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Uttarakhand forest fire UPSC NOTE

 Why in News

  • The Supreme Court told the Uttarakhand government that rain gods or cloud-seeding would not douse the forest fires that had claimed five lives in the State

  • SC urged, the Uttarakhand government have to take preventive measures

Cloud Seeding

  • It is the process of artificially generating rain by implanting clouds with particles such as silver iodide crystals.

  • Cloud seeding uses planes to spray clouds with chemicals to condense smaller particles into larger rain droplets.

Cloud Seeding Methods:

  • Static Cloud Seeding:

    • This method involves introducing ice nuclei, such as silver iodide or dry ice, into cold clouds that have supercooled liquid water droplets

    • The ice nuclei can trigger the formation of ice crystals or snowflakes, which can grow at the expense of the liquid droplets and fall as precipitation.

  • Dynamic Cloud Seeding:

    • Dynamic cloud seeding is a method of inducing rain by boosting vertical air currents.

    • The process is considered more complex than static cloud seeding because it depends on a sequence of events working properly.


  • Hygroscopic Cloud Seeding:

    • This method involves spraying fine particles of hygroscopic materials, such as salts through flares or explosives into the base of warm clouds

  • The particles can act as cloud condensation nuclei and increase the number and size of the cloud droplets, which can enhance the reflectivity and stability of the clouds.

Applications:

  • Cloud seeding is done to enhance winter snowfall and increase mountain snowpack, which can supplement the natural water supply for communities in the surrounding area

  • Cloud seeding can also be done to prevent hailstorms, dissipate fog, induce rainfall in drought-prone regions, or reduce air pollution.

Challenges:

  • Cloud seeding requires the presence of moisture-filled clouds, which are not always available or predictable.

  • Cloud seeding does not occur during times when additional precipitation would be problematic, such as times of high flood risk or busy holiday travel periods.

  • Cloud seeding may have negative effects on the environment and health, such as altering the natural water cycle, contaminating the soil and water with chemicals, or affecting the local climate


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Learnerz IAS | Concept oriented UPSC Classes in Malayalam: Uttarakhand forest fire UPSC NOTE
Uttarakhand forest fire UPSC NOTE
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