Laserfiche WebLink
<br />-17- <br /> <br />.. <br /> <br />The following material liTaS taken from a paper by Gary Achtemeier <br /> <br /> <br />which was published in JAM, Harch 1979. The title is "Planned Weather <br /> <br /> <br />Modification and the Severe ~1eather Threat in the Central High Plains". <br /> <br />It is his opinion that severe weather should curtail weather modifica- <br /> <br />tion activities. Others feel that we ought to consider attempting to <br /> <br />mitigate such severe weather through cloud seeding. His point of view <br /> <br /> <br />should certainly be heard; S(l we present the Abstract of his paper and <br /> <br />some excerpts for considerati.on here. Since this is part of a formal <br /> <br /> <br />publication, the figure and table numbers are left intact, and the <br /> <br />references are included. <br /> <br />ABSTRACT <br /> <br />Operational. and expe.rimental convective cloud-seeding <br />projects are often planned without regard to the number of <br />seeding-opportunity days that can be lost because of the need <br />to suspend operations during the threat of severe weather. <br />June daily rainfall, severe storm and tornado watches, and <br />observed tornadoes within a hypothetical (proposed) opera~.. <br />tional area over southwest Kansas were compared within the <br />context of five procedures for severe weather related opera- <br />tions suspensions. These procedures varied in the restric- <br />tions placed on operations. The results show that anywhere <br />from 45-87% of the June rain can fall when operations have <br />been suspended. The length of a scientific seeding experi- <br />ment could be increased anywhere from 45-426%. Finally, 46% <br />of the tornadoes occurred when there were no concurrent tor- <br />nado watches. This failure rate is so large that severe wea- <br />ther watches may not be useful for operations suspension pro- <br />cedures. <br />