WMOD00395

• Title: Weather Modification Reporting Program - 1973-1978
• Date: 6/1/1979
• Weather Modification - Doc Type: Report

Table 5.--Weather Modification apparatus, seeding
agents and activities

CY 1976 CY 1977 CY 1978
Apparatus and Agent activities activities activities
Only ground-based AgI
generators (burners) 24 23 17
Ground-based AgI generators
and aircraft AgI pyrotechnics 7 10 11
Ground-based AgI flares 1 4 1
Ground-based propane dispensers 2 4 2
AgI burners and pyrotechnics
on aircraft 9 9 9
Aircraft with AgI burners ,9 14 11
AgI pyrotechnics only on aircraft 12 30 20
Aircraft with CO2 dispensers 9 16 9
Aircraft with polyelectrolyte 2 1 0
Aircraft dispensed charged water 2 0 0

Aircraft were fitted with dispensers 0;17 augers and doors or chutes to
disperse pellets of dry ice into fog or clouds. Aircraft were also used
to eject charged water droplets or polyelectrolyte material having posi-
tive ions into fog. In many activities, aircraft were fitted with 1iquid-
fueled AgI generators or burners and with pyrotechnics that could be
ejected into clouds or could be burned in place on the trailing edge of
the wing. Another aircraft method used in CY 1978 featured the use of
both dry ice and pyrotechnics for precipitation enhancement. In sunnnary,
the most prevalent types of apparatus used in the reporting period were
consistent with those of prior years: liquid-fueled AgI generators,
ground-based arc-type AgI generators, AgI pyrotechnics, and crushed dry
ice dispensers.

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