Introduction to Greenhouse gases
Each year the temperature of the earth is rising in an unnoticeable way. Environmental scientists have predicted that, if global warming continued to rise at this pace, many species strike extinction due to heat sensitivity. Additionally, the natural resources necessary for living organisms are depleting at an alarming pace to further add the risk. A lot of factors surrounding the phenomenon of global warming with the temperature of the earth being on the top of the list. Increased global temperature is closely linked with the green gas effect. The green gas effect is due to the combination of water vapour, carbon dioxide, methane, nitrous oxide, ozone and some artificial chemicals such as chlorofluorocarbons (CFCs) that spread in the atmosphere. As these gases accumulate, the atmospheric heat fails to distribute evenly. The heat-trapping mechanism of CFCs accelerates the earth`s temperature in a rapid manner. This article briefs the basic concepts of green gas effects and its relationship with global warming.
Mechanism of global warming
Before moving on to the topic of global warming, it is necessary to be familiar with greenhouse gas effects. Earth is being bombarded with high-intensity UV radiation and it is even stronger in some temperate regions of the earth. UV rays are nothing but the directly emitted rays from sunlight. Unprotected exposure of skin to UV rays is harmful as they have a shorter wavelength and high energy level causing heatstroke. 30% of the radiation that hits the earth’s surface will be immediately reflected back to space and the residual 70% heat enter into the oceans and the atmosphere. An imbalance in the amount of heat transfer between the atmosphere and earth including oceans causes the greenhouse effect. To put it another way, heat absorption by the earth and oceans is greater than the heat loss. "Similarly, a green gas phenomenon works like a greenhouse that allows only the incoming sunlight but not outgoing, consequently, the temperature inside the house remains warm, this will encourage photosynthesis. The similar mechanism happens in the ozone layer. However, if there are no green gases, the atmospheric temperatures would have dropped well below 120 or even lesser. But unfortunately, in recent days, we are voluntarily intervening with the environment resulting in the rise of atmospheric temperature beyond 50oC. and this is known as global warming.
Impact of greenhouse gases
The UV rays are absorbed by the gas molecules are being trapped tightly. Consequently, the resulting heat produces a drastic climatic change. The combination of heat and gases together known as greenhouse gases. Furthermore, the heated gases combine with the CO2 to escalate the temperature beyond limits. In addition to CO2, some of the factors that trigger the earth`s temperature are water vapour, methane, nitrous oxide (N2O) and CFCs(chlorofluorocarbons).CFCs are abundantly used in refrigerators and Air conditioners. The pie chart below depicts the proportion of various gases that form the greenhouse gases.
Managing greenhouse gas effects
Some of the behaviours that can block or reduce the intensity of global warming are;
Plant more plants and grow some useful trees as a part of the routine.
Use fuel-efficient cars, eco-friendly vehicles and gas engine vehicles instead of carbon emitted diesel and petrol ones.
Use of public transport, mass transit, cycles that have no motors, traditional horse carts.
Use more efficient home appliances.
Use fluorescent light sources (tube lights) rather than filament sources that produce an excess of heat.
Impose legal action against the deforestation.
Most importantly, educate the public about all these.
What are green gases, mention the most common green gases?
What is a greenhouse? Explain about how it affects the earth?
How can the ozone layer protect us from the effects of green gases?
- Explain the strategies to manage greenhouse effects.