Global warming.....here i am going to write some thing about Global warming
During the past 4.6 billion years, the Earth has gone through climate changes over and over.The Earth,a magma ocean at the beginning of its history, has alternately experienced ice ages and warm periods.Its currently in the slow paced warming period that started 20,000 years ago.In a simulation result it has been shown that global temperature will change from 1-5 o'C over the next century.we the human can adjust with this temperature but the immovable plants will suffer a lot. They are sensitive to temperature change and first of all Global warming will have a great impact on plants.This will affects the food chain and changes the Eco system.
The temperature rise causes melting of ice caps at top mountains and glaciers in the north and south polar regions.Thus the sea level rises and if the sea level rises means low lying coastal areas and small islands will be submerged.That would severely affect people living there.It is predicted that a 5 0'C increase in temperature would melt the Greenland ice sheet, resulting in 3-meter sea level rise over the next millennium.
Not only that, ti would raise sea level by about 7 meters if it melted completely.then people will start fighting over scarce foods and lands.
HOW THE EARTH GET HEATED?
The sunlight heats up ground called solar radiation and the heated ground emits infrared radiations.The ozone layer absorbs the ultra violet radiation from the sun and warms the atmosphere.Meanwhile, the air absorbs infrared radiation, warming up the atmosphere.
CO2,water vapor, methane, N2O,and CFC exists in the air.These molecules effectively absorb infrared heat radiation and are called Green House Gases.
HOW TO REDUCE IT?
By reducing the emissions of these gases, Global warming can be prevented.
During the past 4.6 billion years, the Earth has gone through climate changes over and over.The Earth,a magma ocean at the beginning of its history, has alternately experienced ice ages and warm periods.Its currently in the slow paced warming period that started 20,000 years ago.In a simulation result it has been shown that global temperature will change from 1-5 o'C over the next century.we the human can adjust with this temperature but the immovable plants will suffer a lot. They are sensitive to temperature change and first of all Global warming will have a great impact on plants.This will affects the food chain and changes the Eco system.
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| EARTH'S ENERGY BUDGET |
The temperature rise causes melting of ice caps at top mountains and glaciers in the north and south polar regions.Thus the sea level rises and if the sea level rises means low lying coastal areas and small islands will be submerged.That would severely affect people living there.It is predicted that a 5 0'C increase in temperature would melt the Greenland ice sheet, resulting in 3-meter sea level rise over the next millennium.
Not only that, ti would raise sea level by about 7 meters if it melted completely.then people will start fighting over scarce foods and lands.
HOW THE EARTH GET HEATED?
The sunlight heats up ground called solar radiation and the heated ground emits infrared radiations.The ozone layer absorbs the ultra violet radiation from the sun and warms the atmosphere.Meanwhile, the air absorbs infrared radiation, warming up the atmosphere.
CO2,water vapor, methane, N2O,and CFC exists in the air.These molecules effectively absorb infrared heat radiation and are called Green House Gases.
HOW TO REDUCE IT?
By reducing the emissions of these gases, Global warming can be prevented.
