Composition of Atmosphere (Lecture 1)Part-4 (in Hindi)(UPSC /MPPSC SPECIAL)

Lesson 4 of 5 • 27 upvotes • 15:00mins

R K Shukla

Water vapour plays a dominant role in the radiative balance and the hydrological cycle. It is a principal element in the thermodynamics of the atmosphere, it transports latent heat, it contributes to absorption and emission in a n umber of bands and it condenses into clouds that reflect and adsorb solar radiation, thus directly affecting the energy balance. In the lower atmosphere, the water vapour concentrations can vary by orders of magnitude from place to place. This variability creates a fundamental problem in climate modelling due to the very high temporal and spatial resolution needed to resolve all processes creating the sharp gradients which are related to the variability.