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<br />t <br />t <br />t <br />t <br />t <br />t <br />t <br />! <br />t <br />t <br />t <br />t <br />t <br />t <br />t <br />t <br />t <br />t <br />. <br />. <br />t <br />t <br />t <br />t <br />t <br />t <br />t <br />t <br />t <br />t <br />. <br />t <br />. <br />t <br />t <br />t <br />. <br />. <br />. <br />. <br />t <br />. <br />. <br /> <br />..r To <.l''''' .'fI"",.'1;Jl>{ r, tn.J.~ <tP <br />. <br /> <br /> <br />.i: .. <br /> <br />~ ~ <br />,. <br /> <br />'" <br /> <br />. <br /> <br />\ . <br /> <br />. <br />~ <br /> <br /> <br />, <br /> <br />-- ~., -. <br /> <br />-- <br /> <br />, <br /> <br />----.------;- <br /> <br />- <br /> <br />"- <br /> <br />* \- <br /> <br />tQ.-. <br /> <br />.. <br /> <br />, -'0; ,........ l ..l. <br /> <br />~ <br /> <br />__ .1. J..--', <br />~. \ -!r---l <br /> <br />'~-'-- ..... <br /> <br />--..4-_.:__ <br /> <br />---\..-...:o.---l. _I--... <br /> <br />*l-!llO'.P lIlUO 1200UlC 12!;(lf2003 ~c.JT <br /> <br />'-'-to :19,'2 ......... -'08.52 <br /> <br />Figure 2A Upper-air sounding (taken by a wealher balloon) al Grand Junction. <br />CO at 0500 :\IST on the morning of December 30.2003. The red solid line represents <br />temperature. and the green solid line is the dewpoint. Blue lines arc pressure levels in <br />millibars (horizontal) and temperature in degrees C (diagonal). Red and green dotted <br />lines represent nonnal temperature lapse rales (i.e.. change with height). Wind barbs on <br />the right sho\'-" wind speed and direction al various levels. This particular sounding <br />shows a temperature of about -10 degrees C at the 700-mb le\'el. which is a good <br />temperature for cloud seeding, Howe\'er. the lower atmosphere is rather stable in this <br />sounding. making cloud seeding practical only at select locations. <br /> <br />9 <br />