Accession Number : ADA268011


Title :   Opposing Mesoscale Flows in a Broken Midlatitude Squall Line


Descriptive Note : Master's thesis,


Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH


Personal Author(s) : Miner, Barbara D


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a268011.pdf


Report Date : Jan 1993


Pagination or Media Count : 128


Abstract : During the period 14-15 June 1985 a broken line of convection with one primary gap (echo-free) region developed along a cold front passing through the Oklahoma-Kansas Preliminary Regional Experiment for STORM-Central (OK PRE-STORM) domain. Radar and satellite data are presented to provide an overview of the life cycle of the line. Observations from the OK PRE-STORM mesonetwork and upper air soundings are used to document the occurrence of the gap and an associated surface mesolow. The convective line initially developed as two mesoscale convective systems (MCSs), one in northeast Kansas, the other in the Texas panhandle, along a weak cold front. As the two MCSs matured, convection developed between the two similar to the broken-line squall line formation described by Bluestein and Jain (1985). Despite strong low-level convergence and strong moisture convergence, an echo-free region remained between the two MCSs throughout the life cycle of the line.


Descriptors :   *CONVECTION , *COLD FRONTS , OBSERVATION , WIND , METEOROLOGICAL SATELLITES , SURFACES , ARTIFICIAL SATELLITES , LOW LEVEL , LIFE CYCLES , TEXAS , KANSAS , ATMOSPHERIC SOUNDING , OKLAHOMA , MOISTURE , CONVERGENCE , STORMS , ECHOES , CYCLES , RADAR , THESES


Subject Categories : Meteorology


Distribution Statement : APPROVED FOR PUBLIC RELEASE