Artificial rain

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Inoculating clouds with appropriate chemicals can be done from the ground or from the air

Artificial rain is rain that is created by humans by "inoculating" clouds with salts and other chemicals.

Roelof Bruintjes from the National Center for Atmospheric Research (NCAR) and a research team in Coahuila (Mexico) sprayed clouds with a mixture of sodium , magnesium and calcium chloride, thereby creating artificial rain.

The smallest drops of water in the clouds are attached to condensation nuclei formed by salt particles. If sufficiently large water droplets have formed, they fall fast enough to fall down in absolute terms in the thermal updraft surrounding them . The rain generated in this way is stronger than natural rain and extends over a larger area.

Hagel flyer use of silver iodide , which is discharged in the form of very fine smoke particles of a solid fuel body and dispersed by the turbulence behind the surface plane. The silver iodide used falls to the earth together with the rain, albeit in a safe dose for health.

The first attempts to create artificial rain were made in 1950 as part of the Tanganyika Groundnut Scheme .

See also

Individual evidence

  1. ^ Dennis, Arnett S .: Weather Modification by Cloud Seeding. In: International Geophysics. Academic Press, 1980, accessed August 28, 2018 .

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