What is climate change,Greenhouse gases and Global warming?

What is climate change?

Established researchers and governments over the world are in assertion - the atmosphere is changing.

              climate change

What are Greenhouse gases and Global warming? what is climate change?

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Greenhouse effect 

The earth is heated by sunlight and some of the heat that is absorbed by the earth is radiated back into space. However, some of the gases in the lower atmosphere acting like glass allow the incoming solar radiations (in the range of 300 – 2500nm) but do not allow the earth to radiate the heat back into space. In other words, these gases in the atmosphere are transparent to sunlight coming in but they strongly absorb the infrared radiation, which the earth sends back as heat. This result into the heating of the earth surface by this phenomenon called the “Green House Effect”.

Greenhouse gases and Global warming

The gases responsible for greenhouse effect are CO₂, water vapor, CH₄ and man-made CFC’s. In fact, greenhouse gases, particularly CO₂ and water vapor are responsible for keeping our planet warm and thus sustaining life on earth. If the greenhouse gases are very less or totally absent in the atmosphere then the average temperature on earth would have been at sub-zero level. But if the concentration of the greenhouse gases is larger, they may trap too much heat which can lead to excessive heating of the earth, i.e. global warming.

Consequences

1.      Rise in temperature on earth surface due to the high level of CO₂.

2.      Adverse effect on world food production.

3.      Rise in sea level due to the melting of polar ice caps.

4.      A decrease in biological productivity of oceans.

Minimization

1.      Reduction in the use of fossil fuel.

2.      Use of alternate sources of energy.

3.      Conservation of forests, extensive deforestation.

4.      Reduction in use of automobiles and development of more efficient automobile engines.

5.      The ban on CFC’s and nuclear explosions.

In any case, what is climate change? What is causing it? What’s more, in what manner will it influence us?

The atmosphere can be portrayed as the normal climate over some stretch of time. Environmental change implies a noteworthy change in the proportions of atmosphere, for example, temperature, precipitation, or wind, going on for an all-encompassing period – decades or more. The Earth's atmosphere has changed commonly amid the planet's history, with occasions extending from ice ages to significant lots of warmth. What's distinctive about this time of the world's history is that human exercises are essentially adding to common environmental change through our emanations of ozone-harming substances. This obstruction is bringing about expanded air and sea temperatures, dry spell, liquefying ice and snow, rising ocean levels, expanded precipitation, flooding, and different impacts.

So what causes environmental change?

Environmental change can result from regular procedures and variables and all the more as of late because of human exercises through our emanations of ozone-depleting substances. Instances of regular elements incorporate;

•             Changes in the sun's power

•             Volcanic ejections, or moderate changes in the Earth's circle around the sun

•             Natural forms inside the atmosphere framework, for example, changes in sea momentum flow

Be that as it may, the current worldwide point is to handle environmental change coming about because of human exercises whose ozone-depleting substance outflows are changing the synthesis of the world's climate. The Intergovernmental Panel on Climate Change.

'The vast majority of the watched increment in worldwide normal temperatures since the mid-twentieth century is likely because of the watched increment in anthropogenic (created by people) ozone-harming substance outflows' (greenhouse gasses)

Instances of human exercises adding to environmental change incorporate;

•             Carbon dioxide discharges through copying petroleum derivatives, for example, coal, oil and gas and peat

•             Methane and nitrous oxide discharges from agribusiness

•             Emissions through land use changes, for example, deforestation, reforestation, urbanization, desertification,

These outflows that are changing the arrangement of the earth’s air are named the Greenhouse impact. For as far back as 200 years, the consuming of petroleum products, for example, coal and oil, and deforestation have made the groupings of warmth catching ozone-harming substances increment essentially in our environment. These gases keep warm from getting away to space, to some degree like the glass boards of a nursery.

   The expanded outflows to the environment of ozone-harming substances imply that present dimensions of gases far surpass their regular reaches. The figure beneath demonstrates the dimensions of certain ozone-harming substances in the air in the course of the most recent 2000 years.

Ozone depletion

       This ascent in ozone-depleting substances has expanded the measure of vitality being caught in the atmosphere framework. The outcomes of this are most plainly obvious in the worldwide temperature records, which demonstrate that, by and large, the worldwide temperature has expanded by 0.8 degrees centigrade (ºC) above pre-modern dimensions. Proceeded with discharges at or above current dimensions would create additional warming and result in changes in the worldwide atmosphere framework amid the 21st century that would probably be bigger than those seen amid the twentieth century.

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