Divergence of water vapours one of the reasons for 2014 Drought- Scientist

TNPSC Current Affairs - October 2017 by TNPSC Guru

Scientist form the Department of Meteorology and Oceanography at Andhra University has found that Divergence of Water vapours was one of the reasons for 2014 Drought.

Earlier in 2014 India faced 12% rain deficit in June which caused drought.

About Convergence and Divergence of Air:

• When the Air gets hot, the air molecules present in the air get scatter and makes air lighter to rise and when the air is cold, the air molecules will get closer and makes air heavier which cause to sinks.
• If the air molecules are scatter, there will be low pressure and the air molecules are close, there will be high pressure.
• Wind in a high pressure system  flows in clockwise direction which is out of the centre while in low pressure system wind flows in anti-clockwise direction towards the center.
• Inward moving of air in low pressure system lead air to converge and they are not able to move downward due to land , which makes air force to move upward leads to condensation and precipitation  .
• In High pressure system, air is moving away from the center which is called diverging, leads to clear sky. This is one of the reasons India faced drought in 2014.