WMOD00424

• Project Name: 1978 Delaware Rain Augmentation Project
• Title: 1978 Delaware Rain Augmentation Project - Condensed Report
• Prepared For: Secretary of Agriculture, State of Delaware
• Prepared By: Dr. Larry G. Davis, Lawrence B. Youngren
• Date: 12/1/1978
• State: DE
• Country: United States
• Weather Modification - Doc Type: Report

II
II
II
II
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I

3.0 SUMMARY OF SEEDING MISSIONS

3.1 Project Design
The 1978 project was designed to provide operational
seeding and at the same time allocate a portion of the seeding effort
for experimentation. All parties concerned agreed that steps should
be taken to collect data that would enhance the evaluation process.
Thus aircraft data and radar measurements were employed a.s well
as a network of rain gauges. The University of Delaware was
assigned the responsibilities to collect and analyze the raingage
network data. CIC collected and analyzed the radar /aircraft data.
To further facilitate the evaluation process an experi-
mental period was defined in which part of the potentially seedable
days would not be seeded and used as controls. These control days
were selected from a random distribution generated to give a split
of one-third no-seed/two-thirds seed. The University of Delaware
directed the randomization procedures and provided personnel at the
operations site to control the loading of the pyroteclmic devices. On
the no-seed days, placebo flares were loaded by the University per-
sonnel. The CIC personnel had no knowledge of which days were
selected for control. Thus the CIC operating procedures were" iden-
tical for all operating days. In fact this information was withheld
from CIC until the analyses were completed, thus preventing bias in
the operations and analysis procedures.
Due to the desire to obtain as much operational cover-
age as possible, the hours outside the Experimental Period were
declared operational (with a few exceptions).

23

'.