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<br />period (Nov. - Dec. 1983 and Jan. - Mar. 1985). Supercooled <br />liquid water was detected during alD~ost 30 percent of all <br />hours. Many episodes were of short duration (median-3 h), <br />but 80 percent of all hours with SLW were associated with <br />episodes of 5 h duration or more. <br /> <br />Some 57 percent of hours with SLW had mean values ~ 0.1 rom <br />and only 10 percent of all hours had> 0.4 rom. Most of the <br />SLW flux was consequently associated with periods of limited <br />SLW, generally less than 0.4 rom. The SLW flux during January <br />- March, 1985, if all were converted to uniform snowfall <br />within 10 km of the measurement site, would yield about an <br />additional 125 rom of precipitation. Some 275 rom of natural <br />precipitation actually fell nearby during the same period. <br /> <br />When all hours with detectable SLW and detectable precipita- <br /> <br /> <br />tion were considered, a weak positi~le relation was found. <br /> <br /> <br />There was no evidence that SLW was greatest when precipita- <br /> <br />tion was least. <br /> <br />Windflow Associated with SLW <br /> <br />The prevailing wind flow over the Grand Mesa is from the <br /> <br /> <br />southwest and west, as measured at the 700 mb level by rawin- <br /> <br />sondes released from Grand Junction, 44 km west of the Mesa. <br /> <br />The 700 mb wind is seldom from the northeast or southeast. <br />Supercooled liquid water (SLW) was detected by microwave <br />radiometric techniques primarily when winds were from the <br /> <br />23 <br />