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This term was no where in the past century and in this century it is present in every discussions.
Well, Tsunami like floods, Earthquakes and rapid changes in weather and climate was not so frequent in the past decades, as it is now. Moreover, we cannot ignore the massive rise in respiratory problems like bronchitis,asthma and other chronic respiratory diseases in this decades, owing to Green house gases.
According to European Respiratory Review
“A rapid rise has been observed in the number of hot days, such as the 2003 heat wave where temperatures of ≥35°C were reached resulting in ∼40 000 excess deaths across Europe, mostly for cardiopulmonary causes.”
As stated by National Geographic, Green house effect is not a new phenomena.
“ The roots of the greenhouse effect concept lie in the 19th century, when French mathematician Joseph Fourier calculated in 1824 that the Earth would be much colder if it had no atmosphere. In 1896, Swedish scientist Svante Arrhenius was the first to link a rise in carbon dioxide gas from burning fossil fuels with a warming effect. Nearly a century later, American climate scientist James E. Hansen testified to Congress that “The greenhouse effect has been detected and is changing our climate now.”
Only that , in the present decades, its significance has increased massively and we are standing at the brink of worldwide disaster if the Green House Emmisions are not kept under check.
Lets delve a little bit into the topic Green House Effect , which is now the part of major discussions being held worldwide.
This will help us better understand how it can be beneficial and harmful for us.
A greenhouse is an air-tight glass building that is used extensively by commercial plant growers, gardeners and botanists to grow plants which otherwise would not survive cold weather. The purpose of the Greenhouse is to shield crops from excess cold or heat.
The greenhouse buildings are made mostly of translucent material that offers plants in the building maximum access to sunlight. Plants generally need warm temperature, certain humidity and light for growth.
When the sunlight touches the solid surface inside the greenhouse, the surface absorbs some of the energy and converts it into heat (infrared energy).
While light can easily pass through the glass walls, the infrared energy (heat) cannot escape out through the glass walls, due to a longer wavelength. Being trapped inside the building, the heat warms the air inside the greenhouse and creates a favorable atmosphere for the plants inside the building.
There are several benefits of a greenhouse. Using this greenhouse advantage, we are growing various crops in an artificial atmosphere.
This way we are able to enjoy juicy strawberries or warm coffee even in off seasons.
When Sun rays fall on the earth , a part of it is absorbed and a major amount is reflected back into the atmosphere thereby letting the earth cool. Green house gases envelop the earth and doesnt allow the heat to be released back in the atmosphere.
In case of earth the glass house is substituted by envelop of Gases like
Ozone ,Carbon dioxide, Carbon Monoxide, Methane, Nitrous Oxide, CFCs etc.
Some major greenhouse gases that cause the greenhouse effect. They include:
According to National geographic “ Atmospheric levels of greenhouse gases such as carbon dioxide are now higher than at any time in the last 800,000 years”.
So, we are finding the earth more warm in the current decades.
Now if you are wondering why is the greenhouse effect important or is the greenhouse effect good or bad, here’s what you need to know:
You’ll be surprised the know that the presence of the greenhouse gases, which most of us despise for contributing to global warming, is one of the major reasons why life can be sustained in this planet.
Some of the most positive effects of greenhouse gases include the following:
Ozone has already depleted 4% since 1970, creating chances for an ozone hole.
For millennia, the greenhouse effect has helped the planet keep a perfect balance between the amount of absorbed energy and the reflected energy.
Well, the surge in the concentration of greenhouse gases in our atmosphere is undeniable, and we have already seen some critical changes in the climate due to the greenhouse effect. Some disadvantages of the greenhouse effect are quite evident:
Some Facts hard to ignore…
Climate change owing to Global Warming by Green house gases can cause this super common clouds ( Stratocumulus clouds) to go extinct. ( Source: Tapio Schneider, Colleen M. Kaul & Kyle G. Pressel,)
Nature Geoscience Volume 12, pages163–167 (2019)
So, you may not be able to see these type of beautiful puffs in the sky.
“ The First Assessment Report (FAR) of Climate change by IPCC (1990), as well as a supplemental report prepared in 1992, created demand for the establishment of the United Nations Framework Convention on Climate Change (UNFCCC) at the United Nations Conference on Environment and Development (UNCED). This was commonly known as “The Earth Summit” . The Conference was held at Rio de Janeiro, Brazil, in the year 1992.”
Environmentalists has come up with various solutions after this reports.
The Paris Agreement on Climate Change reaffirmed the urgency to stop green house emmisions and regulate temperature at inter- country levels. The Agreement marks a turning point in the battle against climate change and controlling Green house emmisions. With more than 175 countries signing the agreement, future looks a little brighter.
So, we can rightfully expect our future generations to live in a catastrophe free world where they have clean air to breathe and sunlight to bath in plenty.
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