Multiscale Dynamics of the February 11-12, 2010, Deep South US Snowstorm Event
Joint Authors
Taylor, Stephany M.
Kaplan, Michael L.
Lin, Yuh-Lang
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-26, 26 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-10-24
Country of Publication
Egypt
No. of Pages
26
Main Subjects
Abstract EN
This study investigates the synoptic/mesoscale dynamics responsible for an unusually heavy southern US snowstorm that occurred on February 11-12, 2010, using reanalysis, observations, and numerical simulations.
This record breaking snowfall event represents an example of multiple upper level and low-level jets (LLJs) and their accompanying baroclinic zones.
The analysis reveals the following synoptic scale processes as significant contributors: (1) upper level jet splitting and merging, (2) advection of cold arctic air at low levels by a large anticyclone, and (3) an incoming upper level shortwave trough.
In addition to the synoptic scale processes, the following mesoscale features played a major role in this snowstorm event: coexisting potential (convective) instability and conditional symmetric instability, terrain blocking, and a double LLJ development process.
Sensitivity experiments including (1) limiting the orographic effects of elevated plateau in Texas and the Sierra Madre Mountains in Mexico by reducing the terrain height to 225 meters, (2) the microphysics/latent heating effects, and (3) surface fluxes on the development and intensity of the snowstorm were also conducted by turning these options off in the numerical model.
Of all three experiments, the surface flux experiment displays the least amount of influence on the developing frozen precipitation bands.
American Psychological Association (APA)
Taylor, Stephany M.& Kaplan, Michael L.& Lin, Yuh-Lang. 2017. Multiscale Dynamics of the February 11-12, 2010, Deep South US Snowstorm Event. Advances in Meteorology،Vol. 2017, no. 2017, pp.1-26.
https://search.emarefa.net/detail/BIM-1122805
Modern Language Association (MLA)
Taylor, Stephany M.…[et al.]. Multiscale Dynamics of the February 11-12, 2010, Deep South US Snowstorm Event. Advances in Meteorology No. 2017 (2017), pp.1-26.
https://search.emarefa.net/detail/BIM-1122805
American Medical Association (AMA)
Taylor, Stephany M.& Kaplan, Michael L.& Lin, Yuh-Lang. Multiscale Dynamics of the February 11-12, 2010, Deep South US Snowstorm Event. Advances in Meteorology. 2017. Vol. 2017, no. 2017, pp.1-26.
https://search.emarefa.net/detail/BIM-1122805
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1122805