Abstract: No abstract available.

Abstract: Examination of radar records shows that snow trails frequently occur around the tops of showers. Evidence has been sought that showers are occasionally initiated by the seeding of supercooled cumulus clouds by snow. Certain ...

Abstract: The distribution in time of individual lightning flashes recorded visually during 20 storms in New Mexico and on 23-cm radar screens during several storms in the south-central United States has been analyzed. The logarithms ...

Abstract: The height and temperature of first radar echoes observed on 49 test cases in a randomized cloud seeding project have been related to seeding treatment and to five cloud parameters, namely, cloud base height, cloud base ...

Abstract: A 3-year randomized crossover seeding experiment has been conducted in South Dakota to test effects of artificial nucleation upon supercooled convective clouds of spring and early summer. The associated rainfall observations ...

Abstract: First radar echoes on a randomized cloud seeding project in North Dakota appeared closer to cloud base and at higher temperatures on seed days than on no-seed days. The average first echo temperature was near ?11°C on ...

Abstract: Ten seasons of commercial cloud seeding in Santa Clara County, California, are evaluated using target and control stations selected in 1955. Comparison of the linear regressions of target rainfall upon control rainfall, ...

Abstract: The number per unit area of radar echoes from isolated showers, as a function of echo radius r, is found by analysis of data from several localities to he proportional to exp (??r), where ? varies with time and place ...

Abstract: Conditions within 16 cumulus congestus clouds were measured on aircraft penetrations near the ?5C level and precipitation developments during the subsequent 45 min were noted. Significant correlations exist between the ...

Abstract: Salt seeding took place below one end of a line of stratocumulus clouds with 350 lb of NaCl released. Cloud base was 9000 ft and cloud tops were at 15 to 18,000 ft above sea level. Cloud top temperature was near ?2C and ...