WMOD00379

• Title: Potential Opportunities for Precipitation Augmentation in the Eastern Tennessee Valley
• Date: 2/1/1988
• Weather Modification - Doc Type: Report

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1.0

EXECUTIVE SUMMARY

Page

Introduction . . . . . . . ;

. xvi i

2.0 Report Summary and Recommendation. .

.xviii

3.0 Individual Study Results. . . . . . . xix
3.1 Precjpitation Statistics,. . . . . . . . . . .. xix
3.2 Cloud and Precipitation Characteristics. xix
3.3 Radar Echo Characteristics. . . . . . . . xx
3.4 Rawinsonde Studies . . . . . . . . . . . . xx
3.5 Opportunities in Cold Orographic Clouds. . . .. xxi
3.6 Opportunities in Convective Clouds xxii
3.7 Phase II Program. . . . . . . . . . .xxiii
3.8 Summary of Cost Benefits Analysis. ... . . xxiv

CONTENTS

Page

1.0 INTRODUCTION

. 1

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2

3

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1.1 Background ..
1.2 Phase I Approach

2.0 STUDY AREA AND DATA SETS

........

2.1
2.2
2.3
2.4
2.5
2.6
2.7

Study Area ....... .
Precipitation Data . .
Upper Air Observations

Radar . . . . . . . . .

.......

Sate 11 ite Imagery . . .
Mountaintop Observations .... . . . . . . .
Synoptic Charts and Hourly Observations .

3.0 PRECIPITATION STATISTICS. . . . . . . .

4.0 CLOUD AND PRECIPITATION CHARACTERISTICS. 15

4.1
4.2

Introduction ... . . . . . . . .
Satellite Studies. . . . .
4.2.1 Data Available. . . .
4.2.2 Method of Analysis.
4.2.3 Results. . . . . .
4.2.3.1 Overview .. . . . . . . .
4.2.3.2 Annual and monthly cloud
variability. . . .
4.2.4 Summ~y and Conclusions.

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