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<br />o Airborne calibration of dry ice seeding in winter clouds. <br /> <br />2. NCAR Convective Storms Division (CSD) (FY 1980--$1.7 Million) <br /> <br />This group is an outgro~h of the National Rail Research Experiment <br />(NHRE), which was focused on hail suppression. CSD plans to continue an <br />integrated approach to more general studies of convective storms and <br />precipitation, employing intensive surface measurement networks in concert <br />with research aircraft and multiple Doppler radars. Such studies may be <br />expected to contribute to our ability to: (a) predict the nature and amount <br />of precipitation from convective clouds, (b) evaluate the possibilities of <br />intentional modification, and (c) estimate the magnitude of man's impact on <br />weather and climate through inadvertent modification of convective clouds. <br /> <br />The CSD program includes large-scale field programs to gather <br />comprehensive and coordinated data sets, together with three-dimensional <br />numerical modeling of their dynamical and microphysical aspects, aiming <br />towards the objective of comparing model outputs with the behavior of storms <br />on which adequate and reliable measurement have been made. eSD has <br />essentially completed its analysis of NHRE data and is emphasizing <br />participation in eCOPE. <br /> <br />3. NCAR Atmospheric Technology Division (AID)7 <br /> <br />This group provides basic facility development and support to NCAR and <br />university scientists. Of major importance to weather modification is the <br />aircraft, radar, and ground network support to field programs, particularly <br />eCOPE inFY 1981. Computer services are provided for data analysis and <br />modeling studies. Current instrument and facility development includes <br />testing of cloud physics instrumentation and initial development of a new <br />twin-turboprop airplane and data system which will be used primarily for <br />research on cloud and precipitation systems. <br /> <br />D. OTHER FEDERAL AGENCIES <br /> <br />Although the Department of Defense (000) was once an active participant <br />in Federal weather modification programs and still conducts limited weather <br />modification operations to clear fog at military airfields, it has no formal <br />research program in weather modification at this time. All three DaD services <br />have related research in cloud physics, aerosols, and instrumentation whose <br />main thrust is in improving forecast capabili t:'J and in developing electro- <br />optical weapons and countermeasures. These related efforts have only <br />secondary impact on conventional weather modification and should not be <br />considered part of the national plan. Other agencies with interests in <br />weather modification should remain cognizant of related DaD research and <br />development in order to integrate relevant results into conventional weather <br />modification technology development. <br /> <br />7Fy 1980 funding for AID included in eSD total. <br /> <br />- 22 - <br />