The work reported here comes from the combined efforts of the personnel of the National Precipitation Research Program (NPRP), which is an amalgamation of the Weather Bureau team at Bethlehem, the staff of CloudQuest at Nelspruit, and the statistical team at Unisa.
Central to the success of this research has been the continuity in the research funding provided by the Weather Bureau and the WRC, the inspiration supplied by two chief directors of the Weather Bureau, Piet du Toit and Gert Schulze, and the unflagging support of Dr. George Green, the NPRP’s project coordinator.
Biswas, K. R., and A. S. Dennis, 1971: Formation of a rain shower by salt seeding. J. Appl. Meteor.,10, 780–784.
Braham, R. R., Jr., 1964: What is the role of ice in summer rain showers? J. Atmos. Sci.,21, 640–645.
Cooper, W. A., R. T. Bruintjes, and G. K. Mather, 1997: Somecalculations pertaining to hygroscopic seeding with flares. J. Appl. Meteor.,36, 1449–1469.
Cunning, J. B., Jr., 1976: Comparison of the Z–R relationship for seeded and nonseeded Florida cumuli. J. Appl. Meteor.,15, 1121–1125.
Dennis, A. S., E. W. Holroyd III, W. E. Howell, D. A. Matthews, B. A. Silverman, and A. B. Super, 1984: HIPLEX: A co-operative program on rain augmentation in the High Plains. Bureau of Reclamation, Denver, CO, 55 pp. [Available from Water Research Commission, P.O. Box 824, Pretoria 001, South Africa.].
Dixon, M. J., and G. K. Mather, 1986: Program for atmospheric water supply—Phase I, 1983–86, Vol. III. WRC Rep. 133/3/88, Pretoria, South Africa, 55 pp. [Available from Water Research Commission, P. O. Box 824, Pretoria 001, South Africa.].
——, and G. Wiener, 1993: TITAN: Thunderstorm identification, tracking, analysis and nowcasting—A radar-based methodology. J. Atmos. Oceanic Technol.,10, 785–797.
Eagan, R. C., P. V. Hobbs, and L. F. Radke, 1974: Particle emissions for a large Kraft paper mill and their effects on the microstructure of warm clouds. J. Appl. Meteor.,13, 535–552.
Garstang, M., G. D. Emmitt, and B. Kelbe, 1981: Rain augmentation in Nelspruit (RAIN). Report to the WRC, Pretoria, South Africa, 266 pp. [Available from Water Research Commission, P.O. Box 824, Pretoria 001, South Africa.].
Hindman, E. E., 1978: Water droplet fogs formed from pyrotechnically generated condensation nuclei. J. Wea. Modif.,10, 77–96.
Johnson, D. B., 1987: On the relative efficiency of coalescence and riming. J. Atmos. Sci.,44, 1671–1680.
Klazura, G. E., and C. J. Todd, 1978: A model of hygroscopic seeding in cumulus clouds. J Appl. Meteor.,17, 1758–1768.
Marshall, J. S., and W. M. K. Palmer, 1948: The distribution of rain drops with size. J. Meteor.,5, 165–166.
Mather, G. K., 1991: Coalescence enhancement in large multicell storms caused by the emissions from a Kraft paper mill. J. Appl. Meteor.,30, 1134–1146.
——, M. J. Dixon, and J. M. de Jager, 1996: Assessing the potential for rain augmentation—The Nelspruit randomised convective cloud seeding experiment. J. Appl. Meteor.,35, 1465–1482.
Morgan, G., B. J. Morrison, and G. K. Mather, 1989: Measurement of total and condensed water mixing ratios in warm based cumulus clouds by a jet engine evaporation technique. Theor. Appl. Climatol.,40, 187–199.
Reisin, T., S. Tzivion, and Z. Levin, 1996: Seeding convective clouds with ice nuclei or hygroscopic particles: A numerical study using a model with detailed microphysics. J. Appl. Meteor.,35, 1416–1434.
Srivastava, R. C., 1967: On the role of coalescence between rain drops in shaping their size distributions. J. Atmos. Sci.,24, 287–292.