WMOD00431

• Title: Ecological Effects of Weather Modification: A Problem Analysis
• Date: 5/1/1969
• Weather Modification - Doc Type: Report

III.

VII.

VIII.

.

TAliLE OF CONTENTS

1. SUMMARY AND RECOMMENDATIONS . . .

. . 1

II. THE SCOPE OF WEATHER MODIFICATION.
Weather Modification between Now and 1980.
Deliberate and Inadvertant Climatic Change
Weather Modification and Ecosystems. . .
Organization of Study. . . . . . . . .
List of Consultants and Project Staff. .

.12
.14
.17
. . .18
.18
. .20

PRECIPITATION MODIFICATION IN SEMIARID AND ARID REGIONS .
Grasslands of Central North America.
Vegetation of Arid Zones . . . . . .
Snow Modification at High Elevations .

. .22
. .22
.32
.33

IV.

PRECIPITATION MODIFICATION IN HUMID CLIMATES. .
The Connecticut River Basin as Example . .
Other Humid Temperate Regions. . . . .

. .'

oi .

.40
.41
.45

V.

. . .48
. .48

. . . . . .53
.61

. . .'. . . . . 62

PESTS AND DISEASES. . 0.' o. .
Insect Populations .
Plant Diseases
Human Diseases
Weeds. . . . . .

. .'.. .

VI.

.64
.64
. .64
. .65
.66
.69
. .69
. .71
.72

DIRECT EFFECTS OF SEEDING AGENTS. .

Iodine . . . .. .. . . 0

Silver . . . . 0 . 0 0 0 . . . .

Chemical Activity of Silver. .
Lethality of Silver Compounds.
Sublethal Inhibition of Silver
Environmental Concentration Processes. .
Biological Effects on Ecosystems ... .
Organic Seeding Agents 0 . . .

BIOLOGY OF STREAMS AND LAKES. .
Streams. . 0 . .

.74
. .74

. . . 0 .81

Lak.es . . 0 . . . D .

FOG, HAIL, LIGHTNING, AND HURRICANES..

Fog. . 0 .
Hail 0 . .

Lightning. .

Hurricanes . . . . . . . .

. .83
. .83
. .84
. .84
.85

IX. MONITORING THE EFFECTS OF WEATHER MODIFICATION. . . . .
Proposals for Ecological Survey and Monitoring
Methods for Evaluating Field Response. . . . . . . .
Statistical Analysis and Experimental Design . .
Environmental Baseline Studies . . . . . . . .

.89
.89
n .93
n 101
103