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Related Experiment Videos

Artificial cloud formation in the atmosphere.

K O Jayaweera, T Ohtake

    Science (New York, N.Y.)
    |November 3, 1972
    PubMed
    Summary
    This summary is machine-generated.

    Artificial clouds were created using dry ice in supersaturated air below freezing. These clouds could help regulate arctic temperatures by establishing radiative equilibrium.

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    Area of Science:

    • Atmospheric science
    • Cloud physics
    • Climate engineering

    Background:

    • Arctic regions experience significant cooling under clear skies.
    • Radiative equilibrium is crucial for maintaining stable surface temperatures.
    • Artificial cloud formation offers potential for localized climate modification.

    Purpose of the Study:

    • To investigate the feasibility of creating artificial clouds below 0°C.
    • To explore the application of these clouds in regulating arctic surface temperatures.
    • To assess the potential for establishing radiative equilibrium using artificial clouds.

    Main Methods:

    • Introducing dry ice pellets into cloudless, supersaturated air below 0°C.
    • Observing cloud formation under controlled atmospheric conditions.

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  • Analyzing the radiative properties of the artificial clouds.

    • Main Results:

    • Successfully formed artificial clouds in a cloudless atmosphere at sub-zero temperatures.
    • Demonstrated that dry ice can induce condensation in supersaturated air.
    • Indicated potential for radiative equilibrium establishment.

    Conclusions:

    • Artificial cloud formation using dry ice is achievable.
    • These clouds show promise for inhibiting cooling in arctic surface regions.
    • Further research is warranted to explore climate engineering applications.