WMOD00415

• Title: Winter Cloud Seeding Potential on the Mogollon Rim - Final Report
• Date: 1/1/1989
• Weather Modification - Doc Type: Report

CONTENTS

Page

Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. xvii

1. Introduction....................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1 General.................................................................. 1

1.2 Background............................................................... 1

1.3 Program objectives .......................................................... 2

1.4 Report contents ............................................................ 2

2. Field programs: site selection, scheduling, and general weather ............................ 5

2.1 Research areas and site selection . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . 5
2.1.1 The early 1987 field program ............................................... 5
2.1.2 The early 1988 field program .............................................. 10

2.2 Field scheduling and organization
2.2.1 The early 1987 field program
2.2.2 The early 1988 field program

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11

11
12

2.3 Observed weather in relation to historical normals .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 13
2.3.1 The early 1987 field season ............................................... 13
2.3.2 The early 1988 field season ............................................... 13

3. Field instrumentation and utilization ............................................... 15

3.1 Early 1987 field instrumentation ............................................... 15

3.1.1 Happy Jack Site. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.1.2 Camp Verde Site. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 19

3.1.3 Payson site ........................................................... 20

3.1.4 Precipitation gauge network ............................................... 20
3.1.5 Prescott airport site ..................................................... 21

3.2 Early 1988 field instrumentation ............................................... 24

4. Arizona storm classification ...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

4.1 Introduction.............................................................. 27

4.2 Synoptic classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

4.3 Synoptic and doud classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

ix