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<br />I <br /> <br />I <br /> <br />matter of fact, that is a chronic drought area--the Walsenburg-Trinidad <br />area. We don't want: to leave any stone unturned to try to produce <br />additional precipitation in that area, but we do have the area covered. <br />as nearly as we think it can be covered. <br /> <br />The bunching up of generators. and putting more in a particular area <br />doesn't necessarily do any good. The output of the. silver iodide has <br />to be controlled. If we overseed, it becomes nonproductive or if we <br />underseed, it's nonproductive. Each generator has a control device by <br />which we can control the output. Then we monitor the.output by air- <br />craft to determine whether we should increase it or decrease it and <br />also to monitor what's coming from Utah. That state is also engaged in <br />weather modification activity. <br /> <br />We can't criticize them for wanting generators in the lower Arkansas <br />or wherever. There are only certain. limited conditions under which <br />cloudseeding.can be successful: that is on the winter type clouds. <br />The only time that we can successfully seed is under upslope wind <br />conditions. The prevailing winds are almost always from the West. <br />These winds move upslope as they hit the Continental Divide,being <br />deflected by the mountain ranges. This is what is called an upslope <br />condition. <br /> <br />The seeding must take place as this air mass comes across--the air <br />mass and the clouds. We don't see the air mass under the clouds. It <br />is invisible to us, but it's there. We can see the effects of it and <br />feel it, but we can't see it. Riding in part of that air mass are the <br />clouds which we can see because of the concentration of moisture. ; As <br />that air mass comes in from the Pacific Ocean and starts to hit these <br />mountain masses, the mountain masses make it rise upward. As that air <br />is deflected up, it then hits and becomes intermingled and creates a <br />turbulence in the cloud mass which is in that air mass. So the <br />critical time that we must seed is at the time that the uplift occurs. <br />We plan our generators at locations short of these mountain ranges. <br />As the air is deflected up, it picks up our silver iodide that is being <br />put out by the generators and carries.that silver. iodide into the <br />cloud masses. It mixes because of the air turbulence being forced up- <br />ward by these mountain masses.. If we seed downs lope ,. it is s imply a <br />a waste of time. If we put out the silver iodide in the plains, it <br />just floats right along the ground with the air. There's nothing to <br />make it go up. This is what people don't understand. They don't <br />understand that. only in certain places can we inject the silver iodide. <br /> <br />As the cloud masses start upward, they reach new elevations at which <br />the air becomes super-cooled. At that point, snow crystals are formed, <br />and that's when..the silver iodide has to be there. TJ:.te silver iodide <br />acts as a nucleus for the formation of water droplets which then <br /> <br />-57- <br />