Results of precipitation enhancement project by surface-seeding during winter at Delhi
Keywords:Weather Modification Research
AbstractA series of surface-seeding experiments by silver iodide smoke undertaken at Delhi during successive winter seasons since 1968 came to a close in 1975. Randomization in the seeding programme was observed from the third season. Evaluation was done on the basis of 24 hours rainfall data obtained from a close raingauge network within 25 km. It was also done on the basis of observations made with a 3.2 cm weather radar. The result was expressed (i) pair-wise and (ii) season-wise. Pairwise analysis indicated inconclusive result both by raingauge and radar. According to season-wise analysis, result was positive in five out of the seven seasons by raingauge. It was positive in three seasons by radar. The results are not statisticallys ignificant.
Technical Notes and Correspondence
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