Troposphere is the lowest portion of Earth’s atmosphere and contains approximately 80% of the atmosphere’s mass and 99% of its water vapour and aerosols. The average depth of the troposphere is approximately 17 km in the middle latitudes.
It thickness of the Troposphere is maximum at equator, deeper in the tropics, up to 20 km, and shallower near the polar regions, at 7 km in summer, and indistinct in winter. In India, it is taken to be around 16 Kilometers. Download Attachment