Open Access Digital Repository of Ministry of Earth Sciences, Government of India

Artificial rainmaking by laser system

Chopkar, SK and Chakrabarty, DK and Sonbawne, SM and Bakal, RL and Chopkar, P and Hariom, P and Pimpalkhute, JS (2010) Artificial rainmaking by laser system. International Journal of Meteorology, 35 (355). pp. 363-370.

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It is shown in this paper how a pulse laser system could create artificial rain. When a pulse is sent up in the atmosphere, depending on its energy, it will break the bonds (dissociate) of major species N2 and O 2 and form excited N and O. These excited atoms are very unstable and immediately react to form NO and O3. These reactions are endothermic and absorb a large amount of heat from the surrounding. As a result, cooling will be produced which will form tiny drops of water. These tiny drops of water will grow bigger and create rain. Simultaneously N2 and O2 will be ionized to form N2*. O2* and O 2 (electrons will get attached to O2). These precursor ions will undergo several reactions and become big clustered ions. These big ions will act as seed which will lead to precipitation and rain. Low temperature created by dissociation will further help grow bigger ions fast and produce rain. Experimental work is necessary to determine the characteristics of laser systems that could be utilized.

Item Type: Article
Additional Information: Copyright of this article belongs to International Journal of Meteorology
Uncontrolled Keywords: chemical reaction; cloud condensation nucleus; droplet; experimental study; ionization; laser method; low temperature; nitrous oxide; oxygen; rainfall
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 28 May 2015 11:09
Last Modified: 28 May 2015 11:09

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