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Author Parker, Matthew D. ♦ Richard ♦ Johnson, H.
Source CiteSeerX
Content type Text
File Format PDF
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword American Meteorological Society Organizational Mode ♦ Midlatitude Mesoscale Convective System ♦ Convective Line ♦ Linear Mc Organization ♦ Mean Middle ♦ Linear Mc Class ♦ New Taxonomy ♦ Upper-tropospheric Storm-relative Wind ♦ P Archetype ♦ Synoptic-scale Meteorology Accom-panying Linear Mc ♦ Profiler Data Reveal ♦ Radar-observed Characteristic ♦ Little Attention ♦ Linear Mesoscale Convective System ♦ Case Study Example ♦ General Overview ♦ Mc Mode ♦ Upper Air Data ♦ Common Mode ♦ Mesoscale Convective Organization ♦ Linear Mc ♦ Studied Population ♦ Stratiform Precipitation ♦ Stratiform Precipitation Arrangement ♦ Dominant Mode ♦ T Archetype ♦ P Class ♦ Different Environment ♦ Previous Investigator ♦ Operational Surface ♦ 2-km National Composite Reflectivity Data ♦ Central United State
Abstract This paper discusses common modes of mesoscale convective organization. Using 2-km national composite reflectivity data, the authors investigated linear mesoscale convective systems (MCSs) that occurred in the central United States during May 1996 and May 1997. Based upon the radar-observed characteristics of 88 linear MCSs, the authors propose a new taxonomy comprising convective lines with trailing (TS), leading (LS), and parallel (PS) stratiform precipitation. While the TS archetype was found to be the dominant mode of linear MCS organization, the LS and PS archetypes composed nearly 40 % of the studied population. In this paper, the authors document the characteristics of each linear MCS class and use operational surface and upper air data to describe their different environments. In particular, wind profiler data reveal that the stratiform precipitation arrangement associated with each class was roughly consistent with the advection of hydrometeors implied by the mean middle- and upper-tropospheric storm-relative winds, which were significantly different among the three MCS modes. Case study examples are presented for both the LS and PS classes, which have received relatively little attention to this point. As well, the authors give a general overview of the synoptic-scale meteorology accom-panying linear MCSs in this study, which was generally similar to that observed by previous investigators. 1.
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study
Learning Resource Type Article
Publisher Date 1999-01-01