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

I
I
I
I
I
I
I
I
I
,I
I
I
I
I
I
I
I
I
I

6.0 DISCUSSION OF RESULTS

The purpose of the analyses conducted by CIC has been to
describe and identify the meteorological and physical processes
active during the individual seeding events. The data reduction
was accomplished without knowledge of seed versus control Ie vents
and the interpretation has been accomplished without knowledge of
the rainfall patterns. The University of Delaware, under a
separate report, will provide the analysis of the rainfall patterns.

6.1 Operational Period Results
In this report we have made only a cursory rE!view
of the 16 Operational Missions. Thus the discussions are only
meant to be subjective and give a general impression of results.
The execution of the seeding missions went well. There were a
few times where ATC problems created delays in the seeding but
overall coverage and deli very was good.
Echo time histories for the operational missions
show similar response sequences as those described in more
detail in Section 5. It is clear that some seeding opportunities
exist outside the Experimental Period and, when rainfall is needed,
these opportunities should be exploited.

6.2 Experimental Period Results
Ten case studies have been used to determine the
cloud processes typically occurring during those days declared
suitable for dynamic seeding. Four of these cases were in fact
seeded with placebos (sand nares) and serve as examples of
natural cloud conditions
Two of the control cases were very similar (Cases
IT and IV). They occurred with unstable air following the passage

115