Evolution of vertical drafts and cloud-to-ground lightning within the convective region of a mesoscale convective complex /
active convection. The relationship of cloud-to-ground (CG)
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| Format: | Thesis eBook |
| Language: | English |
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[Place of publication not identified] :
[publisher not identified] ;
1995.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | active convection. The relationship of cloud-to-ground (CG) analysis times which reached the surface near locations of and reflectivity at all levels. CG lightning also occurred and upper-levels but beneath smaller than average beneath greater than average reflectivity gradients at mid comparable to those from a squall line but became much evolution. An analysis of the vertical profiles of the expense of stronger vertical motions. Typically the non- fields for CG lightning. CG lightning occurred beneath flash rate. A similar delay was found on the convective flow revealed a descending rear-to-front inflow at later greater than average vertical velocities at mid-to-upper intense updraft cores while cross-sections of storm relative lag between the peak convective intensity and the peak CG levels and greater than average vertical velocity gradients lightning suggested a preferred vertical structure of these lightning to the kinematic structure of the MCC was also mesoscale convective complex (MCC) was examined over a 100 minute period during the storm's mature stage and compared to Operational and Research Meteorology - Central Phase) percentage of weak updrafts and downdrafts grew at the PRE-STORM (Preliminary Regional Experiment for Stormscale profiles from twenty dual-Doppler analyses indicated reflectivity gradients at low-levels due to its avoidance of scale for some convective cells, however, other apparently sections of both vertical velocity and reflectivity confirmed significant differences in convective intensity both similar cells had little CG lightning throughout their spatially and temporally. The peak magnitudes of the mid-to- squall MCC had a much larger percentage of strong downdrafts studied. For mesoscale regions there was a 10-20 minute time than did the squall line. Horizontal and vertical cross- that of a squall line. The area-averaged vertical velocity that the MCC was evolving toward a state with fewer and less The evolution of the area-averaged vertical velocity within the highest reflectivity gradient regions. the objectively defined convective region of the 4 June 1985 upper level area-averaged vertical velocity were initially upper levels was consistent with weakening convection as the vertical velocity, reflectivity and their gradients above CG weaker. The distribution of vertical velocities at mid-to- |
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| Item Description: | "Major subject: Meteorology". Vita. |
| Physical Description: | xiv, 170 leaves : illustrations, maps ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references. |