Climate is the average weather pattern of a certain area experienced over along time. Unlike weather, which is the current atmospheric condition, climate change very little over a long period. So climate is also not static and changes due t natural factors account for very little and slow changes only. Due to unchecked human activities, the climate of the globe is changing much more quickly than it would do naturally. This is climate change, which one of the greatest challenges the world is facing in our times.
The earth gets warm by receiving solar energy. When the temperature increases, heat is reflected back by its surface. Some of the heat is re-reflected back by the atmosphere. As the walls of a greenhouse, the atmosphere thus lets in the solar light and absorbs the outgoing heat and keeps the atmosphere heated. This process is called the greenhouse effect. Due to extra accumulation of the greenhouse gases, mainly carbon dioxide, methane and nitrous oxide, the heating process has been intensified. Polluted air stops heat escaping and extra heat is trapped and makes earth warmer, which is called global warming. With economic development, more factories are established leading to more fossil fuel use, more vehicles are used and more forest areas are cleared. The factories, all kinds of transport, power-stations and burning of coal produce vast amounts of gases. It is estimated that over 7 billion tons of Co2 Is realsed each year through fossil fuel use. Because the trees are getting less, they cannot turn it all back to oxygen, and this is causing global warming.
Effect of climate change are very dire. Global temperatures have risen alarmingly. According to the Intergovernmental panel on climate change (IPCC), 'the world's average temperature could rise as much as 6°C by the end of this century, killing hundreds of millions people and changing all life'. Scientists have warned that if situations don't improve, leaving low-lying areas such as the Maldives at greater of flooding. Pattern of rainfall has changed; some places receiving excessive rain that further triggers landslides floods while others getting drier, unable to sustain settlement and agriculture. Grasslands and rainforests are contracting and deserted are expanding. Worse hurricanes are a commonplace. Overall activities of living brings have been affected and several species are getting extinct.
It is now all clear that human activities are most responsible for the climate change. Industrialized countries which consume more fossil fuels are more responsible but effects are worldwide. Polluted air travels place to place to cause similar harms. Tasks of controlling the climate change cannot also be left to one or two countries. The world community must be committed to reduce the emission of greenhouse gases.alternative energy sources should be used. Forest areas should be expanded. At the same time, areas at immediate risk also need help for mitigating the effects.
The earth gets warm by receiving solar energy. When the temperature increases, heat is reflected back by its surface. Some of the heat is re-reflected back by the atmosphere. As the walls of a greenhouse, the atmosphere thus lets in the solar light and absorbs the outgoing heat and keeps the atmosphere heated. This process is called the greenhouse effect. Due to extra accumulation of the greenhouse gases, mainly carbon dioxide, methane and nitrous oxide, the heating process has been intensified. Polluted air stops heat escaping and extra heat is trapped and makes earth warmer, which is called global warming. With economic development, more factories are established leading to more fossil fuel use, more vehicles are used and more forest areas are cleared. The factories, all kinds of transport, power-stations and burning of coal produce vast amounts of gases. It is estimated that over 7 billion tons of Co2 Is realsed each year through fossil fuel use. Because the trees are getting less, they cannot turn it all back to oxygen, and this is causing global warming.
Effect of climate change are very dire. Global temperatures have risen alarmingly. According to the Intergovernmental panel on climate change (IPCC), 'the world's average temperature could rise as much as 6°C by the end of this century, killing hundreds of millions people and changing all life'. Scientists have warned that if situations don't improve, leaving low-lying areas such as the Maldives at greater of flooding. Pattern of rainfall has changed; some places receiving excessive rain that further triggers landslides floods while others getting drier, unable to sustain settlement and agriculture. Grasslands and rainforests are contracting and deserted are expanding. Worse hurricanes are a commonplace. Overall activities of living brings have been affected and several species are getting extinct.
It is now all clear that human activities are most responsible for the climate change. Industrialized countries which consume more fossil fuels are more responsible but effects are worldwide. Polluted air travels place to place to cause similar harms. Tasks of controlling the climate change cannot also be left to one or two countries. The world community must be committed to reduce the emission of greenhouse gases.alternative energy sources should be used. Forest areas should be expanded. At the same time, areas at immediate risk also need help for mitigating the effects.
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