Laserfiche WebLink
<br />author scienillic knowledge is lacking. <br /> <br />L. <br /> <br />Changnon and Lambright (1990) alluded to some oithe problems and difticulties when <br />conducting weather mocWication experiments. Weather modification is still to a certain <br />extent viewed as a controversial topic. Past field experiments like NHRE (National Hail <br />Research Experiment) and SCPP were sometimes plagued by controversies largely due <br />to the wide spectrum oi processes that were being studied by scientists with different <br />backgrounds. According to Changnon and Lambright the major scientific controversies <br />were a result oi six actors; l)proceeding with an inadequate scientific knowledge base;. 2)a <br />ftawed project-plaDDing process; 3)cllil'ering views between !unding agencies and project <br />scientists; 4)lack oi continuing commitment by the principal agency conducting the <br />experiment; 5) changes in project directorsj and 6) poor performance by project scientists. <br />It is extremely important that each experiment should critically review itseli in terms <br />oi these six actors to be able to learn from mistakes in the past, exploit opportunities, <br />overcome weaknesses and concentrate on strengths rather than trying to cover all aspects <br />oi the problem. <br /> <br />j' <br /> <br />The knowledge oi cloud physics and statistics, and their application to weather <br />modification has increased substantially since the the first cloud was seeded in 1946. The <br />development oi new equipment - such as aircraft platiorms with a variety oi measuring <br />systems, mesoscale and raingauge network stations and remote sensing techniques from <br />both space and the ground - have introduced a new dimension to describe the structure <br />and evolution oi cloud systems. Equally important are the advances in computer systems <br />that are able to handle very large amounts oi data at high speeds making it possible to <br />use increasingly sophisticated and detailed numerical models. In the past, those weather <br />modification experiments incorporating modelling. efforts were primarily dependent on one <br />and two-dimensional models to help in the understanding oi atmospheric processes and <br />to give guidance during field experiments. However, three-di~siODal time dependent <br />models are now used in the analyzes oi data from some projects and there are plans to run <br />these models in the field in an operational mode in the very Dear mture. Together these <br />new systems and insight will allow the development oi models to help in the development <br /> <br />i.. <br /> <br />r-; <br />i- <br />LoI <br /> <br /> <br />3 <br /> <br />.. <br /> <br />. <br /> <br />. <br /> <br />. <br />