Laserfiche WebLink
<br />processes of generation, growth, and maintenance of the parent thunderstorm <br />system and the critical factors that determine and lead to the occurrence or <br />specific severe storm phenomena. <br /> <br />Much of the required research is in progress to satisfy agency mission <br />responsibilities or program objectives other than weather modification. <br />Consequently, the plan recommends that randomized seeding experiments directed <br />tOlJard specific severe storm phenomena be deferred and that the Federal severe <br />storm modification research program stress, in order or priority, the <br />following activities: (l) continued lOOni toring of hail seeding <br />experimentation in other countries, (2) investigation of thunderstorms and <br />thunderstorm systems in conjunction with other weather modification field <br />experiments, and (3) periodic review of ongoing research programs on severe <br />storms for scientific findings applicable to weather modification problems. <br /> <br />6. Stratus and Fog Dissipation <br /> <br />Although fog and stratus dissipation 'NaS the object of the first <br />successful, scientifically designed weather modification experiments, little <br />federally sponsored research in fog and stratus modification is being done now <br />in the United States. Of the numerous techniques studied, only ice phase <br />seeding for supercooled fog dispersal and warm fog dissipation by heating have <br />achieved operational success. <br /> <br />Major research thrusts in this program area would be premature, but a <br />feasibility study is proposed for Project Sunshine. This would use existing <br />techniques to dissipate large areas of supercooled stratus, with the goal of <br />increasing sunshine over populated areas in winter to save energy. <br /> <br />7. International P~ojects <br /> <br />This plan recognizes the need to continue or increase the involvement of <br />U.S. scientists in high quality weather modification research efforts in other <br />countries in order to accelerate progress by sharing knowledge, ~~perience, <br />and resources. It calls for expanded u.s. involvement in the World <br />Meteorological Organization (WHO) Precipitation Enhancement Project in Spain, <br />if that project moves into the more costly experimental seeding stage, and <br />continued international participation in the w?RS High Plains Cooperative <br />Program (HIPLEX). The small but significant bilateral collaboration with <br />Canada has contributed substantially to the productivity of HIPLEX with little <br />added, cost. <br /> <br />The plan also suggests that at~ention be given to the possibility of <br />collaborating in cloud measurements and data analysis in Israel to better <br />understand the apparent success or experiments in that country and to learn <br />the ~~tent to which the favorable meteorological conditions may be <br />reproducible in the United States. <br /> <br />ix <br />