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<br />JULY 1980 <br /> <br />NOTES AND CORRESPONDENCE <br /> <br />1059 <br /> <br /> <br /> <br />FIG, 3, (a) Visible satellite imagery from GOES-EAST (1.8 km resolution) taken at 1930 GMT 30 June 1977. Note the clear skies over <br />GLD, (b) As in Fig, 3a except at 2130 GMT 30 June 1977, (c) Visible satellite imagery from GOES-EAST (0,9 km resolution) taken at <br />2030 GMT 24 August 1977, Note the thin line of developing cumulus congestus and small cumulonimbus clouds in northeast Colorado, <br />(d) As in Fig, 3c except at 2330 GMT 24 August 1977, Note the rapid development of the line of cumulonimbus clouds in northeast <br />Colorado, <br /> <br />activity into these two categories. The results of the <br />numerical experiments were tabulated to show the <br />characteristic changes in convective potential index <br />and typical environmental responses predicted by <br />the model. Statistical tests were performed to de- <br />termine the significance of results using the stu- <br />dent's t test (Nie et al., 1975). <br /> <br />4. Results <br /> <br />Results f~om the modeling experiments are pre- <br />sented in three sections which discuss: (a) two case <br />study examples of model simulations, (b) the modeled <br /> <br />,~, <br />~.llIli... <br /> <br />1 ,. <br /> <br />effect of mesoscale lifting on PBE and cloud growth, <br />and (c) the model's ability to discriminate between <br />observed mesoscale triggered convection and <br />isolated convection. <br /> <br />a. Two case-study examples <br /> <br />Two cases which show the effects of lifting on <br />stable layers are presented in this section, one for a <br />clear day and one for a day with organized convec- <br />tive development. These two examples show that <br />the sequence of model simulated development and <br />the magnitude of the CPI provide useful inform a- <br />