxygen, 0.9% argon, and 0.03% carbon dioxide with minimal percentages of other elements. Our atmosphere also contains water vapour.
The Most Common Green-House Gases Are:
- Carbon dioxide or CO2 is produced anytime when something is burned. It is the most basic greenhouse gas.
- Methane or CH4 is created in many oxidization processes and also by anaerobic breakdown, for example, pig and cow stomachs, pig manure ponds and in flooded rice paddies. Methane breaks down in approximately ten years but is a precursor of ozone, itself an important greenhouse gas.
- Nitrous oxide or nitrous is a chemical compound, an oxide of nitrogen with the formula N2O. Nitrous oxide is a byproduct of fertilizer production and uses, other industrial processes and the combustion of certain materials.
- Fluorinated gases were produced as replacements for ozone-depleting refrigerants, but have shown to be both very long lasting and extremely warming GHGs. They do not have any natural sources but are entirely human-made.
- Sulfur hexafluoride or SF6 is also one of potent greenhouse gas. It is used for specific medical procedures.
What Is the role of Black Carbon In global warming?
Black Carbon is basically the particles of carbon released when there is incomplete combustion of fossil fuels, Biofuels, and biomass. It absorbs the heat of the sun millions of times more effectively than CO2. When the black carbon gets carried away by the winds and deposits over the glaciers and snow, it is very damaging as it directly causes ice to melt.
- HUMANS CAUSE CLIMATE CHANGE
The scientists in the U.S.A and the world have reached a firm conclusion that climate change is true and caused primarily by human activity. Human changes in land use and land cover have changed Earth's reflectivity. Processes such as deforestation, reforestation, desertification, and urbanization often contribute to changes in climate in the places they occur. Organizations like The National Academy of Science, World Meteorological Association (WMO), the Intergovernmental Panel on Climate Change (IPCC) and Intergovernmental Panel on Climate Change (IPCC) have all recognized climate change as a critical threat caused by humans that must be discussed.
IMPACTS OF CLIMATE CHANGE
As the global climate is a connected system, its effect can be seen everywhere:
- Rising Sea Levels:
Climate change impacts rising sea level. In the past 100 years all around the world, the sea level has risen about 8 inches. As the climate change impact, scientists are expecting a rapid and more rise in the sea level in the next 100 years.
Coastal cities have already seen an increased number of flooding events, and by 2050 many such cities may require seawalls to survive. If Greenland or the Antarctic ice shelf fall, sea levels may rise by as much as 20 ft (6 m), flooding, for example, large parts of Florida, the Gulf Coast, New Orleans, and Houston.
- Melting Ice:
Projections suggest, in the next hundred years, the glaciers will be disappeared, Greenland may get green again, and snow will become just a rare phenomenon.
- Territorial Downpours and Powerful Storms:
Climate variation affects the amount of water in the atmosphere and it will increase creating severe downpours rather than steady showers when it will rain.
- Heatwaves and droughts:
Irrespective of downpours in some places, droughts, and prolonged heat waves will grow common. Rising temperatures are hardly surprising as at some places there will be terrible winter storms and on the other hand the hot and dry places will get hotter and drier.
What should be done to control climate change?
Climate change is a global challenge and needs a global resolution. Greenhouse gas effects the same on the atmosphere, irrespective of the fact that they originate in India, U.S.A or China. Consequently, the efforts to reduce global climate change by one country will do very little to slow global warming, until and unless other countries acts as well. Eventually, an effective strategy will require devotions and efforts by all the major countries.
Link To Article: https://youth-journal.org/climate-change-an-undeniable-reality