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Irrigation linked to reduced rainfall in northern India

Updated : January 13, 2020 07:53 PM IST

Model simulations showed that irrigation lowers the maximum and minimum temperatures over India with heavily irrigated areas such as the Indo-Gangetic Plains seeing a decline of 3 and 4 degrees Celsius respectively.
This temperature drop reduces the temperature and pressure gradient between the warm land surface and cooler oceans, resulting in reduced overall rainfall over India.
Accurate information on the amount and seasonal timing of water used for irrigation are absent. Satellite remote sensing data may prove useful for better estimates on how much water is used for irrigation.
Irrigation linked to reduced rainfall in northern India

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