Tropic of cancer is the most important latitude of India i.e. 23.30 ′N. As it divides the Earth into 2 equal parts. The second important latitude is the standard meridian of India i.e. 82 30′E passing through Mirzapur. As it covers the difference of 2 hours and gives India a standard time. As increase in elevation, there is less air above you thus the pressure decreases. As the pressure decreases, air molecules spread out further and the temperature decreases. If the humidity is at 100 percent the temperature decreases more slowly with height. The temperature of the thermosphere gradually increases with height. Unlike the stratosphere beneath it, wherein a temperature inversion is due to the absorption of radiation by ozone, the inversion in the thermosphere occurs due to the extremely low density of its molecules. As the density of the gases in this layer decrease with height, the air becomes thinner. Therefore, the temperature in the troposphere also decreases with height in response. As one climbs higher, the temperature drops from an average around 62°F (17°C) to -60°F (-51°C) at the tropopause.

Temperature increases as you gain altitude in the stratosphere and the thermosphere. Temperature decreases as you gain altitude in the troposphere and mesosphere. Temperature in the stratosphere rises with increasing altitude, because the ozone layer absorbs the greater part of the solar ultraviolet radiation. The ozone layer is an absorbing agent that protects life on Earth. The Tropic Of Cancer (23.5 degree North) is the most important latitude in India because it divides our country in almost two equal parts. It also affects the climate of our country. The most important longitude of our country India is 82 ½ degreebecause it is the Indian Standard Meridian which passes through Prayagraj and Chennai. It is very important because the time in India is determined only by this particular meridian. Therefore, four of the most significant imaginary lines running across the surface of Earth are the equator, the Tropic of Cancer, the Tropic of Capricorn, and the prime meridian. The seven important lines of latitude are the equator at 0 degrees, Tropic of Capricorn at 23.5 degrees south, Tropic of Cancer at 23.5 degrees north, Antarctic Circle at 66.5 degrees south, Arctic Circle at 66.5 degrees north, the South Pole at 90 degrees south and the North Pole at 90 degrees north. In summer, the altitude influences the temperature variations more significantly with a July lapse rate of -4.3°C /km and the effect of latitude is only −0.28°C /olatitude. In winter, the reverse happens. The temperature decrease is mainly due to the increase in latitude.