Cloud liquid water content responses to hygroscopic seeding of warm clouds

The cloud liquid water content (CLWC) data in time and space from a total of 96 pairs of target (T) and control (C) experiments were analysed in this study to compare the responses of CLWC to hygroscopic seeding of warm clouds. Our results of various approaches taken for this analysis have indicated...

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Bibliographic Details
Published in:Current science (Bangalore) 2001-02, Vol.80 (4), p.555-560
Main Authors: Manohar, G. K., Kandalgaonkar, S. S., Tinmaker, M. I. R.
Format: Article
Language:English
Subjects:
Altitude
Cloud seeding
Clouds
Cumulus clouds
Liquids
Moisture content
Precipitation
Rain
RESEARCH COMMUNICATIONS
Weather
Weather modification
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Summary:The cloud liquid water content (CLWC) data in time and space from a total of 96 pairs of target (T) and control (C) experiments were analysed in this study to compare the responses of CLWC to hygroscopic seeding of warm clouds. Our results of various approaches taken for this analysis have indicated significant modifications in the CLWC for the T clouds as against C clouds. Analysis of changes in CLWC in the T clouds after and before seeding has pointed out their increasing trend of values with increment in the number of seeded traverses in most cases. These results have shown that CLWC in the T clouds increases following the seeding treatment in the range 9-26%. Similar comparisons in the C clouds have indicated obvious diminution in CLWC that lies in the range 5-11%. These results clearly indicate the influence on microphysical growth and decay of such clouds that arises from hygroscopic seeding and not seeding of warm clouds. Analysis of spatial responses of CLWC to seeding has shown that the optimum effect of seeding may be achieved for a suitable cloud in the altitude range 5750–6250 ft (asl) in the Pune area. It is believed that this study has provided adequate support in favour of the hypothesis of hygroscopic seeding of warm clouds.
ISSN:0011-3891