Question

difference between troposphere and meshosphere​

Answer 1

Answer:

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Explanation:

1. Troposphere

It is the lowermost layer of atmosphere adjacent to the earth's surface. Greek word 'tropos' means 'mixing'. Characteristics of this layer are as follows:

• Troposphere extends almost upto 10-11 km. from earth surface.

• Here mixing of almost all gaseous elements, dust particles, water vapour, etc. is observed.

• In troposphere, as the altitude increases, temperature decreases alongside. The normal lapse rate is 6.4°C/1 km. For which, at the extreme portion of troposphere, atmospheric temperature drops at about –70°C.

• Inversion of temperature is also observed in this region of atmosphere.

• All types of meteorological disturbances (e.g., cyclones, low-pressure areas, depression, etc.) are also observed.

• The extreme portion of troposphere is called 'Tropopause' where the stability of temperature prevails.

2. Mesosphere

Mesosphere is the third atmospheric layer of earth. Greek word 'meso' means 'middle'. This layer extends approximately middle portion to the total extent of atmosphere. Characteristics of this layer are as follows:

• Mesosphere extends almost upto 80 km. from earth surface.

• In mesosphere, as the altitude increases, temperature decreases alongside. At the extreme portion of mesosphere, atmospheric temperature becomes about –90°C. Even temperature of –110°C have been reported.

• Mesosphere is the coldest layer among other atmospheric layers.

• Here the air pressure remains very low (almost 0.01 milibar).

• Turbulences and atmospheric waves develop in the mesosphere.

• Mesosphere is one of the most important layer of earth's atmosphere as the meteorites disintegrate before clashing with earth surface.

• The upper limit of mesosphere is called 'Mesopause'. It is an isothermal region, where the temperature does not increase or even decrease.

Answer 2

Answer:

• Temperature decreases with altitude in two of Earth's atmospheric regions: the troposphere and the mesosphere. The troposphere is the region closest to the ground, and the mesosphere is just above the ozone layer.
• The boundary between the stratosphere and the troposphere is called the tropopause. The jet stream sits at this level and it marks the highest point that weather can occur. ... The mesosphere is the layer above the stratosphere. The temperature decreases with height here just like it does in the troposphere.