write any four characteristic features of the two lower layer of atmosphere of the earth
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The troposphere layer is the first layer of the atmospheric envelope . The troposphere layermeans the disturbed layer , Because all the weather changes take place in it .
The troposphere layer extends for 13 km above the sea level to the tropopause . The thickness of the troposphere layer is 13 km , And it contains 99 % of the atmospheric water vapour which organizes the Earth’s temperature .
The temperature decreases with a rate ( 6.5 degree Celsius ) for each ( 1 km ) height until it reaches the lowest value of about ( – 60 degree Celsius ) at the tropopause .
The atmospheric pressure in the troposphere layer decreases as we go up until it becomes 100 mb at its top , It contains about 75 % of the mass of the atmospheric air . All the atmospheric phenomena such as rains , wind , clouds , ………take place in this layer .
The air movement in this layer is vertical where , the hot air currents move upwards , while the cold air currents move downwards .
The stratosphere layer extends from the tropopause ( at a height of 13 km above the sea level ) to the stratopause ( at a height of 50 km above the sea level ) , The thickness of the stratosphere is 37 kilometers .
The temperature in the stratosphere layerincreases gradually from ( – 60 degree Celsius ) , at the lower part until it reaches ( 0 degree Celsius ) at the top of the layer .
The temperature increases gradually due to the absorption of the ultraviolet rays that emitted from the Sun by the ozone layer which is present at the upper part of the stratosphere layer .
The stratosphere layer contains the most of theozone gas which found in the atmospheric envelope at the height 20 t0 40 km above the sea level . So , The stratosphere layer is called the ozonic atmospheric envelope .
The lower part of the stratosphere layer does not contain clouds or weather disturbances , and the air movement is horizontally . So the pilots prefer to fly their planes in the stratosphere layer .
So , the stratosphere layer is important for man’s life as it contains the ozone layer which absorbs the harmful ultraviolet radiations which emitted from the Sun , and also it is convenient for flying of the planes .
I HOPE THIS WILL HELP YOU
The troposphere layer extends for 13 km above the sea level to the tropopause . The thickness of the troposphere layer is 13 km , And it contains 99 % of the atmospheric water vapour which organizes the Earth’s temperature .
The temperature decreases with a rate ( 6.5 degree Celsius ) for each ( 1 km ) height until it reaches the lowest value of about ( – 60 degree Celsius ) at the tropopause .
The atmospheric pressure in the troposphere layer decreases as we go up until it becomes 100 mb at its top , It contains about 75 % of the mass of the atmospheric air . All the atmospheric phenomena such as rains , wind , clouds , ………take place in this layer .
The air movement in this layer is vertical where , the hot air currents move upwards , while the cold air currents move downwards .
The stratosphere layer extends from the tropopause ( at a height of 13 km above the sea level ) to the stratopause ( at a height of 50 km above the sea level ) , The thickness of the stratosphere is 37 kilometers .
The temperature in the stratosphere layerincreases gradually from ( – 60 degree Celsius ) , at the lower part until it reaches ( 0 degree Celsius ) at the top of the layer .
The temperature increases gradually due to the absorption of the ultraviolet rays that emitted from the Sun by the ozone layer which is present at the upper part of the stratosphere layer .
The stratosphere layer contains the most of theozone gas which found in the atmospheric envelope at the height 20 t0 40 km above the sea level . So , The stratosphere layer is called the ozonic atmospheric envelope .
The lower part of the stratosphere layer does not contain clouds or weather disturbances , and the air movement is horizontally . So the pilots prefer to fly their planes in the stratosphere layer .
So , the stratosphere layer is important for man’s life as it contains the ozone layer which absorbs the harmful ultraviolet radiations which emitted from the Sun , and also it is convenient for flying of the planes .
I HOPE THIS WILL HELP YOU
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