Abstract: Two groups of days, one with ?heavy rain? and one with ?light rain,? have been studied. Radar observations, cloud photographs and visual counts of cloud-to-ground lightning were examined. It is concluded that, at least in ...

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Abstract: A technique is discussed for measuring the wobbling or tumbling characteristics of simulated oblate hailstones. It involves the use of a suitable radar for tracking ice or Stycast, oblate spheroids dropped from an airplane ...

Abstract: Observations were made of a thunderstorm which formed over a vertically-pointing X-band pulsed-doppler radar set. They show details of the vertical velocity field in the storm and yield information about the growth of the ...

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Abstract: On the basis of a review of abstracts of articles published mostly since 1969, a summary has been prepared of Soviet research in weather modification. A wide spectrum of problems is being studied. Hail suppression and ...

Abstract: The altitudes of the average initial precipitation echoes in convective clouds in Arizona for particular days have been compared with the altitudes of the calculated cloud base. They are found to be positively correlated. ...

Abstract: Summer convective clouds over a fairly isolated mountain range over southeastern Arizona were seeded by means of airborne silver-iodide generators. The selection of days to be seeded was made according to a randomization ...

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Abstract: Calculations have been made of the radar reflectivity and attenuation produced by exponential distributions of dry and wet ice spheres. Appropriate data are presented in the form of tables and graphs. It is shown that ...