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V SEVERE STORMS 



1. Hurricanes 123 



The Origin of Atlantic Hurricanes . . . 123 



A report on Project STORMFURY: 

 Problems in the Modification of 

 Hurricanes 127 



The Scientific Basis of Project 



STORMFURY 130 



A Note on the Importance of 



Hurricanes 132 



Geomorphological Effects of 



Hurricanes 133 



2. Tornadoes 137 



Status of Tornado Research 137 



Tornadoes — Their Forecasting 



and Potential Modification 144 



Tornado Forecasting and Warning . . 146 



3. Hail 149 



Hailstorm Research and Hail 



Suppression 149 



Current Status of Hail Prevention . . . 154 



4. Lightning 157 



Basic Processes of Lightning 157 



Reduction of Lightning Damage 



by Cloud Seeding 160 



VI PRECIPITATION AND REGIONAL 

 WEATHER PHENOMENA 



1. Drought 165 



The Causes and Nature of Drought 



and its Prediction 165 



2. Precipitation Modification 169 



Artificial Alteration of Natural 



Precipitation 169 



The Status of Precipitation 



Management 172 



3. Fog 180 



Modification of Warm and Cold Fog . 180 

 Fog Dispersal Techniques 182 



4. Tropical Weather 184 



Monsoon Variations and Climate 



and Weather Forecasting 184 



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Tropical Meteorology, with Special 



Reference to Equatorial Dry Zones. 187 



5. Dust 191 



African Dust and its Transport into 



the Western Hemisphere 191 



VII WATER RESOURCES, FORESTRY, 

 AND AGRICULTURE 



1. Water Resources 197 



Estimating Future Water Supply 



and Usage 197 



Water Movement and Storage in 



Plants and Soils 200 



A Note on Subsidence and the 

 Exhaustion of Water-Bearing and 

 Oil-Bearing Formations 203 



2. Forestry 205 



Water Quality in Forests 205 



Factors Relating Forest Management 



to Water Quality 212 



3. Agriculture 215 



Global Food Production Potentials . . . 215 

 The Hazard of Drought 218 



VIII AQUATIC ECOSYSTEMS 



1. Component Relationships 225 



Trophic Dynamics, with Special 



Reference to the Great Lakes 225 



Effects of Artificial Disturbances on 



the Marine Environment 230 



Marine Flora and Fauna in the 



Antarctic 231 



Systems Approaches to Understanding 

 the Oceans and Marine Productivity 233 



2. Oceanic Production 236 



Primary Plant and Animal Life in the 



World Ocean 236 



The Southern Oceans in the 



Production of Protein 240 



Scientific Aspects of North Pacific 



Fisheries 242 



Some Scientific Problems Associated 



with Aquatic Mammals 245 



3. Estuaries and Coastal Zones 248 



