Every single day, humans emit greenhouse gases into Earth’s atmosphere. These gases keep Earth in a life-supporting temperature of about 15 degrees Celsius, but too much of these gases can also eradicate life too. Since the Industrial Revolution, greenhouse gas emissions have increased. The excess of these gases now become the causes of life-threatening problems. Excess of greenhouse gases in the atmosphere is harmful to the environment because it causes global warming, increases the acidity of the ocean, and depletes the ozone layer.
If it were not for the amount of greenhouse gas in the atmosphere, sea ice and glaciers would not continue to melt, therefore some of the world’s most interesting species would not be in danger. Carbon dioxide is a minor but vital element that is needed for the earth to thrive. We humans intake oxygen and exhale carbon dioxide, from there on, trees and plants absorb that excess carbon dioxide. Trees continue to absorb excess CO2, however, agriculture and deforestation have caused for an even higher increase of carbon dioxide. Since there are less trees on the earth’s surface, the excess carbon dioxide that we as humans let off, is unable to be absorbed.
Introduction Global warming is a phenomenon that occurs when the earth’s atmosphere traps heat radiating from Earth toward space. Initially the sunlight transmitted was meant to pass through the atmosphere, warm the Earth’s surface, and otherwise pass freely into space. But most of the outgoing heat, however, is absorbed by the accumulated greenhouse molecules in the atmosphere and is re-emitted in all directions, ultimately leading to the warming of the planet. Over the past 50 years, the average global temperature has increased at an unsettling speed. Some human activities like mining and the burning of fossil fuels, emit CO2 and other greenhouse gases into the air.
(WWF, 2014) At current, there is an excess amount of greenhouse gases and the earth is warming at rapid rates. The current debate among many people is whether global warming is a man-made or natural occurrence. Both factors emit greenhouse gases such as carbon dioxide and methane and both are influencing the increase in temperature of the world. It is believed that volcanic action and the suns cycles are both influences of natural global warming. A drop in the activity of volcanic eruptions in the early 20th century may have had some effect on global heating.
Greenhouse gases include Water Vapour, Carbon Dioxide, Methane, Nitrous Oxide, Ozone and some artificial chemicals such as Chlorofluorocarbons. Solar radiation reaches the earth’s atmosphere where some of this is light reflected back into space; The rest of the sun’s energy is absorbed by land and the oceans heating earth; Heat radiates from the earth towards space; Some of this heat is trapped by Greenhouse gases in the atmosphere keeping the earth warm enough to sustain life; Human activities such as burning fuels, Agricultural and Land clearing are increasing the amount of greenhouse gases released into atmosphere and
Greenhouse gases in the atmosphere-Carbon Dioxide, Water vapor and Methane. These gases allow short wavelength radiation from the sun to pass through to the earth’s atmosphere and the solar energy is absorbed by the earth’s surface and lower atmosphere shown in Figure 1. It is then converted to long wavelength thermal radiation and the earth radiates it back to space. Some of the energy escapes through the atmosphere and some is absorbed the greenhouse gases. This causes fluctuations in the temperature, causing climate change.
When we burn fuels like coal or petroleum, carbon dioxide will be released into the air. We have been using more and more energy over the past years, that of course must have impact on how much carbon dioxide flies in the air. Each year tons of hectare’s wood are getting lost. Plants and trees use carbon dioxide to grow, if we would have a worldwide deforestation, it must mean that we don’t have enough trees to adsorb those extra Carbon dioxide we’ve produced with the making of energy. This means more Carbon dioxide in the air, which means that there is more heat trapped inside our eco-system.
Question: Discuss about global warming and its impact on developing and developed country. Answer: Global warming refers to the increase the average surface temperature of Earth due to effect of greenhouse gases, such as carbon dioxide which is caused due to burning of fossil fuels or from deforestation. The increase in carbon dioxide leads to melting of polar ice caps which increases the sea level and pose danger for the people. The amount of heat which is trapped in the atmosphere depends upon the concentration of greenhouse gases and the time they stay in the atmosphere. The major greenhouse gases are carbon dioxide, methane, ozone, nitrous oxide and water vapour.
The expected effects of climate change due to global warming include the rise in the global temperature, changing precipitation, rising sea levels and the possible expansion of arid areas in the subtropics. The arctic is anticipated to see a huge rise in temperature due to the continuous retreat of sea ice and glaciers. Other expected changes in the globe include droughts, heat waves, heavy snowfall, ocean acidification, heavy rainfall, species extinction caused by the changing temperature and an even more rampant extreme weather happening. Effects significantly affecting humans may include the destruction of populated areas due to floods and possible decrease in crop yields threatening the food security. The responses that are likely to be implemented due to global warming by societies include the adaptation to its vast effects, moderation of the emissions, possible advance engineering in the climatic field and the development of resilient building