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Karnataka approves cloud seeding programme

Date: 29 May 2019 Tags: Miscellaneous

Karnataka Cabinet has approved cloud-seeding programme amidst reports that State will face deficit rain this year. The project was approved for proposal for Rs 93. crore and will begin in June 2019. Under it, operations, state government is hoping to influence upcoming monsoon and capture as much water as possible from rain clouds to overcome existing drought situation. It will be replication state government’s Varshadhare project launched in 2017 for cloud seeding.

Cloud seeding

  • It also known as weather modification technique. It is artificial way to induce moisture in rain bearing clouds so as to cause rainfall.
  • It uses aeroplanes to spray chemicals over clouds to condense smaller particles into larger rain droplets.
  • The chemicals used in this process are sodium chloride, silver iodide, potassium iodide or dry ice (solid carbon dioxide).
  • These chemical particles act as base (hygroscopic nuclei) for water vapours to settle and condense into larger rain droplets.

Varshadhare project

  • It was cloud seeding project launched by Karnataka Government in 2017 to enhance amount of precipitation from clouds to generate more rain.
  • Special aircraft for period of 37 days (286 hours) was used to disperse chemicals to trigger and enhance precipitation.
  • State Government claims that it had resulted estimated rainfall enhancement of 27.9% apart from extra inflow of 2.5 tmc into Linganamakki reservoir.
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