The June 2013 Alberta catastrophic flooding event - part 2: fine-scale precipitation and associated features

Kochtubajda, B.; Stewart, R. E.; Boodoo, S.; Thériault, J. M.; Li, Y.; Liu, A.; Mooney, C.; Goodson, R. et Szeto, K. (2016). « The June 2013 Alberta catastrophic flooding event - part 2: fine-scale precipitation and associated features ». Hydrological Processes.

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Résumé

Data obtained from a variety of sources including the Canadian Lightning Detection Network, weather radars, weather stations and operational numerical weather model analyses were used to address the evolution of precipitation during the June 2013 southern Alberta flood. The event was linked to a mid-level closed low pressure system to the west of the region and a surface low pressure region initially to its south. This configuration brought warm, moist unstable air into the region that led to dramatic, organized convection with an abundance of lightning and some hail. Such conditions occurred in the southern parts of the region whereas the northern parts were devoid of lightning. Initially, precipitation rates were high (extreme 15-min rainfall rates up to 102 mm h−1 were measured) but decreased to lower values as the precipitation shifted to long-lived stratiform conditions. Both the convective and stratiform precipitation components were affected by the topography. Similar flooding events, such as June 2002, have occurred over this region although the 2002 event was colder and precipitation was not associated with substantial convection over southwest Alberta.

Type:	Article de revue scientifique
Informations complémentaires:	This is the peer reviewed version of the following article: Kochtubajda, B., Stewart, R.E., Boodoo, S., Thériault, J.M., Li, Y., Liu, A., Mooney, C., Goodson, R. et Szeto, K. (2016). The June 2013 Alberta catastrophic flooding event - part 2: Fine-scale precipitation and associated features. Hydrological Processes, which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1002/hyp.10855/abstract. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
Mots-clés ou Sujets:	Alberta flooding, orographic precipitation, convection, upslope flow, radar, lightning
Unité d'appartenance:	Faculté des sciences > Département des sciences de la Terre et de l'atmosphère
Déposé par:	Julie Mireille Thériault
Date de dépôt:	17 nov. 2016 14:07
Dernière modification:	01 déc. 2017 00:10
Adresse URL :	http://archipel.uqam.ca/id/eprint/9081

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