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Titolo:
Organizational modes of midlatitude mesoscale convective systems
Autore:
Parker, MD; Johnson, RH;
Indirizzi:
Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA ColoradoState Univ Ft Collins CO USA 80523 Sci, Ft Collins, CO 80523 USA
Titolo Testata:
MONTHLY WEATHER REVIEW
fascicolo: 10, volume: 128, anno: 2000,
pagine: 3413 - 3436
SICI:
0027-0644(200010)128:10<3413:OMOMMC>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
TRAILING STRATIFORM REGIONS; LOW-SHEAR ENVIRONMENT; SQUALL-LINE STRUCTURE; UNITED-STATES; GRAVITY-WAVES; PRECIPITATION; EVOLUTION; MOMENTUM; COMPLEXES; OKLAHOMA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
77
Recensione:
Indirizzi per estratti:
Indirizzo: Parker, MD Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA Colorado State Univ Ft Collins CO USA 80523 lins, CO 80523 USA
Citazione:
M.D. Parker e R.H. Johnson, "Organizational modes of midlatitude mesoscale convective systems", M WEATH REV, 128(10), 2000, pp. 3413-3436

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 UnitedStates 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 modeof 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 impliedby 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 accompanying linear MCSs in this study,which was generally similar to that observed by previous investigators.

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Documento generato il 04/12/20 alle ore 21:50:03